NAS4Free Slow SMB/CIFS

[Mr. F]

I recently set up a NAS4free 9.2 system (used this release for ConnectX-2 support) with 6 7200RPM drives in RAIDZ2, 8GB RAM and an i3-4160. I'm seeing very low SMB speeds and I can't figure out why. Intel NICs all around and good switches.

I've tried the common suggestions of turning down the protocol level to NT1, enabling AIO etc. I'm still seeing R/W speeds of around 64/44 on Windows and 60/28 on Linux.

Any suggestions? I don't think the zfs pool is at fault because toying with SMB settings does affect speeds a little bit.

 

[Danic]

My suggestion is verify that network hardware is up to snuff with some iperf tests between nas4free and clients. In the past when I used nas4free found out that their automatic tuning ('Enable tuning of some kernel variables' Option) made performance worse (specifically iSCSI). Lastly, a manual restart of smbd (or system reboot) was needed for changed samba settings to take effect on nas4free. My issue was it said I needed to reboot every time I had config change. For now I use freenas for its iSCSI performance was better without tuning but will switch back to nas4free once it catches up again.

 

[Patrick]

My nas4free box is actually mush snappier than my Synology at this point. I do have an old Samsung 840 Pro caching which helps a lot.

 

[kiteboarder]

I recently set up a NAS4free 9.2 system (used this release for ConnectX-2 support) with 6 7200RPM drives in RAIDZ2, 8GB RAM and an i3-4160. I'm seeing very low SMB speeds and I can't figure out why. Intel NICs all around and good switches.

I've tried the common suggestions of turning down the protocol level to NT1, enabling AIO etc. I'm still seeing R/W speeds of around 64/44 on Windows and 60/28 on Linux.

Any suggestions? I don't think the zfs pool is at fault because toying with SMB settings does affect speeds a little bit.

Did you ever solve your problem? I have the same issue today. I have machines that I can dual boot windows and linux, SSD drives on both ends. Windows-to-Windows has no problem maxing out gigabit ethernet at 110+ MB/s. But when I reboot one machine into linux it can barely hit 65 MB/s. I've tried kubuntu and manjaro, all updated. It's not the hardware...

Thanks in advance for any suggestions.