Question Performance and high IO: vhostmng-content

[Alban Staehli]

Server operating system version

AlmaLinux 8.10 (Cerulean Leopard)

Plesk version and microupdate number

Plesk Obsidian 18.0.72 Update #3

Hi,

I have succesfully reduced IO impact for vhostmng-find, thanks to the following article: Question - vhostmng-find processe consume CPU .
I have tried to apply the same to statistics_collector and vhostmng-content .

Works well for statistics_collector, but not for vhostmng-content (it creates an ever running loop using 100% CPU).

Is there a way to use ionice as well for the execution of vhostmng-content?

Thank you.

 

[Sebahat.hadzhi]

Hi, @Alban Staehli . What you can do is adjust the niceness and execute the Daimly maintenance task with lower priority:

nice -n19 /usr/local/psa/bin/sw-engine-pleskrun /usr/local/psa/admin/plib/DailyMaintainance/script.php >/dev/null 2>&1

While the process is running you can identify which is/are the problematic subscriptions that take the longest:

ps auxwwff | grep vhostmng-find

That will show you the corresponding system user.

You can also use the strace utility to identify which directories take the longest:

strace -p PID-of-vhostmng-find

 

[Alban Staehli]

Hi, @Alban Staehli . What you can do is adjust the niceness and execute the Daimly maintenance task with lower priority:

nice -n19 /usr/local/psa/bin/sw-engine-pleskrun /usr/local/psa/admin/plib/DailyMaintainance/script.php >/dev/null 2>&1

While the process is running you can identify which is/are the problematic subscriptions that take the longest:

ps auxwwff | grep vhostmng-find

That will show you the corresponding system user.

You can also use the strace utility to identify which directories take the longest:

strace -p PID-of-vhostmng-find

Hi,

Thank you for the detailed response.
I can't find the daily maintenance command in crontab. Would you know where it's executed? What file shall I look for?

Also would you be able to confirm this is the only job that execute the command? Or is there other way to trigger it?

Regards,

Alban

 

[Sebahat.hadzhi]

On AlmaLinux 8.10, you should be able to find it under /etc/cron.daily/50plesk-daily.
As far as I am aware vhostmng-find is only triggered by the daily maintenance task.

 

[Alban Staehli]

Thx, the topic is actually about vhostmng-content, not find

 

[Sebahat.hadzhi]

Thank you for the update. Apologies for the misunderstanding. Typically, vhostmng-find is the reason for the CPU consumption increase. Nevertheless, vhostmng-content is also part of the Daily maintenance task and the same logic could be followed for it. Just replace vhostmng-find with it in the example commands.