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From <>
Subject [users@httpd] Apache2 performance tunning : MaxClients problem
Date Thu, 20 Sep 2007 07:32:31 GMT

   I'm using Ubuntu 6.10 32bits with Apache 2.0.55 for an intranet
server. The current server is a FUJITSU SIEMENS PRIMERGY RX200S2 with 2
Intel Xeon CPU 3.00GHz with HT and 4GB of RAM.
  About the stats per month (by awstats), it serves around 54000 visits,
1'000'000 pages provided, 6'000'000 of hits and 120Go of data provided.
  The server is mostly used during the day with some peaks during 4
hours in the morning. All php/html pages are mounted from a NFS filer
via a 1Gb network.

  About the server load : load1 ~ "2.5" and load5 "1.4". About memory,
25% for programs, 55% of cached and ~ 15% pure free

  FINALLY, my question is : 
   I would like to allow more machine resources to Apache to handle more
connections and reduce the time to display a page.
   I reduce the timeout to 45 and :
    <IfModule prefork.c>
    StartServers         		15
    MinSpareServers      		10
    MaxSpareServers      		20
    MaxClients          		256
    MaxRequestsPerChild   	0

    I tried the put MaxClients  = 512 but I have a message error : 
      WARNING: MaxClients of 512 exceeds ServerLimit value of 256
       lowering MaxClients to 256.  To increase, please see the
    I think that's the default Ubuntu options.
    Is this "maxclient" the way to go to have significant increase of
performance? Should I recompile Apache for this? Is there any point I
should tune instead of MaxClient ?

     Thanks by advance for any advices,


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