On 7/3/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Hi,
I have Apache 2.0.53 running on linux ( 2.4.19 kernel ). I have
observed that after running for 2 days OR after load testing (around 200
simultaneous connections for 30 minutes), it hangs, i.e. client is able to
connect to server socket but no http response comes back. It is using SSL,
so SSL cert warning comes but no further processing is done.
Following is MPM conf:
<IfModule worker.c>
ThreadLimit 150
ServerLimit 100
ThreadsPerChild 30
MaxClients 3000
StartServers 2
#MinSpareThreads 20
#MaxSpareThreads 100
MinSpareThreads 20
MaxSpareThreads 100
MaxRequestsPerChild 2000
At this moment, the apache processes also not get reduced. It always remain
the same (around 400) till i restart apache.
strace on httpd processes show that they are blocked in write to some pipe.
There are no segmentation faults or nasty errors in error logs. Situation
does not resolve by graceful restart too.
Any hint, how i should resolve this issue?
First, it is pretty-much pointless to be debugging problems with an
old version of the server. Start by upgrading to at least the most
recent 2.0 (and preferably 2.2.2).
Second, you can attach to the hung processes with a debugger and get a
backtrace to see where they are struck. See:
http://httpd.apache.org/dev/debugging.html
Third, your MaxRequestsPerChild looks way too low. This should
optimally be set to 0. This counts requests to all threads in a
process, so it will force apache to be recycling processes very
frequently.
Joshua.
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