From: Rick Jones <rick.jones2@hp.com>
To: James Courtier-Dutton <James@superbug.co.uk>
Cc: netdev@vger.kernel.org
Subject: Re: Max number of TCP sessions
Date: Thu, 16 Nov 2006 14:52:08 -0800 [thread overview]
Message-ID: <1163717529.26263.1.camel@raj-laptop> (raw)
In-Reply-To: <455CC8C9.2050509@superbug.co.uk>
On Thu, 2006-11-16 at 20:23 +0000, James Courtier-Dutton wrote:
> Hi,
>
> For a host using a Pentium 4 CPU at 2.8Mhz, what is a sensible max value
> for number of TCP sessions this host could run under Linux?
> Bandwidth per TCP session is likely to be about 10kbytes/second.
To a first order, and assuming that there is nearly no user-space
processing for those TCP connections (TCP is a transport not a session
protocol :) you could take a netperf TCP_RR test result - using the
service demand - usec of CPU/KB transferred you could then do some back
of the envelope calculations as to the number of 10 KByte/s connections
you could support. It would be a bit of handwaving, but give yourself
say a 20% pad and you'll probably be OK.
rick jones
>
> Kind Regards
>
> James
> -
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prev parent reply other threads:[~2006-11-16 22:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-16 20:23 Max number of TCP sessions James Courtier-Dutton
2006-11-16 22:21 ` Stephen Hemminger
2006-11-16 22:52 ` Rick Jones [this message]
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