How to check current pm.max_children setting?

Question

I have modified pm.max_children in /opt/plesk/php/7.0/etc/php-fpm.d/domain.com.conf file.

I restarted the php70-fpm service and want to check whether my settings are enabled or not.

How can I check this setting?

iizno · Answer 1 · 2019-03-01T15:47:35.480

4

If you just want to know how many workers are currently running, you can try with HTOP, do a htop and filter (F4) with "php-fpm".

Or with ps

ps aux | grep "php-fpm: pool"

If you want precise and technical informations, you can use the fpm status page:

Add this to you pool configuration:

pm.status_path = /status

Then this in your nginx configuration: (adapt to your configuration)

location ~ ^/(status|ping)$ {
     access_log off;
     allow 127.0.0.1;
     allow 10.10.10.10#your-ip;
     deny all;
     include fastcgi_params;
     fastcgi_pass 127.0.0.1:9000;
}

You can then use CURL to query with:

 curl http://localhost/status

Which gives you something like:

pool:                 www
process manager:      dynamic
start time:           01/Mar/2019:15:16:10 +0100
start since:          2551
accepted conn:        7843
listen queue:         0
max listen queue:     0
listen queue len:     0
idle processes:       8
active processes:     2
total processes:      10
max active processes: 10
max children reached: 0

More informations / Source: https://easyengine.io/tutorials/php/fpm-status-page

edited Mar 01 '19 at 15:47

answered Feb 28 '19 at 12:06

iizno

283
2
9

1

I can only see the currently running php-fpm processes but I can not see what the max value is. – Theo Feb 28 '19 at 14:13
1

I edited my answer with a more complete method. – iizno Mar 01 '19 at 15:47
so the max children value is the number of "max active processes"? – Theo Mar 01 '19 at 18:08
1

I think so, yes. Can someone confirm ? – iizno Mar 08 '19 at 13:01
1

according to comments in the default php-fpm `.conf` file: `max active processes - the maximum number of active processes since FPM has started` -- so this answer is incorrect – johnL Oct 07 '19 at 21:43

How to check current pm.max_children setting?

1 Answers1