Sam’s Network Simulation Cradle Blog

27 Mar 2008

The end of an era

Filed under: Network Simulation Cradle — sammydre @ 5:54 am

A nice excerpt from a form handed in today:

thesis_submission_excerpt.JPG

It’s done — “there’s no going back now.” I thought when I finally handed the thesis in I’d have a lot to say here. However, I don’t.

19 Mar 2008

The NSC development repository

Filed under: Network Simulation Cradle — sammydre @ 10:06 pm

… Should really be opened up.

This post is just a TODO to remind me to look into this.

Final bits of the thesis…

Filed under: Network Simulation Cradle — sammydre @ 9:56 pm

TODO:

  • read through thesis, check grammar, etc. (done)
  • incorporate fixes from reading above (done)
  • check margins (make into PDF, make sure paper is A4, measure margins to make sure they are right, possibly look for an A4 printer here (might be hard, everything is letter)) (done)
  • check Waikato dissertation style guide for any other things we must conform to (done, and fixed title page)
  • look into ns-2 graph in chapter 2, look to fix (done)
  • check table/figure/listing titles/captions: top or bottom? refer to Waikato dissertation style guide to see what is required (done, no explicit requirements, so wont bother changing unless its requested later)
  • consider changing last paragraph of the abstract (done, think it’s ok)
  • spell check (ensure no local word file first) (done)
  • “check for widows” (done)
  • find which pages need to be printed in colour (done)

15 Mar 2008

Fun with subversion repository history: a visualisation

Filed under: General — sammydre @ 8:34 pm

Some time ago I hacked up a little script to view my subversion repository version over time. I lost the initial script but I’ve recreated it today. Thought it was interesting to look at as the history dates back to 2003. Creating this is very easy with the help of svn log.

Bash:
  1. svn log svn+ssh://host/repository/ | grep -E "^r[0-9]+" | awk ‘{ print $5, $1 }’ | sed ’s/r//’ > repo.txt

Produces a file like:

2008-03-12 1681
2008-03-12 1680
2008-03-11 1679
... etc ...

Looks good for graphing with a program like gnuplot:

set xdata time
# The format of time found in the file
set timefmt "%Y-%m-%d"

set term png
set output "repository.png"

set xlabel "Date"
set ylabel "Repository revision"
set title "Repository version over time"

# The time format actually shown on the x-axis
set format x "%Y"

# It's tricky to get the tics right in time mode, as you have to specify increments in seconds.
# I find it easier to just specify what dates I want shown
set xtics ("2003-1-1", "2004-1-1", "2005-1-1", "2006-1-1", "2007-1-1", "2008-1-1")
set nokey

plot "repository.txt" using 1:2 with lines

And this produces the following result:

Sam’s research repository version over time

The hickup in the graph for me is due to an import with cvs2svn. Looks like the dates don’t quite increase as one would expect (this can be seen in the svn log output, too). In general the approach appears to work well enough, though.

Upgrading WordPress with SVN

Filed under: General — sammydre @ 5:51 am

One of the recommended ways to upgrade WordPress these days is with SVN. This is a convinient way of updating that is a lot quicker than the previous method. One of the problems with WordPress I’ve found over 4 years of running the software is that it has required many updates — I’ve almost never wanted any additional features, but there always seem to be new security holes. So a quicker way of updating is nice.

One of the things about updating with SVN, which does not appear to be discussed, is that it leaves a plethora of “.svn” directories on your webserver. Stored in these directories is the subversion source control info and backups of the working copy. By default, if you update with SVN, any user could browse the exact code that is running your blog. This sounds like a bad idea to me. While Wordpress is already open source, I don’t see any need to allow potential users/crackers/hackers/whatnot to browse through the exact code I’m running here. .htaccess to the rescue.

You could configure your web servers config to deny access to any directory with “.svn” in it.

If you are only a user on a webserver with .htaccess, it gets a bit more tricky. You could put a .htaccess in each .svn directory. Easy with a script, but tough to maintain. Or you could use mod_rewrite to make a simple rule that denies access to any pages with /.svn in the path:

RewriteEngine on
RewriteRule ^(.*\.svn.*)$ $1 [forbidden]

13 Mar 2008

URLs in Latex and hyperref

Filed under: Network Simulation Cradle — sammydre @ 9:48 pm

The url package in Latex does a good job of formatting URLs and breaking them over lines when need be. Unfortunately, when you use hyperref, the package which makes PDF links and stuff work, the breaking over line functionality… breaks.

The solution of this problem is described in the FAQ. Basically, you need to get the breakurl package, a link for which is in the FAQ entry.

12 Mar 2008

List spacing and Latex

Filed under: Network Simulation Cradle — sammydre @ 7:12 pm

I was finding my list environments (enumerate, itemize, etc.) in Latex were taking up a lot of space. While space isn’t a huge concern in a dissertation, they tended to look a bit too… spaced out. I did a bit of research on this and mostly remedied the situation. Turns out that by default the list environments use extra line spacing, so if you’ve already got 1.5 line spacing to begin with, they end up being huge.

Some people advocate creating your own new environment commands where you manually set some of the spacing lengths down.

Another blog provides some very good information on reducing whitespace. This helped a bit for me, but it wasn’t quite what I was looking for.

I found out about the package enumitem. This is quite cool, making it very easy to set the line spacing to something reasonable for all of your lists. I did something like:

LaTeX:
  1. % enumitem setup
  2. \setlist{noitemsep,topsep=0pt}
  3. \setitemize{noitemsep,topsep=0pt}
  4. \setenumerate{noitemsep,topsep=0pt}

It’s still not perfect. I still end up with lots of white space between a paragraph and a list. But its much better than it was.

Performant: real word or not?

Filed under: Network Simulation Cradle — sammydre @ 6:22 pm

I got some feedback from my PhD supervisor recently and one of the comments was as follows:

Real word?

I had been using “performant” to mean something along the lines of “fast enough”. But is it really a word? I wasn’t actually sure. Turns out a few others have had the same problem. Looks like Jeff Boulter bet me to this by about 4 years. The comments on the blog entry there provide a bit more background to this issue.

I just changed the way I wrote my sentence in the end.

Maybe a proliferation of blog entries on this word will aid its journey to the dictionary!

11 Jan 2008

NSC 0.3.0 released

Filed under: Network Simulation Cradle — sammydre @ 6:46 pm

Released a new version of NSC after over a year. It has support for Linux 2.6.18 amongst other things. As usual, it can be found at: http://research.wand.net.nz/software/nsc.php

28 May 2007

For lack of a better title: “more PhD progress”

Filed under: Network Simulation Cradle — sammydre @ 5:02 pm

PhD seems to be getting a bit bigger. Went past the 40,000 word mark. Well, the word count is approximate, so maybe I haven’t. Or maybe I already have. But it’s probably about right.

sam@hesiod:~/900/thesis$ make wordcount
Approximate word count: 41095

(40,000 words doesn’t seem like much for the size of the document. I’ll probably remove a few thousand before its finished. Somehow its almost 200 pages worth, though. Not sure how that works out…)

The literature review chapter has been getting a major cleanup this weekend and will hopefully soon be a lot more cohesive than it was. I’m much happier with the structure now, though the new structure isn’t finished yet! I have 3 more subsections to write before all the content is back.

Then I just need to read over it and add bits that make it flow better: discussion sections and bits that help transition from one section to another. I’m hoping this will be fairly obvious later on. It’s probably not too bad as it is, actually. It’s already feeling a lot better than it was.

Hopefully I can finish this one over the next week. It has turned out to be a lot more work than I was expecting. Still, it’s all progress and when I’m done this time it should be pretty decent (though I always wish I had more time to really think these things through and discuss them with others. Oh well).

17 May 2007

Next steps…

Filed under: Network Simulation Cradle — sammydre @ 7:37 pm

“Literature review” chapter needs a bit of love and care.

Need to make it a bit stronger, so it really sets the scene for the thesis to come. Reader should know a bit about the problem space, the problem to be solved, other approaches, and why we need a new approach by the end of this chapter (the intro chapter will have a bit of this too).

I think the main change will be a reordering of the sections in the chapter and perhaps making bits of it a bit stronger. Can probably drop the background chapter, too. More on this later perhaps…

13 May 2007

Performance chapter

Filed under: Network Simulation Cradle — sammydre @ 8:36 pm

Performance chapter is done — 2nd draft is off now. That’s good progress, means the core 4 chapters of the dissertation are just about ready for further dissemination.

