Been using this config for awhile now without issue and all of the sudden barely getting 20MB/s write speeds (10MB/s on parity and 10MB/s on drive being written to).  Typically during mover or moving large files this would be around 100MB/s.  There have been no hardware changes.  Reboots don't fix the issue either.

tower-diagnostics-20241126-0946.zip

Edited November 26, 20241 yr by jmztaylor

Try without turbo write enabled to see if it's faster, in case it's a disk with slow reads causing the issue.

So it seemed to help a little but still doesn't seem right.  Each drive is writing about 60MB/s.  This being parity and disk 1.  Both of these are on the onboard sata ports.

56 minutes ago, jmztaylor said:

So it seemed to help a little but still doesn't seem right.  Each drive is writing about 60MB/s.

That's about right for non turbo write, if it's slower with turbo write, likely there's a disk with slow reads, run the diskspeed docker tests, both disks and controller.

3 hours ago, JorgeB said:

That's about right for non turbo write, if it's slower with turbo write, likely there's a disk with slow reads, run the diskspeed docker tests, both disks and controller.

This is what it looks like with nothing else accessing the disks.

That looks normal, depending on the location you are writing to, writes can slow down to 50MB/s, if they overlap with the slower section from disk6, still shouldn0t be nowhere near 10MB/s, maybe something else was reading from the array at the time?

6 hours ago, JorgeB said:

That looks normal, depending on the location you are writing to, writes can slow down to 50MB/s, if they overlap with the slower section from disk6, still shouldn0t be nowhere near 10MB/s, maybe something else was reading from the array at the time?

 

Yeah I noticed disk6.  Its an old laptop hard drive and figured it would slow everything down.  So I pulled it.  Rebuilding parity now and its writing at 173MB/s.  So I think that drive might have just been screwing everything up finally and even when not being written to, causing problems.