Hi all,
On a php driven webpage we do 2 asynchronous requests with an
xmlhttprequest immediately after the page loads. The first request
returns without a problem, the second never returns and leaves the
server (ubuntu dapper drake with apache 2.2.4) with an apache process
using (according to the top command) 100% CPU. If you try, in the same
browser window, to go to an other page the request wont load and
stopping the server does not kill the process.
I did some debugging with xDebug on the second request after the
pageload (which does not use any database functions) and doing this, or
in other words delaying the response of the service, lets the request
finish fine and doesn't leave the server with an unfinished process.
Any idea what to do?
I have the impression this has something to do with concurrent request
handling, MPM. We're using prefork and the settings are:
# prefork
MPM
# StartServers: number of server processes to
start
# MinSpareServers: minimum number of server processes which are kept
spare
# MaxSpareServers: maximum number of server processes which are kept
spare
# MaxClients: maximum number of server processes allowed to
start
# MaxRequestsPerChild: maximum number of requests a server process
serves
<IfModule
mpm_prefork_module>
StartServers
10
MinSpareServers
10
MaxSpareServers
100
MaxClients
150
MaxRequestsPerChild
0
</IfModule>
Thanks, Evert
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