Need to sort of the literature review next. Once that’s done, its just the beginning and end that need tidying up: intro/background and conclusions need some work still, but probably not toooo much.

So, further progress. It is slow, but its steadily forming into something much more like a PhD thesis. Getting closer with every passing… month.

23 Apr 2007

Silly Perl thoughts…

Filed under: General — sammydre @ 8:44 pm

A simple script to show a table of contents like view of a latex file. I could make a couple of assumptions about the input based on my setup. My first attempt which is probably somewhere on my blog looked like this:

Perl:
  1. if($#ARGV > 0) { $in_file_name = shift; }
  2. else { $in_file_name = "thesis.tex"; }
  3.  
  4. sub read_file
  5. {        
  6.     my $file_name = shift;
  7.     local *IN;
  8.     open IN, "<$file_name";
  9.  
  10.     while(<IN>) {
  11.         if(/^\\chapter.?{(.+?)}/) {print "——————–\n$1\n";}
  12.         elsif(/^\\section.?{(.+?)}/) {print " . . $1\n";}
  13.         elsif(/^\\subsection.?{(.+?)}/) {print " . . . . $1\n";}
  14.         elsif(/^\\subsubsection.?{(.+?)}/) {print " . . . . . . $1\n";}
  15.         elsif(/^\\paragraph.?{(.+?)}/) {print " . . . . . . . . $1\n";}
  16.         elsif(/^\\input{(.+?)}/) {read_file($1);}
  17.     }
  18.  
  19.     close IN;
  20. }  
  21.  
  22. read_file($in_file_name);

A classic recursive solution using a function. I had a quick play today and produced this:

Perl:
  1. #!perl -n
  2.  
  3. /^\\chapter.?{(.+?)}/       and print "-" x20 . "\n$1\n" or
  4. /^\\section.?{(.+?)}/       and print " ." x2 . " $1\n" or
  5. /^\\subsection.?{(.+?)}/    and print " ." x4 . " $1\n" or
  6. /^\\subsubsection.?{(.+?)}/ and print " ." x6 . " $1\n" or
  7. /^\\paragraph.?{(.+?)}/     and print " ." x8 . " $1\n" or
  8. /^\\input{(.+?)}/           and system "perl list_sections2.pl $1";

Which is a lot more compact. It’s almost inefficient, but this doesn’t really matter for this problem (or at least the input I have).

Which one feels more Perl-y?

Or should I just give up on Perl and go back to my Pythonic ways?

Yet another wordpress upgrade…

Filed under: Network Simulation Cradle — sammydre @ 8:37 pm

Seem to have to do these semi-regularly. At least you know when you need to update from the admin page. And so far the updates have been fairly seamless.

On another note, it’s progress report time. Started work on a new progress report this morning in the train. Looks decent already but needs a bit more work yet. Always interesting to look back and see what you’ve done over the past 6+ months.

I’ve regenerated a lot of results, learned a bit about statistical analysis of these results, made a host of new graphs and such. Simulations and other experiments are included here. I’ve finished off the writing of the first draft of my dissertation and Tony has read over the whole thing. I’ve incorporated a lot of his comments, but there are still more to go. I’ve presented one paper, had another accepted and submitted another (the latter two are mentioned in the previous post). I’ve completely failed to meet my earlier deadlines due to working too much.

Progress and progress and I am making some. Doing a report is always a bit annoying as its time spent not working on the PhD itself, but I should have this finished before too long; I don’t believe anybody will care if its not 100% polished.

4 Apr 2007

Results…

Filed under: Network Simulation Cradle — sammydre @ 8:35 pm

Running emulation tests again back in NZ. They have been running for around 24 hours but look like they’ll need a further couple of days before they’ll show me the data I want. So far the results look good but the tests haven’t really got down to the bit I’m interested in yet (Linux 2.6 performance, only have OpenBSD results so far).

Simulation results look fine. Simulating the scenario was much quicker! (and didn’t require a network of 6 machines and so on…. Hooray for simulation. Well, if its correct. When the emulations finish I should be able to say whether it is).

Submitted a paper to a conference and got news of acceptance from a journal. Good times.

26 Mar 2007

On my laptop

Filed under: Network Simulation Cradle — sammydre @ 9:05 pm

I experience the annoying hibernate bug described here

Hopefully that will be fixed before long, I was finding it would happen quite often when resuming my laptop when sitting on the train to/from work…

10 Mar 2007

em-6 testing

Filed under: Network Simulation Cradle — sammydre @ 5:44 pm

I’ve tried using tcpperf on the emulation machines as well, to no real avail. Still can’t get close to the 1.6Mb/s that I get in simulation (1.3Mb/s is the closest I can do).

So changing the application and app. write size and such doesn’t seem to make much of a difference. What on earth is simulation doing?

  • Simulation seems to have the same queue size.
  • Simulation seems to have the same RTT.
  • Simulation seems to have the same bandwidths for the links.
  • Simulations are of the same length.

As far as I’m aware the TCP stack should be exactly the same, too. Huh.

sim-9 and em-6 stuff

Filed under: Network Simulation Cradle — sammydre @ 5:03 pm

Emulation machine configuration:

Routers:

machine8:~$ ipfw show
00100 503850 754304064 pipe 1 ip from 10.0.10.0/24 to 10.0.12.0/24 out
00200 352154 22892296 pipe 2 ip from 10.0.12.0/24 to 10.0.10.0/24 out
65535 1066462199 907053087644 allow ip from any to any
machine8:~$ ipfw pipe 1 show
00001: 2.000 Mbit/s 100 ms 10 sl. 1 queues (1 buckets) droptail
mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
0 tcp 10.0.10.11/21060 10.0.12.15/5001 4199635 6284426013 0 0 195869
machine8:~$ ipfw pipe 2 show
00002: 2.000 Mbit/s 100 ms 10 sl. 1 queues (1 buckets) droptail
mask: 0x00 0x00000000/0x0000 -> 0x00000000/0x0000
BKT Prot ___Source IP/port____ ____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp
0 tcp 10.0.12.15/5001 10.0.10.11/21060 3091515 178805584 0 0 105670
machine15:~# iperf --version
iperf version 1.6.5 (13 Jan 2003) pthreads
--- 10.0.12.15 ping statistics ---
2824 packets transmitted, 2772 packets received, 1% packet loss
round-trip min/avg/max = 201.4/202.2/205.0 ms
machine9:~$ ipfw show
65535 1073522937 912942416683 allow ip from any to any

End hosts:

