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ZFS slow down

Posted: 22 Aug 2015 12:56
by ssjoco
I have an ZFS volume and simple UFS FileShare both of them shared on CIFS/SMB. After some days the ZFS volume read/write speed is limited at 500Kb/s, after a reboot it is working again. I don't have this problem with the UFS share. I tried restart the serviced, no luck.
I have this problem since the NAS4free 10 betas. Now I am upgrading the latest release.
Any idea what cause the slowdown?

Re: ZFS slow down

Posted: 22 Aug 2015 16:30
by b0ssman
tell us about your hardware.

the informations that are required are described in the how to post

viewtopic.php?f=1&t=5

Re: ZFS slow down

Posted: 22 Aug 2015 16:59
by b0ssman

Re: ZFS slow down

Posted: 23 Aug 2015 10:44
by ssjoco
I'm running 10.2.0.2.1778 x64 embedded version on ASRock C70M1 with AMD C-70 APU, 2GB RAM. ZFS with one disk WD-WCAZA3925169.
CPU and RAM usage always minimal.

Re: ZFS slow down

Posted: 09 Sep 2015 09:32
by Parkcomm
One surprising thing is that mem use is minimal - the default for zfs is to use pretty much all the memory for cache. Have you tuned zfs to constrain memory use?