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?
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it will taken offline by the end of march 2021!
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Its not possible for us to export from here and import it to the main forum!
ZFS slow down
- b0ssman
- Forum Moderator

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- Location: Munich, Germany
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Re: ZFS slow down
tell us about your hardware.
the informations that are required are described in the how to post
viewtopic.php?f=1&t=5
the informations that are required are described in the how to post
viewtopic.php?f=1&t=5
Nas4Free 11.1.0.4.4517. Supermicro X10SLL-F, 16gb ECC, i3 4130, IBM M1015 with IT firmware. 4x 3tb WD Red, 4x 2TB Samsung F4, both GEOM AES 256 encrypted.
- b0ssman
- Forum Moderator

- Posts: 2438
- Joined: 14 Feb 2013 08:34
- Location: Munich, Germany
- Status: Offline
Re: ZFS slow down
Nas4Free 11.1.0.4.4517. Supermicro X10SLL-F, 16gb ECC, i3 4130, IBM M1015 with IT firmware. 4x 3tb WD Red, 4x 2TB Samsung F4, both GEOM AES 256 encrypted.
-
ssjoco
- NewUser

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- Joined: 19 May 2015 23:14
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Re: ZFS slow down
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.
CPU and RAM usage always minimal.
- Parkcomm
- Advanced User

- Posts: 384
- Joined: 21 Sep 2012 12:58
- Location: Australia
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Re: ZFS slow down
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?
NAS4Free Embedded 10.2.0.2 - Prester (revision 2003), HP N40L Microserver (AMD Turion) with modified BIOS, ZFS Mirror 4 x WD Red + L2ARC 128M Apple SSD, 10G ECC Ram, Intel 1G CT NIC + inbuilt broadcom