machine11:~# uname -a
Linux machine11 2.6.10 #2 Wed Jan 12 13:36:08 NZDT 2005 i686 unknown
sunrpc.tcp_slot_table_entries = 16
sunrpc.udp_slot_table_entries = 16
sunrpc.nlm_debug = 0
sunrpc.nfsd_debug = 0
sunrpc.nfs_debug = 0
sunrpc.rpc_debug = 0
dev.cdrom.check_media = 0
dev.cdrom.lock = 1
dev.cdrom.debug = 0
dev.cdrom.autoeject = 0
dev.cdrom.autoclose = 1
dev.cdrom.info = CD-ROM information, Id: cdrom.c 3.20 2003/12/17
dev.cdrom.info =
dev.cdrom.info = drive name: hdc
dev.cdrom.info = drive speed: 48
dev.cdrom.info = drive # of slots: 1
dev.cdrom.info = Can close tray: 1
dev.cdrom.info = Can open tray: 1
dev.cdrom.info = Can lock tray: 1
dev.cdrom.info = Can change speed: 1
dev.cdrom.info = Can select disk: 0
dev.cdrom.info = Can read multisession: 1
dev.cdrom.info = Can read MCN: 1
dev.cdrom.info = Reports media changed: 1
dev.cdrom.info = Can play audio: 1
dev.cdrom.info = Can write CD-R: 0
dev.cdrom.info = Can write CD-RW: 0
dev.cdrom.info = Can read DVD: 0
dev.cdrom.info = Can write DVD-R: 0
dev.cdrom.info = Can write DVD-RAM: 0
dev.cdrom.info = Can read MRW: 1
dev.cdrom.info = Can write MRW: 1
dev.cdrom.info = Can write RAM: 1
dev.cdrom.info =
dev.cdrom.info =
dev.hpet.max-user-freq = 64
dev.rtc.max-user-freq = 64
dev.scsi.logging_level = 0
fs.mqueue.msgsize_max = 8192
fs.mqueue.msg_max = 10
fs.mqueue.queues_max = 256
fs.nfs.nlm_tcpport = 0
fs.nfs.nlm_udpport = 0
fs.nfs.nlm_timeout = 10
fs.nfs.nlm_grace_period = 0
fs.aio-max-nr = 65536
fs.aio-nr = 0
fs.lease-break-time = 45
fs.dir-notify-enable = 1
fs.leases-enable = 1
fs.overflowgid = 65534
fs.overflowuid = 65534
fs.dentry-state = 1761 725 45 0 0 0
fs.file-max = 11970
fs.file-nr = 200 0 11970
fs.inode-state = 1666 23 0 0 0 0 0
fs.inode-nr = 1666 23
net.ipv6.conf.eth1.max_addresses = 16
net.ipv6.conf.eth1.force_mld_version = 0
net.ipv6.conf.eth1.router_solicitation_delay = 1
net.ipv6.conf.eth1.router_solicitation_interval = 4
net.ipv6.conf.eth1.router_solicitations = 3
net.ipv6.conf.eth1.dad_transmits = 1
net.ipv6.conf.eth1.autoconf = 1
net.ipv6.conf.eth1.accept_redirects = 1
net.ipv6.conf.eth1.accept_ra = 1
net.ipv6.conf.eth1.mtu = 1500
net.ipv6.conf.eth1.hop_limit = 64
net.ipv6.conf.eth1.forwarding = 0
net.ipv6.conf.eth0.max_addresses = 16
net.ipv6.conf.eth0.force_mld_version = 0
net.ipv6.conf.eth0.router_solicitation_delay = 1
net.ipv6.conf.eth0.router_solicitation_interval = 4
net.ipv6.conf.eth0.router_solicitations = 3
net.ipv6.conf.eth0.dad_transmits = 1
net.ipv6.conf.eth0.autoconf = 1
net.ipv6.conf.eth0.accept_redirects = 1
net.ipv6.conf.eth0.accept_ra = 1
net.ipv6.conf.eth0.mtu = 1500
net.ipv6.conf.eth0.hop_limit = 64
net.ipv6.conf.eth0.forwarding = 0
net.ipv6.conf.lo.max_addresses = 16
net.ipv6.conf.lo.force_mld_version = 0
net.ipv6.conf.lo.router_solicitation_delay = 1
net.ipv6.conf.lo.router_solicitation_interval = 4
net.ipv6.conf.lo.router_solicitations = 3
net.ipv6.conf.lo.dad_transmits = 1
net.ipv6.conf.lo.autoconf = 1
net.ipv6.conf.lo.accept_redirects = 1
net.ipv6.conf.lo.accept_ra = 1
net.ipv6.conf.lo.mtu = 16436
net.ipv6.conf.lo.hop_limit = 64
net.ipv6.conf.lo.forwarding = 0
net.ipv6.conf.default.max_addresses = 16
net.ipv6.conf.default.force_mld_version = 0
net.ipv6.conf.default.router_solicitation_delay = 1
net.ipv6.conf.default.router_solicitation_interval = 4
net.ipv6.conf.default.router_solicitations = 3
net.ipv6.conf.default.dad_transmits = 1
net.ipv6.conf.default.autoconf = 1
net.ipv6.conf.default.accept_redirects = 1
net.ipv6.conf.default.accept_ra = 1
net.ipv6.conf.default.mtu = 1280
net.ipv6.conf.default.hop_limit = 64
net.ipv6.conf.default.forwarding = 0
net.ipv6.conf.all.max_addresses = 16
net.ipv6.conf.all.force_mld_version = 0
net.ipv6.conf.all.router_solicitation_delay = 1
net.ipv6.conf.all.router_solicitation_interval = 4
net.ipv6.conf.all.router_solicitations = 3
net.ipv6.conf.all.dad_transmits = 1
net.ipv6.conf.all.autoconf = 1
net.ipv6.conf.all.accept_redirects = 1
net.ipv6.conf.all.accept_ra = 1
net.ipv6.conf.all.mtu = 1280
net.ipv6.conf.all.hop_limit = 64
net.ipv6.conf.all.forwarding = 0
net.ipv6.neigh.eth1.locktime = 0
net.ipv6.neigh.eth1.proxy_delay = 79
net.ipv6.neigh.eth1.anycast_delay = 99
net.ipv6.neigh.eth1.proxy_qlen = 64
net.ipv6.neigh.eth1.unres_qlen = 3
net.ipv6.neigh.eth1.gc_stale_time = 60
net.ipv6.neigh.eth1.delay_first_probe_time = 5
net.ipv6.neigh.eth1.base_reachable_time = 30
net.ipv6.neigh.eth1.retrans_time = 1000
net.ipv6.neigh.eth1.app_solicit = 0
net.ipv6.neigh.eth1.ucast_solicit = 3
net.ipv6.neigh.eth1.mcast_solicit = 3
net.ipv6.neigh.eth0.locktime = 0
net.ipv6.neigh.eth0.proxy_delay = 79
net.ipv6.neigh.eth0.anycast_delay = 99
net.ipv6.neigh.eth0.proxy_qlen = 64
net.ipv6.neigh.eth0.unres_qlen = 3
net.ipv6.neigh.eth0.gc_stale_time = 60
net.ipv6.neigh.eth0.delay_first_probe_time = 5
net.ipv6.neigh.eth0.base_reachable_time = 30
net.ipv6.neigh.eth0.retrans_time = 1000
net.ipv6.neigh.eth0.app_solicit = 0
net.ipv6.neigh.eth0.ucast_solicit = 3
net.ipv6.neigh.eth0.mcast_solicit = 3
net.ipv6.neigh.lo.locktime = 0
net.ipv6.neigh.lo.proxy_delay = 79
net.ipv6.neigh.lo.anycast_delay = 99
net.ipv6.neigh.lo.proxy_qlen = 64
net.ipv6.neigh.lo.unres_qlen = 3
net.ipv6.neigh.lo.gc_stale_time = 60
net.ipv6.neigh.lo.delay_first_probe_time = 5
net.ipv6.neigh.lo.base_reachable_time = 30
net.ipv6.neigh.lo.retrans_time = 1000
net.ipv6.neigh.lo.app_solicit = 0
net.ipv6.neigh.lo.ucast_solicit = 3
net.ipv6.neigh.lo.mcast_solicit = 3
net.ipv6.neigh.default.gc_thresh3 = 1024
net.ipv6.neigh.default.gc_thresh2 = 512
net.ipv6.neigh.default.gc_thresh1 = 128
net.ipv6.neigh.default.gc_interval = 30
net.ipv6.neigh.default.locktime = 0
net.ipv6.neigh.default.proxy_delay = 79
net.ipv6.neigh.default.anycast_delay = 99
net.ipv6.neigh.default.proxy_qlen = 64
net.ipv6.neigh.default.unres_qlen = 3
net.ipv6.neigh.default.gc_stale_time = 60
net.ipv6.neigh.default.delay_first_probe_time = 5
net.ipv6.neigh.default.base_reachable_time = 30
net.ipv6.neigh.default.retrans_time = 1000
net.ipv6.neigh.default.app_solicit = 0
net.ipv6.neigh.default.ucast_solicit = 3
net.ipv6.neigh.default.mcast_solicit = 3
net.ipv6.mld_max_msf = 10
net.ipv6.ip6frag_secret_interval = 600
net.ipv6.ip6frag_time = 60
net.ipv6.ip6frag_low_thresh = 196608
net.ipv6.ip6frag_high_thresh = 262144
net.ipv6.bindv6only = 0
net.ipv6.icmp.ratelimit = 1000
net.ipv6.route.min_adv_mss = 1
net.ipv6.route.mtu_expires = 600
net.ipv6.route.gc_elasticity = 0
net.ipv6.route.gc_interval = 30
net.ipv6.route.gc_timeout = 60
net.ipv6.route.gc_min_interval = 0
net.ipv6.route.max_size = 4096
net.ipv6.route.gc_thresh = 1024
