From: Yannis Tsakiris <gtsakiris@xxxxxxxxx> To: <users@xxxxxxxxxxxxxxxx> Date: Monday, March 28, 2005, 3:27:24 PM Subject: [users@httpd] Strange Problem Monday, March 28, 2005, 3:27:24 PM, you wrote: > Hi there, > This is a problem I'm facing for a long time. > I have a server which serves advertisement banners (with > phpAdsNew). The apache web server is the only application this > server runs (there is no database server or other service running). > The machine consists of two pIII CPUs at 1000MHz and is equiped with 1 GB of RAM. > It serves approximately 300,000 requests per hour at rush hour. > The load average reaches a peak of 0.50 at this load. > So far so good, but in an arbitrary moment all apache processes > stop serving requests, and all of the processes are trying to > consume a lot of cpu time, and load average is increasing very fast > (at the end the load average is almost equal to the number of > running apache processes, which is 500). In this condition the > server is not responding and all I can do is to reboot the machine. > When this strange thing happens varies. It can happen after a > few hours of uptime, or it can suddenly happen after 20 days since > the last reboot. Anyway, it is ok to say that this thing happens > about once in a week. > I have read the logs, both apache's and system's but there is > nothing. Not a clue. Everything seems to stop at the time of the > "crash". All logs stop at this moment without a error message. > There is a crontab that restarts the apache server every day, > late at night when the traffic is in its lowest. (but this does not > seem to help...) > The versions of the software I'm using is: SuSE Linux 9.1 , > Linux kernel 2.4.21-99-smp4G (the precompiled kernel that comes with > SuSE 9.1), Apache 2.0.52 , PHP 4.3.11, Turck mm-cache 2.4.6 > Any ideas? Your help will be very much appreciated. > Yannis Tsakiris > How many servers are busy during the crash? (if you are monitoring Apache status through mrtg graphs) Anything in /var/log/messsages, warn ? It can be a hardware problem that everything hangs. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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