Hi i'm new here.

I'm setting up a new unraid nas and i'm experiencing slow transfer speed.

 

My config is (at the moment)

CPU: n3700

8gb of ddr3 ram

WD RED 14tb (as parity)

WD RED 12tb

 

I'm actually using zfs for my arrey and I don't have any cache disk (I'm waiting for a new mobo and NVME disks).

Should I revert back to xfs?

 

Transfer speed goes from 100/110 to 0mb/s and back, avarageing around 50 mb/s for big files

Talking af smaller files (photos), it is 30/15mb/s

https://docs.unraid.net/unraid-os/manual/storage-management/#array-write-modes

Do you have just one data disk in the array? That should work as a mirror so write mode doesn't matter. 

Yes, just a 12tb disk and a 14tb parity disk

As an example, if I move my photos to an OpenMediaVault Raspberry PI connected to an external 2.5" drive, i get 65/35mb/s

With parity completely removed, on unRaid i get considerably slower results 35mb/s (no dockers and no vms)

It's a known issue:

 

https://forums.unraid.net/bug-reports/prereleases/zfs-write-speed-issue-array-disk-no-parity-on-6120-rc6-r2414/

 

Note that only the array is affected, not pools.

Formatted in xfs and tried to exclude network problems installing Krusader and transfering files from a 5tb external disk  and the internal 12tb drive.

The result is 50/60mb/s without parity (no parity disk assigned).

Maybe is a bottelneck of my N3700? I will replace it with this N100 NAS board in about a month.

Don't know what to do

41 minutes ago, Armisael81 said:

Maybe is a bottelneck of my N3700?

Should be capable of more than that, are you using encryption? You can also post the diagnostics during a transfer in case there's something visible there.

No encryption 😕

How can I export my diagnostics?

Here you go.

sacha-unnas-diagnostics-20240126-1136.zip

Nothing obvious with the disk, do see some possible NIC issues, unless you were messing with it:

 

Jan 26 08:30:10 Sacha-UnNAS kernel: r8169 0000:03:00.0 eth0: Link is Down
Jan 26 08:30:13 Sacha-UnNAS kernel: r8169 0000:03:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx
Jan 26 08:32:24 Sacha-UnNAS kernel: r8169 0000:03:00.0 eth0: Link is Down
Jan 26 08:32:27 Sacha-UnNAS kernel: r8169 0000:03:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx

 

Are you transferring over LAN?

Just using Krusader to copy files from an external disk to the internal one (the benchmark i was talking about... 50/60mb/s max)

Taking a look at the cpu load, usually is around 50% on all 4 cores.

Sometimes it goes up to 80% and i've seen 90% on one single core.

Try copying from one SATA disk to another just to rule out USB issues.

Ok, thanks for the hint. I'll be back in a couple of hours

Even worst

12mb/s

12tb (XFS the one in my arrey)

14tb disk (NTFS not in the arrey but connected through sata connector)

sacha-unnas-diagnostics-20240126-1634.zip

And this is the diagnostic file of uploading photos from my pc to the nas...

avarage speed 15MB/s

I think those numbers are not OK at all...

I'm not even using parity drive or VMs or any docker besides Krusader (kn the first test)

sacha-unnas-diagnostics-20240126-1646.zip

That's very strange, for the upload test were you also using Krusader with a mapped shared or was it done using Windows?

I used krusader only for the first test, the one from the 12tb to the 14tb disk

I'm sorry, no more ideas, if you can try booting Unraid in a different PC with just a single disk connected and retest.

I don't know but is completely unusable for me.

I uploaded through krusader 3tb of photos and videos. Now it takes 10s only to open a folder. If I try to download a single photo, il takes ages just to start the download. I'm about to giveup

On my amd 5600g system Is ok.

110mb\s even with small files.

So the problema should be the n3700 CPU I suppose

10 hours ago, Armisael81 said:

So the problema should be the n3700 CPU I suppose

I guess so, but there are other users using similar CPUs with much better performance, so there may be an issue with the board/CPU.

Did you guys check the permission, ownership and group? In my case, unbalance worked in awful speed, like 200kb/s, but it got rid off after run new permissions tool.
I hope that experience is valuable.