net.unix.max_dgram_qlen = 10
net.ipv4.conf.eth1.force_igmp_version = 0
net.ipv4.conf.eth1.disable_policy = 0
net.ipv4.conf.eth1.disable_xfrm = 0
net.ipv4.conf.eth1.arp_ignore = 0
net.ipv4.conf.eth1.arp_announce = 0
net.ipv4.conf.eth1.arp_filter = 0
net.ipv4.conf.eth1.tag = 0
net.ipv4.conf.eth1.log_martians = 0
net.ipv4.conf.eth1.bootp_relay = 0
net.ipv4.conf.eth1.medium_id = 0
net.ipv4.conf.eth1.proxy_arp = 0
net.ipv4.conf.eth1.accept_source_route = 1
net.ipv4.conf.eth1.send_redirects = 1
net.ipv4.conf.eth1.rp_filter = 1
net.ipv4.conf.eth1.shared_media = 1
net.ipv4.conf.eth1.secure_redirects = 1
net.ipv4.conf.eth1.accept_redirects = 1
net.ipv4.conf.eth1.mc_forwarding = 0
net.ipv4.conf.eth1.forwarding = 0
net.ipv4.conf.eth0.force_igmp_version = 0
net.ipv4.conf.eth0.disable_policy = 0
net.ipv4.conf.eth0.disable_xfrm = 0
net.ipv4.conf.eth0.arp_ignore = 0
net.ipv4.conf.eth0.arp_announce = 0
net.ipv4.conf.eth0.arp_filter = 0
net.ipv4.conf.eth0.tag = 0
net.ipv4.conf.eth0.log_martians = 0
net.ipv4.conf.eth0.bootp_relay = 0
net.ipv4.conf.eth0.medium_id = 0
net.ipv4.conf.eth0.proxy_arp = 0
net.ipv4.conf.eth0.accept_source_route = 1
net.ipv4.conf.eth0.send_redirects = 1
net.ipv4.conf.eth0.rp_filter = 1
net.ipv4.conf.eth0.shared_media = 1
net.ipv4.conf.eth0.secure_redirects = 1
net.ipv4.conf.eth0.accept_redirects = 1
net.ipv4.conf.eth0.mc_forwarding = 0
net.ipv4.conf.eth0.forwarding = 0
net.ipv4.conf.lo.force_igmp_version = 0
net.ipv4.conf.lo.disable_policy = 1
net.ipv4.conf.lo.disable_xfrm = 1
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.conf.lo.arp_announce = 0
net.ipv4.conf.lo.arp_filter = 0
net.ipv4.conf.lo.tag = 0
net.ipv4.conf.lo.log_martians = 0
net.ipv4.conf.lo.bootp_relay = 0
net.ipv4.conf.lo.medium_id = 0
net.ipv4.conf.lo.proxy_arp = 0
net.ipv4.conf.lo.accept_source_route = 1
net.ipv4.conf.lo.send_redirects = 1
net.ipv4.conf.lo.rp_filter = 1
net.ipv4.conf.lo.shared_media = 1
net.ipv4.conf.lo.secure_redirects = 1
net.ipv4.conf.lo.accept_redirects = 1
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.lo.forwarding = 0
net.ipv4.conf.default.force_igmp_version = 0
net.ipv4.conf.default.disable_policy = 0
net.ipv4.conf.default.disable_xfrm = 0
net.ipv4.conf.default.arp_ignore = 0
net.ipv4.conf.default.arp_announce = 0
net.ipv4.conf.default.arp_filter = 0
net.ipv4.conf.default.tag = 0
net.ipv4.conf.default.log_martians = 0
net.ipv4.conf.default.bootp_relay = 0
net.ipv4.conf.default.medium_id = 0
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.default.accept_source_route = 1
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.shared_media = 1
net.ipv4.conf.default.secure_redirects = 1
net.ipv4.conf.default.accept_redirects = 1
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.all.force_igmp_version = 0
net.ipv4.conf.all.disable_policy = 0
net.ipv4.conf.all.disable_xfrm = 0
net.ipv4.conf.all.arp_ignore = 0
net.ipv4.conf.all.arp_announce = 0
net.ipv4.conf.all.arp_filter = 0
net.ipv4.conf.all.tag = 0
net.ipv4.conf.all.log_martians = 0
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.medium_id = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.send_redirects = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.all.shared_media = 1
net.ipv4.conf.all.secure_redirects = 1
net.ipv4.conf.all.accept_redirects = 1
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.forwarding = 0
net.ipv4.neigh.eth1.locktime = 99
net.ipv4.neigh.eth1.proxy_delay = 79
net.ipv4.neigh.eth1.anycast_delay = 99
net.ipv4.neigh.eth1.proxy_qlen = 64
net.ipv4.neigh.eth1.unres_qlen = 3
net.ipv4.neigh.eth1.gc_stale_time = 60
net.ipv4.neigh.eth1.delay_first_probe_time = 5
net.ipv4.neigh.eth1.base_reachable_time = 30
net.ipv4.neigh.eth1.retrans_time = 99
net.ipv4.neigh.eth1.app_solicit = 0
net.ipv4.neigh.eth1.ucast_solicit = 3
net.ipv4.neigh.eth1.mcast_solicit = 3
net.ipv4.neigh.eth0.locktime = 99
net.ipv4.neigh.eth0.proxy_delay = 79
net.ipv4.neigh.eth0.anycast_delay = 99
net.ipv4.neigh.eth0.proxy_qlen = 64
net.ipv4.neigh.eth0.unres_qlen = 3
net.ipv4.neigh.eth0.gc_stale_time = 60
net.ipv4.neigh.eth0.delay_first_probe_time = 5
net.ipv4.neigh.eth0.base_reachable_time = 30
net.ipv4.neigh.eth0.retrans_time = 99
net.ipv4.neigh.eth0.app_solicit = 0
net.ipv4.neigh.eth0.ucast_solicit = 3
net.ipv4.neigh.eth0.mcast_solicit = 3
net.ipv4.neigh.lo.locktime = 99
net.ipv4.neigh.lo.proxy_delay = 79
net.ipv4.neigh.lo.anycast_delay = 99
net.ipv4.neigh.lo.proxy_qlen = 64
net.ipv4.neigh.lo.unres_qlen = 3
net.ipv4.neigh.lo.gc_stale_time = 60
net.ipv4.neigh.lo.delay_first_probe_time = 5
net.ipv4.neigh.lo.base_reachable_time = 30
net.ipv4.neigh.lo.retrans_time = 99
net.ipv4.neigh.lo.app_solicit = 0
net.ipv4.neigh.lo.ucast_solicit = 3
net.ipv4.neigh.lo.mcast_solicit = 3
net.ipv4.neigh.default.gc_thresh3 = 1024
net.ipv4.neigh.default.gc_thresh2 = 512
net.ipv4.neigh.default.gc_thresh1 = 128
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.locktime = 99
net.ipv4.neigh.default.proxy_delay = 79
net.ipv4.neigh.default.anycast_delay = 99
net.ipv4.neigh.default.proxy_qlen = 64
net.ipv4.neigh.default.unres_qlen = 3
net.ipv4.neigh.default.gc_stale_time = 60
net.ipv4.neigh.default.delay_first_probe_time = 5
net.ipv4.neigh.default.base_reachable_time = 30
net.ipv4.neigh.default.retrans_time = 99
net.ipv4.neigh.default.app_solicit = 0
net.ipv4.neigh.default.ucast_solicit = 3
net.ipv4.neigh.default.mcast_solicit = 3
net.ipv4.tcp_tso_win_divisor = 8
net.ipv4.tcp_moderate_rcvbuf = 1
net.ipv4.tcp_bic_low_window = 14
net.ipv4.tcp_bic_fast_convergence = 1
net.ipv4.tcp_bic = 1
net.ipv4.tcp_vegas_gamma = 2
net.ipv4.tcp_vegas_beta = 6
net.ipv4.tcp_vegas_alpha = 2
net.ipv4.tcp_vegas_cong_avoid = 0
net.ipv4.tcp_westwood = 0
net.ipv4.tcp_no_metrics_save = 0
net.ipv4.ipfrag_secret_interval = 600
net.ipv4.tcp_low_latency = 0
net.ipv4.tcp_frto = 0
net.ipv4.tcp_tw_reuse = 0
net.ipv4.icmp_ratemask = 6168
net.ipv4.icmp_ratelimit = 1000
net.ipv4.tcp_adv_win_scale = 2
net.ipv4.tcp_app_win = 31
net.ipv4.tcp_rmem = 4096 87380 174760
net.ipv4.tcp_wmem = 4096 16384 131072
net.ipv4.tcp_mem = 12288 16384 24576
net.ipv4.tcp_dsack = 1
net.ipv4.tcp_ecn = 0
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_fack = 1
net.ipv4.tcp_orphan_retries = 0
net.ipv4.inet_peer_gc_maxtime = 120
net.ipv4.inet_peer_gc_mintime = 10
net.ipv4.inet_peer_maxttl = 600
net.ipv4.inet_peer_minttl = 120
net.ipv4.inet_peer_threshold = 65664
net.ipv4.igmp_max_msf = 10
net.ipv4.igmp_max_memberships = 20
net.ipv4.route.secret_interval = 600
net.ipv4.route.min_adv_mss = 256
net.ipv4.route.min_pmtu = 552
