* [9fans] dealing with pessimal tcp stacks
@ 2010-05-25 21:30 erik quanstrom
2010-05-26 0:06 ` erik quanstrom
0 siblings, 1 reply; 2+ messages in thread
From: erik quanstrom @ 2010-05-25 21:30 UTC (permalink / raw)
To: 9fans
i had some trouble with a very badly behaved tcp stack
"crashing" my terminal by causing the resequence queues
of >900 tinygrams. there's a little writeup here
http://www.quanstro.net/plan9/tcpreseq/index.html
the short story is that limiting the resequence queue
to a "reasonable" number of packets solves the problem.
i choose reasonable=15*(scale+1).
there's a diff here:
http://www.quanstro.net/plan9/tcpreseq/tcpdiff
i'd be interested in any feedback.
- erik
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [9fans] dealing with pessimal tcp stacks
2010-05-25 21:30 [9fans] dealing with pessimal tcp stacks erik quanstrom
@ 2010-05-26 0:06 ` erik quanstrom
0 siblings, 0 replies; 2+ messages in thread
From: erik quanstrom @ 2010-05-26 0:06 UTC (permalink / raw)
To: quanstro, 9fans
On Tue May 25 17:31:50 EDT 2010, quanstro@quanstro.net wrote:
> i had some trouble with a very badly behaved tcp stack
> "crashing" my terminal by causing the resequence queues
> of >900 tinygrams. there's a little writeup here
> http://www.quanstro.net/plan9/tcpreseq/index.html
>
> the short story is that limiting the resequence queue
> to a "reasonable" number of packets solves the problem.
> i choose reasonable=15*(scale+1).
>
> there's a diff here:
> http://www.quanstro.net/plan9/tcpreseq/tcpdiff
>
> i'd be interested in any feedback.
to reproduce
for(i in 1 2 3 4 5){
hget hget http://www.decuslib.com/decus/uni87a/pub/4.2_bugs>/dev/null &
}
- erik
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