Connections on the varnishbox

Eivind Bengtsson ebe at
Thu Oct 25 14:32:07 CEST 2007

Do I understand you correctly

I need to set -p thread_pool_max = 1500
How many thread pools do I have ? (default?)

Howcome I can have more than 1500 connections now, without changing the 
Thread_pool_max ?

The only change I've made is to ulimit -n 131072
(which is default in the debian etch 1.1.1 package ...)

Thanks again for any help :-)


Dag-Erling Smørgrav wrote:
> Eivind Bengtsson <ebe at> writes:
>> How many open TCP-connections can a standard linuxbox 64bit 2.6.17
>> kernel - GB ethernet interface...  When is it okay for me to start
>> worrying?  1000 connections, 2000, 3 ?
> It depends on many factors (hardware, OS version, application, access
> pattern etc.) so you'll have to find out for yourself.  You'll have to
> increase thread_pool_max, as the default is 1000.

Eivind Bengtsson
Systemadministrator - Cand.merc.(dat)
Danmarks Meteorologiske Institut
Lyngbyvej 100
2100 København Ø
Direkte tlf. : 39157544
Email: ebe at
echo 'This is not a pipe.' | cat -> /dev/tty

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