net.ipv4.route.mtu_expires = 600
net.ipv4.route.gc_elasticity = 8
net.ipv4.route.error_burst = 5000
net.ipv4.route.error_cost = 1000
net.ipv4.route.redirect_silence = 20480
net.ipv4.route.redirect_number = 9
net.ipv4.route.redirect_load = 20
net.ipv4.route.gc_interval = 60
net.ipv4.route.gc_timeout = 300
net.ipv4.route.gc_min_interval = 0
net.ipv4.route.max_size = 8192
net.ipv4.route.gc_thresh = 512
net.ipv4.route.max_delay = 10
net.ipv4.route.min_delay = 2
net.ipv4.icmp_ignore_bogus_error_responses = 0
net.ipv4.icmp_echo_ignore_broadcasts = 0
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.ip_local_port_range = 1024 4999
net.ipv4.tcp_max_syn_backlog = 256
net.ipv4.tcp_rfc1337 = 0
net.ipv4.tcp_stdurg = 0
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.ipfrag_time = 30
net.ipv4.ip_dynaddr = 0
net.ipv4.ipfrag_low_thresh = 196608
net.ipv4.ipfrag_high_thresh = 262144
net.ipv4.tcp_max_tw_buckets = 16384
net.ipv4.tcp_max_orphans = 8192
net.ipv4.tcp_synack_retries = 5
net.ipv4.tcp_syn_retries = 5
net.ipv4.ip_nonlocal_bind = 0
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.ip_autoconfig = 0
net.ipv4.ip_default_ttl = 64
net.ipv4.ip_forward = 0
net.ipv4.tcp_retrans_collapse = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.core.somaxconn = 128
net.core.optmem_max = 10240
net.core.message_burst = 10
net.core.message_cost = 5
net.core.mod_cong = 290
net.core.lo_cong = 100
net.core.no_cong = 20
net.core.no_cong_thresh = 10
net.core.netdev_max_backlog = 300
net.core.dev_weight = 64
net.core.rmem_default = 104448
net.core.wmem_default = 104448
net.core.rmem_max = 104448
net.core.wmem_max = 104448
vm.swap_token_timeout = 0
vm.legacy_va_layout = 0
vm.vfs_cache_pressure = 100
vm.block_dump = 0
vm.laptop_mode = 0
vm.max_map_count = 65536
vm.min_free_kbytes = 1436
vm.lower_zone_protection = 0
vm.hugetlb_shm_group = 0
vm.nr_hugepages = 0
vm.swappiness = 60
vm.nr_pdflush_threads = 2
vm.dirty_expire_centisecs = 3000
vm.dirty_writeback_centisecs = 500
vm.dirty_ratio = 40
vm.dirty_background_ratio = 10
vm.page-cluster = 3
vm.overcommit_ratio = 50
vm.overcommit_memory = 0
kernel.ngroups_max = 65536
kernel.printk_ratelimit_burst = 10
kernel.printk_ratelimit = 5
kernel.panic_on_oops = 600
kernel.pid_max = 32768
kernel.overflowgid = 65534
kernel.overflowuid = 65534
kernel.pty.nr = 0
kernel.pty.max = 4096
kernel.random.uuid = ae64d7a4-adcb-46f6-b69f-0cc8d6e5d923
kernel.random.boot_id = de5de18d-2b54-4c75-aa5d-a86876906199
kernel.random.write_wakeup_threshold = 128
kernel.random.read_wakeup_threshold = 64
kernel.random.entropy_avail = 773
kernel.random.poolsize = 512
kernel.threads-max = 2015
kernel.cad_pid = 1
kernel.sysrq = 1
kernel.sem = 250 32000 32 128
kernel.msgmnb = 16384
kernel.msgmni = 16
kernel.msgmax = 8192
kernel.shmmni = 4096
kernel.shmall = 2097152
kernel.shmmax = 33554432
kernel.printk = 7 4 1 7
kernel.ctrl-alt-del = 0
kernel.real-root-dev = 0
kernel.cap-bound = -257
kernel.tainted = 0
kernel.core_pattern = core
kernel.core_uses_pid = 0
kernel.panic = 600
kernel.domainname = (none)
kernel.hostname = machine11
kernel.version = #2 Wed Jan 12 13:36:08 NZDT 2005
kernel.osrelease = 2.6.10
kernel.ostype = Linux
machine15:~# uname -a
Linux machine15 2.6.10 #2 Wed Jan 12 13:36:08 NZDT 2005 i686 unknown
sunrpc.tcp_slot_table_entries = 16
sunrpc.udp_slot_table_entries = 16
sunrpc.nlm_debug = 0
sunrpc.nfsd_debug = 0
sunrpc.nfs_debug = 0
sunrpc.rpc_debug = 0
dev.cdrom.check_media = 0
dev.cdrom.lock = 1
dev.cdrom.debug = 0
dev.cdrom.autoeject = 0
dev.cdrom.autoclose = 1
dev.cdrom.info = CD-ROM information, Id: cdrom.c 3.20 2003/12/17
dev.cdrom.info =
dev.cdrom.info = drive name: hdc
dev.cdrom.info = drive speed: 48
dev.cdrom.info = drive # of slots: 1
dev.cdrom.info = Can close tray: 1
dev.cdrom.info = Can open tray: 1
dev.cdrom.info = Can lock tray: 1
dev.cdrom.info = Can change speed: 1
dev.cdrom.info = Can select disk: 0
dev.cdrom.info = Can read multisession: 1
dev.cdrom.info = Can read MCN: 1
dev.cdrom.info = Reports media changed: 1
dev.cdrom.info = Can play audio: 1
dev.cdrom.info = Can write CD-R: 0
dev.cdrom.info = Can write CD-RW: 0
dev.cdrom.info = Can read DVD: 0
dev.cdrom.info = Can write DVD-R: 0
dev.cdrom.info = Can write DVD-RAM: 0
dev.cdrom.info = Can read MRW: 1
dev.cdrom.info = Can write MRW: 1
dev.cdrom.info = Can write RAM: 1
dev.cdrom.info =
dev.cdrom.info =
dev.hpet.max-user-freq = 64
dev.rtc.max-user-freq = 64
dev.scsi.logging_level = 0
fs.mqueue.msgsize_max = 8192
fs.mqueue.msg_max = 10
fs.mqueue.queues_max = 256
fs.nfs.nlm_tcpport = 0
fs.nfs.nlm_udpport = 0
fs.nfs.nlm_timeout = 10
fs.nfs.nlm_grace_period = 0
fs.aio-max-nr = 65536
fs.aio-nr = 0
fs.lease-break-time = 45
fs.dir-notify-enable = 1
fs.leases-enable = 1
fs.overflowgid = 65534
fs.overflowuid = 65534
fs.dentry-state = 1716 686 45 0 0 0
fs.file-max = 11970
fs.file-nr = 225 0 11970
fs.inode-state = 1642 23 0 0 0 0 0
fs.inode-nr = 1642 23
net.ipv6.conf.eth1.max_addresses = 16
net.ipv6.conf.eth1.force_mld_version = 0
net.ipv6.conf.eth1.router_solicitation_delay = 1
net.ipv6.conf.eth1.router_solicitation_interval = 4
net.ipv6.conf.eth1.router_solicitations = 3
net.ipv6.conf.eth1.dad_transmits = 1
net.ipv6.conf.eth1.autoconf = 1
net.ipv6.conf.eth1.accept_redirects = 1
net.ipv6.conf.eth1.accept_ra = 1
net.ipv6.conf.eth1.mtu = 1500
net.ipv6.conf.eth1.hop_limit = 64
net.ipv6.conf.eth1.forwarding = 0
net.ipv6.conf.eth0.max_addresses = 16
net.ipv6.conf.eth0.force_mld_version = 0
net.ipv6.conf.eth0.router_solicitation_delay = 1
net.ipv6.conf.eth0.router_solicitation_interval = 4
net.ipv6.conf.eth0.router_solicitations = 3
net.ipv6.conf.eth0.dad_transmits = 1
net.ipv6.conf.eth0.autoconf = 1
net.ipv6.conf.eth0.accept_redirects = 1
net.ipv6.conf.eth0.accept_ra = 1
net.ipv6.conf.eth0.mtu = 1500
net.ipv6.conf.eth0.hop_limit = 64
net.ipv6.conf.eth0.forwarding = 0
net.ipv6.conf.lo.max_addresses = 16
net.ipv6.conf.lo.force_mld_version = 0
net.ipv6.conf.lo.router_solicitation_delay = 1
net.ipv6.conf.lo.router_solicitation_interval = 4
net.ipv6.conf.lo.router_solicitations = 3
net.ipv6.conf.lo.dad_transmits = 1
net.ipv6.conf.lo.autoconf = 1
net.ipv6.conf.lo.accept_redirects = 1
net.ipv6.conf.lo.accept_ra = 1
net.ipv6.conf.lo.mtu = 16436
net.ipv6.conf.lo.hop_limit = 64
net.ipv6.conf.lo.forwarding = 0
net.ipv6.conf.default.max_addresses = 16
net.ipv6.conf.default.force_mld_version = 0
net.ipv6.conf.default.router_solicitation_delay = 1
net.ipv6.conf.default.router_solicitation_interval = 4
net.ipv6.conf.default.router_solicitations = 3
net.ipv6.conf.default.dad_transmits = 1
