System process zpool-pool1

[OldManLogan]

Hello,

I am running version 12.2-RELEASE-p10 on an AMD CPU with a 3 Disk zpool named pool1 for my postgres database. I have been noticing some system pauses and when I look at htop I am seeing "zpool-pool1" using a lot of the CPU percentage. I have not been able to figure out what this process is actually doing and was wondering if anyone had some insight into this process or documentation on this.

Thanks

 

[SirDice]

I am running version 12.2-RELEASE-p10

FreeBSD 12.2 has been EoL since March 2022. Please upgrade your system.

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[mer]

I agree with SirDice but in general (simplistically) ZFS groups "writes" into transaction groups and if one creates txgroups that are greater than I/O bandwidth to physical devices, I would expect large CPU usage for that thread.