Server still overload after changing from prefork mpm to event mpm

Asked Jun 03 '19 at 18:52

Active Jun 03 '19 at 18:52

Viewed 186 times

On Ubuntu 14 with Apache/2.4.7. It is 6 CPU cores with 16GB RAM from Linode.com.

Even after changing to Event MPM it still is overloaded in the same way.

Till noon it was stopping temporarily then I tweaked PHP-FPM with these new values in www.conf:

Changed max_children from 5 to 40
Changed max_requests from 500 to 1000

Till night now the sites haven't stopped .

Current mpm_event.conf:

<IfModule mpm_event_module>
        StartServers             5
        MinSpareThreads          55
        MaxSpareThreads          150
        ThreadLimit              700
        ThreadsPerChild          320
        MaxRequestWorkers         4800
        MaxConnectionsPerChild   0
</IfModule>

As in the photo, changed to MPM event at 12:00 AM ( it is exactly 24 hours ago and photo taken after noon) but there is no reduction of CPU load:

asked Jun 03 '19 at 18:52

user5858

1

Why do you say this is overloaded? You seem to have plenty of available CPU capacity. – Michael Hampton Jun 03 '19 at 19:00
@MichaelHampton I've read that MPM event is much more efficient than prefork but here I don't see anything like it. – user5858 Jun 06 '19 at 15:47
It is much more efficient. But your CPU usage is coming from PHP, not from Apache. – Michael Hampton Jun 06 '19 at 20:06
@MichaelHampton then should I optimize php-fpm? – user5858 Jun 07 '19 at 04:43
You should optimize your application code. Changing settings in php-fpm will not magically make your code do less than it already does. – Michael Hampton Jun 07 '19 at 18:15

Server still overload after changing from prefork mpm to event mpm

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