net.ipv6.conf.default.autoconf = 1
net.ipv6.conf.default.accept_redirects = 1
net.ipv6.conf.default.accept_ra = 1
net.ipv6.conf.default.mtu = 1280
net.ipv6.conf.default.hop_limit = 64
net.ipv6.conf.default.forwarding = 0
net.ipv6.conf.all.max_addresses = 16
net.ipv6.conf.all.force_mld_version = 0
net.ipv6.conf.all.router_solicitation_delay = 1
net.ipv6.conf.all.router_solicitation_interval = 4
net.ipv6.conf.all.router_solicitations = 3
net.ipv6.conf.all.dad_transmits = 1
net.ipv6.conf.all.autoconf = 1
net.ipv6.conf.all.accept_redirects = 1
net.ipv6.conf.all.accept_ra = 1
net.ipv6.conf.all.mtu = 1280
net.ipv6.conf.all.hop_limit = 64
net.ipv6.conf.all.forwarding = 0
net.ipv6.neigh.eth1.locktime = 0
net.ipv6.neigh.eth1.proxy_delay = 79
net.ipv6.neigh.eth1.anycast_delay = 99
net.ipv6.neigh.eth1.proxy_qlen = 64
net.ipv6.neigh.eth1.unres_qlen = 3
net.ipv6.neigh.eth1.gc_stale_time = 60
net.ipv6.neigh.eth1.delay_first_probe_time = 5
net.ipv6.neigh.eth1.base_reachable_time = 30
net.ipv6.neigh.eth1.retrans_time = 1000
net.ipv6.neigh.eth1.app_solicit = 0
net.ipv6.neigh.eth1.ucast_solicit = 3
net.ipv6.neigh.eth1.mcast_solicit = 3
net.ipv6.neigh.eth0.locktime = 0
net.ipv6.neigh.eth0.proxy_delay = 79
net.ipv6.neigh.eth0.anycast_delay = 99
net.ipv6.neigh.eth0.proxy_qlen = 64
net.ipv6.neigh.eth0.unres_qlen = 3
net.ipv6.neigh.eth0.gc_stale_time = 60
net.ipv6.neigh.eth0.delay_first_probe_time = 5
net.ipv6.neigh.eth0.base_reachable_time = 30
net.ipv6.neigh.eth0.retrans_time = 1000
net.ipv6.neigh.eth0.app_solicit = 0
net.ipv6.neigh.eth0.ucast_solicit = 3
net.ipv6.neigh.eth0.mcast_solicit = 3
net.ipv6.neigh.lo.locktime = 0
net.ipv6.neigh.lo.proxy_delay = 79
net.ipv6.neigh.lo.anycast_delay = 99
net.ipv6.neigh.lo.proxy_qlen = 64
net.ipv6.neigh.lo.unres_qlen = 3
net.ipv6.neigh.lo.gc_stale_time = 60
net.ipv6.neigh.lo.delay_first_probe_time = 5
net.ipv6.neigh.lo.base_reachable_time = 30
net.ipv6.neigh.lo.retrans_time = 1000
net.ipv6.neigh.lo.app_solicit = 0
net.ipv6.neigh.lo.ucast_solicit = 3
net.ipv6.neigh.lo.mcast_solicit = 3
net.ipv6.neigh.default.gc_thresh3 = 1024
net.ipv6.neigh.default.gc_thresh2 = 512
net.ipv6.neigh.default.gc_thresh1 = 128
net.ipv6.neigh.default.gc_interval = 30
net.ipv6.neigh.default.locktime = 0
net.ipv6.neigh.default.proxy_delay = 79
net.ipv6.neigh.default.anycast_delay = 99
net.ipv6.neigh.default.proxy_qlen = 64
net.ipv6.neigh.default.unres_qlen = 3
net.ipv6.neigh.default.gc_stale_time = 60
net.ipv6.neigh.default.delay_first_probe_time = 5
net.ipv6.neigh.default.base_reachable_time = 30
net.ipv6.neigh.default.retrans_time = 1000
net.ipv6.neigh.default.app_solicit = 0
net.ipv6.neigh.default.ucast_solicit = 3
net.ipv6.neigh.default.mcast_solicit = 3
net.ipv6.mld_max_msf = 10
net.ipv6.ip6frag_secret_interval = 600
net.ipv6.ip6frag_time = 60
net.ipv6.ip6frag_low_thresh = 196608
net.ipv6.ip6frag_high_thresh = 262144
net.ipv6.bindv6only = 0
net.ipv6.icmp.ratelimit = 1000
net.ipv6.route.min_adv_mss = 1
net.ipv6.route.mtu_expires = 600
net.ipv6.route.gc_elasticity = 0
net.ipv6.route.gc_interval = 30
net.ipv6.route.gc_timeout = 60
net.ipv6.route.gc_min_interval = 0
net.ipv6.route.max_size = 4096
net.ipv6.route.gc_thresh = 1024
net.unix.max_dgram_qlen = 10
net.ipv4.conf.eth1.force_igmp_version = 0
net.ipv4.conf.eth1.disable_policy = 0
net.ipv4.conf.eth1.disable_xfrm = 0
net.ipv4.conf.eth1.arp_ignore = 0
net.ipv4.conf.eth1.arp_announce = 0
net.ipv4.conf.eth1.arp_filter = 0
net.ipv4.conf.eth1.tag = 0
net.ipv4.conf.eth1.log_martians = 0
net.ipv4.conf.eth1.bootp_relay = 0
net.ipv4.conf.eth1.medium_id = 0
net.ipv4.conf.eth1.proxy_arp = 0
net.ipv4.conf.eth1.accept_source_route = 1
net.ipv4.conf.eth1.send_redirects = 1
net.ipv4.conf.eth1.rp_filter = 1
net.ipv4.conf.eth1.shared_media = 1
net.ipv4.conf.eth1.secure_redirects = 1
net.ipv4.conf.eth1.accept_redirects = 1
net.ipv4.conf.eth1.mc_forwarding = 0
net.ipv4.conf.eth1.forwarding = 0
net.ipv4.conf.eth0.force_igmp_version = 0
net.ipv4.conf.eth0.disable_policy = 0
net.ipv4.conf.eth0.disable_xfrm = 0
net.ipv4.conf.eth0.arp_ignore = 0
net.ipv4.conf.eth0.arp_announce = 0
net.ipv4.conf.eth0.arp_filter = 0
net.ipv4.conf.eth0.tag = 0
net.ipv4.conf.eth0.log_martians = 0
net.ipv4.conf.eth0.bootp_relay = 0
net.ipv4.conf.eth0.medium_id = 0
net.ipv4.conf.eth0.proxy_arp = 0
net.ipv4.conf.eth0.accept_source_route = 1
net.ipv4.conf.eth0.send_redirects = 1
net.ipv4.conf.eth0.rp_filter = 1
net.ipv4.conf.eth0.shared_media = 1
net.ipv4.conf.eth0.secure_redirects = 1
net.ipv4.conf.eth0.accept_redirects = 1
net.ipv4.conf.eth0.mc_forwarding = 0
net.ipv4.conf.eth0.forwarding = 0
net.ipv4.conf.lo.force_igmp_version = 0
net.ipv4.conf.lo.disable_policy = 1
net.ipv4.conf.lo.disable_xfrm = 1
net.ipv4.conf.lo.arp_ignore = 0
net.ipv4.conf.lo.arp_announce = 0
net.ipv4.conf.lo.arp_filter = 0
net.ipv4.conf.lo.tag = 0
net.ipv4.conf.lo.log_martians = 0
net.ipv4.conf.lo.bootp_relay = 0
net.ipv4.conf.lo.medium_id = 0
net.ipv4.conf.lo.proxy_arp = 0
net.ipv4.conf.lo.accept_source_route = 1
net.ipv4.conf.lo.send_redirects = 1
net.ipv4.conf.lo.rp_filter = 1
net.ipv4.conf.lo.shared_media = 1
net.ipv4.conf.lo.secure_redirects = 1
net.ipv4.conf.lo.accept_redirects = 1
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.lo.forwarding = 0
net.ipv4.conf.default.force_igmp_version = 0
net.ipv4.conf.default.disable_policy = 0
net.ipv4.conf.default.disable_xfrm = 0
net.ipv4.conf.default.arp_ignore = 0
net.ipv4.conf.default.arp_announce = 0
net.ipv4.conf.default.arp_filter = 0
net.ipv4.conf.default.tag = 0
net.ipv4.conf.default.log_martians = 0
net.ipv4.conf.default.bootp_relay = 0
net.ipv4.conf.default.medium_id = 0
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.default.accept_source_route = 1
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.shared_media = 1
net.ipv4.conf.default.secure_redirects = 1
net.ipv4.conf.default.accept_redirects = 1
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.all.force_igmp_version = 0
net.ipv4.conf.all.disable_policy = 0
net.ipv4.conf.all.disable_xfrm = 0
net.ipv4.conf.all.arp_ignore = 0
net.ipv4.conf.all.arp_announce = 0
net.ipv4.conf.all.arp_filter = 0
net.ipv4.conf.all.tag = 0
net.ipv4.conf.all.log_martians = 0
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.medium_id = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.send_redirects = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.all.shared_media = 1
net.ipv4.conf.all.secure_redirects = 1
net.ipv4.conf.all.accept_redirects = 1
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.forwarding = 0
net.ipv4.neigh.eth1.locktime = 99
