Re: Getting 5000 concurrent connections and 400 requests per second with Apache

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On 7/24/07, Abhinav Bhagwat <abhinavbhagwat@xxxxxxxxx> wrote:
The apache version is 2.0.52-25 running on RHEL 4. The content is a 1k html
file.

That's a pretty-old version, and if you want the bleeding-edge of
performance, you should use a modern version. But on the other hand, I
don't see any specific reason why upgrading would fix this particular
problem.


When shutting down apache i see the error below in the logs othewise when
apache is running there is no error.

[error] child process 16801  still did not exit, sending a SIGKILL

The service httpd status command shows about 5000 process ids when the load
is at its peak.
Can you give some clue on what other networking logs should i check for?

You should check basic things like physical memory free and processor
usage to make sure the server isn't swapping itself to death. And you
should check the basic system logs like /var/log/messages, etc. Given
that it seems like apache has plenty of capacity to spare (MaxClients
10000 with 5000 active), I'd take a hard look at local OS and
networking issues on both your client and server.

Joshua.

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