Am 2023-09-15 13:40, schrieb George Michaelson:
Not wanting to hijack threads I am interested if any of this can translate back up tree and make Linux ZFS faster.And, if there are simple sysctl tuning worth trying in large (tb) memory model pre 14 FreeBSD systems with slow zfs. Older freebsd alas.
The current part of the discussion is not really about ZFS (I use a lot of nullfs on top of ZFS). So no to the first part.
The tuning I did (maxvnodes) doesn't really depend on the FreeBSD version, but on the number of files touched/contained in the FS. The only other change I made is updating the OS itself, so this part doesn't apply to pre 14 systems.
If you think your ZFS (with a large ARC) is slow, you need to review your primary cache settings per dataset, check the arcstats, and maybe think about a 2nd level arc on fast storage (cache device on nvm or ssd). IF you have a read-once workload, nothing of this will help. So all depends on your workload.
Bye, Alexander. -- http://www.Leidinger.net alexan...@leidinger.net: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org netch...@freebsd.org : PGP 0x8F31830F9F2772BF
signature.asc
Description: OpenPGP digital signature