net.ipv4.neigh.eth1.proxy_delay = 79
net.ipv4.neigh.eth1.anycast_delay = 99
net.ipv4.neigh.eth1.proxy_qlen = 64
net.ipv4.neigh.eth1.unres_qlen = 3
net.ipv4.neigh.eth1.gc_stale_time = 60
net.ipv4.neigh.eth1.delay_first_probe_time = 5
net.ipv4.neigh.eth1.base_reachable_time = 30
net.ipv4.neigh.eth1.retrans_time = 99
net.ipv4.neigh.eth1.app_solicit = 0
net.ipv4.neigh.eth1.ucast_solicit = 3
net.ipv4.neigh.eth1.mcast_solicit = 3
net.ipv4.neigh.eth0.locktime = 99
net.ipv4.neigh.eth0.proxy_delay = 79
net.ipv4.neigh.eth0.anycast_delay = 99
net.ipv4.neigh.eth0.proxy_qlen = 64
net.ipv4.neigh.eth0.unres_qlen = 3
net.ipv4.neigh.eth0.gc_stale_time = 60
net.ipv4.neigh.eth0.delay_first_probe_time = 5
net.ipv4.neigh.eth0.base_reachable_time = 30
net.ipv4.neigh.eth0.retrans_time = 99
net.ipv4.neigh.eth0.app_solicit = 0
net.ipv4.neigh.eth0.ucast_solicit = 3
net.ipv4.neigh.eth0.mcast_solicit = 3
net.ipv4.neigh.lo.locktime = 99
net.ipv4.neigh.lo.proxy_delay = 79
net.ipv4.neigh.lo.anycast_delay = 99
net.ipv4.neigh.lo.proxy_qlen = 64
net.ipv4.neigh.lo.unres_qlen = 3
net.ipv4.neigh.lo.gc_stale_time = 60
net.ipv4.neigh.lo.delay_first_probe_time = 5
net.ipv4.neigh.lo.base_reachable_time = 30
net.ipv4.neigh.lo.retrans_time = 99
net.ipv4.neigh.lo.app_solicit = 0
net.ipv4.neigh.lo.ucast_solicit = 3
net.ipv4.neigh.lo.mcast_solicit = 3
net.ipv4.neigh.default.gc_thresh3 = 1024
net.ipv4.neigh.default.gc_thresh2 = 512
net.ipv4.neigh.default.gc_thresh1 = 128
net.ipv4.neigh.default.gc_interval = 30
net.ipv4.neigh.default.locktime = 99
net.ipv4.neigh.default.proxy_delay = 79
net.ipv4.neigh.default.anycast_delay = 99
net.ipv4.neigh.default.proxy_qlen = 64
net.ipv4.neigh.default.unres_qlen = 3
net.ipv4.neigh.default.gc_stale_time = 60
net.ipv4.neigh.default.delay_first_probe_time = 5
net.ipv4.neigh.default.base_reachable_time = 30
net.ipv4.neigh.default.retrans_time = 99
net.ipv4.neigh.default.app_solicit = 0
net.ipv4.neigh.default.ucast_solicit = 3
net.ipv4.neigh.default.mcast_solicit = 3
net.ipv4.tcp_tso_win_divisor = 8
net.ipv4.tcp_moderate_rcvbuf = 1
net.ipv4.tcp_bic_low_window = 14
net.ipv4.tcp_bic_fast_convergence = 1
net.ipv4.tcp_bic = 1
net.ipv4.tcp_vegas_gamma = 2
net.ipv4.tcp_vegas_beta = 6
net.ipv4.tcp_vegas_alpha = 2
net.ipv4.tcp_vegas_cong_avoid = 0
net.ipv4.tcp_westwood = 0
net.ipv4.tcp_no_metrics_save = 0
net.ipv4.ipfrag_secret_interval = 600
net.ipv4.tcp_low_latency = 0
net.ipv4.tcp_frto = 0
net.ipv4.tcp_tw_reuse = 0
net.ipv4.icmp_ratemask = 6168
net.ipv4.icmp_ratelimit = 1000
net.ipv4.tcp_adv_win_scale = 2
net.ipv4.tcp_app_win = 31
net.ipv4.tcp_rmem = 4096 87380 174760
net.ipv4.tcp_wmem = 4096 16384 131072
net.ipv4.tcp_mem = 12288 16384 24576
net.ipv4.tcp_dsack = 1
net.ipv4.tcp_ecn = 0
net.ipv4.tcp_reordering = 3
net.ipv4.tcp_fack = 1
net.ipv4.tcp_orphan_retries = 0
net.ipv4.inet_peer_gc_maxtime = 120
net.ipv4.inet_peer_gc_mintime = 10
net.ipv4.inet_peer_maxttl = 600
net.ipv4.inet_peer_minttl = 120
net.ipv4.inet_peer_threshold = 65664
net.ipv4.igmp_max_msf = 10
net.ipv4.igmp_max_memberships = 20
net.ipv4.route.secret_interval = 600
net.ipv4.route.min_adv_mss = 256
net.ipv4.route.min_pmtu = 552
net.ipv4.route.mtu_expires = 600
net.ipv4.route.gc_elasticity = 8
net.ipv4.route.error_burst = 5000
net.ipv4.route.error_cost = 1000
net.ipv4.route.redirect_silence = 20480
net.ipv4.route.redirect_number = 9
net.ipv4.route.redirect_load = 20
net.ipv4.route.gc_interval = 60
net.ipv4.route.gc_timeout = 300
net.ipv4.route.gc_min_interval = 0
net.ipv4.route.max_size = 8192
net.ipv4.route.gc_thresh = 512
net.ipv4.route.max_delay = 10
net.ipv4.route.min_delay = 2
net.ipv4.icmp_ignore_bogus_error_responses = 0
net.ipv4.icmp_echo_ignore_broadcasts = 0
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.ip_local_port_range = 1024 4999
net.ipv4.tcp_max_syn_backlog = 256
net.ipv4.tcp_rfc1337 = 0
net.ipv4.tcp_stdurg = 0
net.ipv4.tcp_abort_on_overflow = 0
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_fin_timeout = 60
net.ipv4.tcp_retries2 = 15
net.ipv4.tcp_retries1 = 3
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_keepalive_probes = 9
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.ipfrag_time = 30
net.ipv4.ip_dynaddr = 0
net.ipv4.ipfrag_low_thresh = 196608
net.ipv4.ipfrag_high_thresh = 262144
net.ipv4.tcp_max_tw_buckets = 16384
net.ipv4.tcp_max_orphans = 8192
net.ipv4.tcp_synack_retries = 5
net.ipv4.tcp_syn_retries = 5
net.ipv4.ip_nonlocal_bind = 0
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.ip_autoconfig = 0
net.ipv4.ip_default_ttl = 64
net.ipv4.ip_forward = 0
net.ipv4.tcp_retrans_collapse = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.core.somaxconn = 128
net.core.optmem_max = 10240
net.core.message_burst = 10
net.core.message_cost = 5
net.core.mod_cong = 290
net.core.lo_cong = 100
net.core.no_cong = 20
net.core.no_cong_thresh = 10
net.core.netdev_max_backlog = 300
net.core.dev_weight = 64
net.core.rmem_default = 104448
net.core.wmem_default = 104448
net.core.rmem_max = 104448
net.core.wmem_max = 104448
vm.swap_token_timeout = 0
vm.legacy_va_layout = 0
vm.vfs_cache_pressure = 100
vm.block_dump = 0
vm.laptop_mode = 0
vm.max_map_count = 65536
vm.min_free_kbytes = 1436
vm.lower_zone_protection = 0
vm.hugetlb_shm_group = 0
vm.nr_hugepages = 0
vm.swappiness = 60
vm.nr_pdflush_threads = 2
vm.dirty_expire_centisecs = 3000
vm.dirty_writeback_centisecs = 500
vm.dirty_ratio = 40
vm.dirty_background_ratio = 10
vm.page-cluster = 3
vm.overcommit_ratio = 50
vm.overcommit_memory = 0
kernel.ngroups_max = 65536
kernel.printk_ratelimit_burst = 10
kernel.printk_ratelimit = 5
kernel.panic_on_oops = 600
kernel.pid_max = 32768
kernel.overflowgid = 65534
kernel.overflowuid = 65534
kernel.pty.nr = 0
kernel.pty.max = 4096
kernel.random.uuid = 061b1157-0c2b-463d-88d2-7bc5ef7604c0
kernel.random.boot_id = ec1ee022-7078-4ab8-9b6b-137e4e8aab7f
kernel.random.write_wakeup_threshold = 128
kernel.random.read_wakeup_threshold = 64
kernel.random.entropy_avail = 3
kernel.random.poolsize = 512
kernel.threads-max = 2015
kernel.cad_pid = 1
kernel.sysrq = 1
kernel.sem = 250 32000 32 128
kernel.msgmnb = 16384
kernel.msgmni = 16
kernel.msgmax = 8192
kernel.shmmni = 4096
kernel.shmall = 2097152
kernel.shmmax = 33554432
kernel.printk = 7 4 1 7
kernel.ctrl-alt-del = 0
kernel.real-root-dev = 0
kernel.cap-bound = -257
kernel.tainted = 0
kernel.core_pattern = core
kernel.core_uses_pid = 0
kernel.panic = 600
kernel.domainname = (none)
kernel.hostname = machine15
kernel.version = #2 Wed Jan 12 13:36:08 NZDT 2005
kernel.osrelease = 2.6.10
kernel.ostype = Linux

