max_children_reached always 1

[phutoan31299]

Hello, firstly, i want to say thank you for a amazing exporter and then i want to show u my problem and please help me. Why max_children_reach always is 1 since turn on exporter, this number don't increase although the process is reached max_children (pm.max_children = 4) many times (# active processes = 4 and request per process always running with 4 process)? Can u explain for me cause maybe i understand wrong ways :( Tks a lot!

[matejzero]

This is by design. max_children_reach is collected from php-fpm status, where it only reports if max was reached since php-fpm started and not how many times is was reached. It's a boolean value.

[estahn]

@matejzero, As far as I know, php-fpm should report the number of times a pool reached max children.

I have documented here, but are you saying this is not the case?

# HELP phpfpm_max_children_reached The number of times, the process limit has been reached, when pm tries to start more children (works only for pm 'dynamic' and 'ondemand').
# TYPE phpfpm_max_children_reached counter

See: https://github.com/php/php-src/blob/44c7128fb726696a7c23ff694d1077cf0cf435d4/sapi/fpm/fpm/fpm_scoreboard.c#L144

[estahn]

@phutoan31299 Can you share your PHP-FPM pool config?

[phutoan31299]

@phutoan31299 Can you share your PHP-FPM pool config? @estahn Thanks u. My pool conf is here

emergency_restart_interval = 1m
process_control_timeout = 10s
[www]
user = ttvtnet
group = ttvtnet

pm = dynamic pm.max_children = 4 pm.start_servers = 3 pm.min_spare_servers = 2 pm.max_spare_servers = 4 pm.max_requests = 200

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