Filip Hajny a écrit : > Yes, well, my point was... if you care about shared memory, then > constrain mod_fcgid to a single PHP process only, let the PHP process > fork its own children and hope they will be able to process all > requests before mod_fcgid considers the single process busy and you > end up getting 503. > My english is not really good, so maybe I very badly explained my original problem, but all the problem is here : letting PHP do that doesn't work at all.
I use this configuration for mod_fcgid : DefaultMaxClassProcessCount 1 DefaultMinClassProcessCount 1 And in the PHP wrapper : export PHP_FCGI_CHILDREN=8 So I obtain this php5-cgi processes : init(1)─┬─apache2(1591)─┬─apache2(22940)───php5-cgi(23015)─┬─php5-cgi(23017) │ │ ├─php5-cgi(23018) │ │ ├─php5-cgi(23019) │ │ ├─php5-cgi(23020) │ │ ├─php5-cgi(23021) │ │ ├─php5-cgi(23022) │ │ ├─php5-cgi(23023) │ │ └─php5-cgi(23024) I test with that PHP script : <?php sleep(5); echo 'OK'; ?> Then I launch 4 concurrent access though that script : #!/bin/sh wget http://localhost/test.php -q -O test1.log & wget http://localhost/test.php -q -O test2.log & wget http://localhost/test.php -q -O test3.log & wget http://localhost/test.php -q -O test4.log & wait Then : time ./test.sh > scrubby:~# time ./check > > real 0m21.012s > user 0m0.004s > sys 0m0.012s Or also : ab -c 4 -n 4 http://localhost/test.php > Concurrency Level: 4 > Time taken for tests: 22.2176 seconds > Complete requests: 4 > Failed requests: 0 > Write errors: 0 > Total transferred: 684 bytes > HTML transferred: 8 bytes > Requests per second: 0.18 [#/sec] (mean) > Time per request: 22002.176 [ms] (mean) > Time per request: 5500.544 [ms] (mean, across all concurrent requests) The benchmark should past 5 seconds per page, no ? The php forks are not usefull with mod_fgid, or my setup have a serious problem. Of course, if I remove PHP_FCGI_CHILDREN and increase DefaultMaxClassProcessCount, this works very well but loose all the shared memory stuff (APC, Xcache, etc) : > scrubby:~# time ./check > > real 0m5.008s > user 0m0.004s > sys 0m0.004s Olivier ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Mod-fcgid-users mailing list Mod-fcgid-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mod-fcgid-users