28 Feb 2007

Some results

Filed under: Network Simulation Cradle — sammydre @ 9:05 pm

My emulation scenario “em-6″ is now finished. I think it finished about an hour ago, which means the experiment took about… 3 days?

Looks pretty good. It would seem I improved my emulation scripts to be robust enough to run for that amount of time. Yay. I’ll take a look at the results tomorrow or something – need to do some chores right now. I’ve put the results on my laptop at least.

In other news, still running “sim-37″ on my desktop to regenerate performance results. The large bandwidth-delay product simulation takes a long time to simulate. No idea how much longer that will require, it has been simulating for many hours now. Unfortunately it hasn’t been helped by a couple of reboots of my machine (I expect due to heat problems).

25 Feb 2007

PhD stuff

Filed under: Network Simulation Cradle — sammydre @ 12:17 pm

So I’m having to re-run a few experiments to sort out some results for my thesis. Not too many need to be re-run, just a few that I didn’t save all the results for or something silly like that. Also one or two that I didn’t get conclusive enough results from.

Emulations: em-6

Re-running emulations and have been doing so for a week or two by now. Unfortunately I had stuffed up my emulations twice so I didn’t get any useful results. First of all copying files off machines would randomly pause indefinitely, then second I realised I had stuffed up the router config so I didn’t do any traffic shaping, completely destroying the point of the experiment.

The second problem was solved by putting the correct IP address ranges into the IPFW config. My emulation scripts are a bit simplistic and they didn’t know how to figure these out for themselves.

The first problem required writing some Python code to kill off the copy process if it took too long. I suspect there is a bug elsewhere in the software stack I am using, but I really don’t have time to investigate this, so killing the copy if it stops seems like a reasonable approach. The copy always seems to copy all the data, just sometimes (maybe 1 time in 5 or so) it doesn’t close the connection. I think this is specific to OpenBSD. While it would be easy to blame OpenBSD, I think it much more likely some of mine or Brendon’s software which is being used here is very dodgy. Anyway, there isn’t a nice way to wait on process completion with a timeout like in Windows (WaitForSingleObject anybody?). I hacked up a nasty polling solution; I should perhaps really have investigated adding a SIGCHLD handler or using SIGALRM. My way is good enough for the situation and the tests now seem to be running fine. Got about 22 completed of 900 so far; might take a week or so for them to finish.

Performance simulations: sim-37

I had to build ns-2, NSC on my home desktop. Didn’t seem to have these set up there. I was getting a weird error from SCons until I realised it doesn’t install builders for e.g., CXXFile until you actually install flex! So I installed all the software I needed (gcc-3.3, gcc-3.4, g++-3.3, g++-3.4, flex, bison, libpcap) and built all required software.

After setting my LD_LIBRARY_PATH it seemed to run OK. Then I found that I needed malloc_debug.so, which I checked out. It was renamed to heapprof.so a while back. I updated my scripts to use the new name and new path to ns-2 and ran them. First, it died at the end of a long simulation due to me not patching the ns-2 FullTCP agent with my minor change that counts the amount of bytes received in a 64-bit int. Second, it died during shutdown due to a SIGFPE when deallocating memory at process shutdown.

I fixed a couple of bugs in heapprof.so which led to this and it got a bit better. Unfortunately this still seems to happen for some processes (not all). I’ve checked in some bugfixes but I really can’t figure out what is going on now; it looks like we are simply freeing valid memory that was allocated earlier; yet we get a SIGFPE. Unfortunately our test app, “sieve”, works fine. The setting of the env var MALLOC_CHECK_ affects things here. I just don’t have time to investigate this right now.

So I’ve turned off the memory sims and I’m just running the CPU sims right now. Still haven’t quite decided which ones I actually need to re-run; for now I’ve just started them all and I’ll figure out which is important later.

Weka and sim-34

Also installed Weka so I could regenerate the stats I was trying to report. This went smoothly, with the exact same figures as last time. I have now saved all the output in Subversion — can’t believe I forgot to do this last time! It did take a while to figure out how I generated the second set of difference data for Weka, but after staring at the screen for a while I realised it was very simple. I put some very simplistic code to generate this into a script and put that in Subversion as well.

Just need a bit more info on attribute selection stuff. Need to justify that the Information Gain attribute selection algorithm is good enough for us? Seems to be a fairly “de facto standard” attribute selection algorithm to me, but then, I don’t really know much about this area.

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