Unraid Spinup 1/4th the Speed on Parity H730

[G Speed]

So I'm testing a new server....
Using Version: 6.10.0-rc5 
Here is what's happening...

Drives Spun Down... I click check parity, Drives spin up. I get 50-60MB/s per drive
I Cancel...
I spin drives down.. then I spin drives up
Start parity, I get 200MB/s per drive
Cancel.. Spin Down..
Click Parity... 50-60MB/s

I can replicate this every time

 

Log SHOWS nothing

 

May  3 21:24:47 Tower2 emhttpd: read SMART /dev/sdb
May  3 21:24:48 Tower2 emhttpd: spinning up /dev/sdh
May  3 21:24:52 Tower2 emhttpd: read SMART /dev/sdh
May  3 21:24:52 Tower2 emhttpd: read SMART /dev/sdd
May  3 21:24:53 Tower2 emhttpd: spinning up /dev/sdi
May  3 21:24:57 Tower2 emhttpd: read SMART /dev/sdi
May  3 21:24:58 Tower2 emhttpd: read SMART /dev/sde
May  3 21:24:58 Tower2 emhttpd: spinning up /dev/sdc
May  3 21:25:10 Tower2 emhttpd: read SMART /dev/sdc
May  3 21:25:10 Tower2 emhttpd: read SMART /dev/sdf
May  3 21:25:10 Tower2 emhttpd: read SMART /dev/sdg
May  3 21:25:11 Tower2 emhttpd: read SMART /dev/sdh
May  3 21:25:11 Tower2 emhttpd: read SMART /dev/sdi
May  3 21:25:11 Tower2 emhttpd: read SMART /dev/sdc
May  3 21:25:20 Tower2 kernel: mdcmd (46): check 
May  3 21:25:20 Tower2 kernel: md: recovery thread: check P Q ...
May  3 21:25:27 Tower2 kernel: mdcmd (47): nocheck Cancel
May  3 21:25:27 Tower2 kernel: md: recovery thread: exit status: -4
May  3 21:25:38 Tower2 ntpd[1526]: kernel reports TIME_ERROR: 0x41: Clock Unsynchronized
May  3 21:26:30 Tower2 emhttpd: spinning down /dev/sdh
May  3 21:26:30 Tower2 emhttpd: spinning down /dev/sdg
May  3 21:26:30 Tower2 emhttpd: spinning down /dev/sdd
May  3 21:26:30 Tower2 emhttpd: spinning down /dev/sde
May  3 21:26:30 Tower2 emhttpd: spinning down /dev/sdb
May  3 21:26:30 Tower2 emhttpd: spinning down /dev/sdf
May  3 21:26:30 Tower2 emhttpd: spinning down /dev/sdc
May  3 21:26:30 Tower2 emhttpd: spinning down /dev/sdi

It's a Dell R530, with an H730 set to HBA <- Yes it's a proper IT Mode, full disk pass to OS, Smart Etc...

 

This is when unraid calls for a spinup for parity check
 

 

I will cancel the above.. SPIN DOWN the array.. then SPIN UP.. Start parity check..

Edited May 4, 2022 by G Speed

[G Speed]

Downgraded to 6.9.2 same issue

[Squid]

Have you let the parity check run for a couple of minutes (The snip shows it ran for 7 seconds)?  What you're seeing is basically normal and the speed should be more or less identical after it all levels out and calms down.

[G Speed]

1 hour ago, Squid said:

Have you let the parity check run for a couple of minutes (The snip shows it ran for 7 seconds)?  What you're seeing is basically normal and the speed should be more or less identical after it all levels out and calms down.

I can try sure, but I have never seen this behavior on my other unraid systems

[JorgeB]

IIRC this happened before to someone else, i.e., disks being slower if woke by activity, don't remember if you found if the problem were the disks or the controller.

[G Speed]

6 minutes ago, JorgeB said:

IIRC this happened before to someone else, i.e., disks being slower if woke by activity, don't remember if you found if the problem were the disks or the controller.

This is my concern..... Parity whatever..

 

I can spin up then start.

 

But what's odd is when parity is running, and I pause it.. and wait..

 

All drives are spun up, if I resume.. same slow speed.

 

If I spin down, then up again full speed!

 

Edited May 4, 2022 by G Speed

[JorgeB]

Try testing with the diskspeed docker, it might help identify the issue if it's just one disk/model, unless they are all the same.

[G Speed]

7 minutes ago, JorgeB said:

Try testing with the diskspeed docker, it might help identify the issue if it's just one disk/model, unless they are all the same.

All perfect, did it yesterday...

 

 

[G Speed]

[JorgeB]

That's with the disks spun down before the test?

[Squid]

23 minutes ago, G Speed said:

I can try sure, but I have never seen this behavior on my other unraid systems

I have always seen this, on every server and every OS version/  For the first min it's slow and then gets up to speed.  Doesn't bother me because it always picks up to the max and it's the average time and speed when it's done that's important.

[G Speed]

6 minutes ago, Squid said:

I have always seen this, on every server and every OS version/  For the first min it's slow and then gets up to speed.  Doesn't bother me because it always picks up to the max and it's the average time and speed when it's done that's important.

First minute sure, not 16mins

26mins still same

 

Stop parity, try again same

 

Spin down, spin up

 

 

 

Edited May 4, 2022 by G Speed

[trurl]

Why did you give us a screenshot showing it has run less than a minute? Demonstrate it is still happening after things settle.

 

[G Speed]

10 minutes ago, trurl said:

Why did you give us a screenshot showing it has run less than a minute? Demonstrate it is still happening after things settle.

 

Total size:6 TB

Elapsed time:44 minutes

Current position:525 GB (8.8 %)

Estimated speed:193.1 MB/sec

Estimated finish:7 hours, 53 minutes

Sync errors corrected: 0

Everything is 100% fine when I  spin up drives 

 

Edited May 4, 2022 by G Speed

[trurl]

2 minutes ago, G Speed said:

Total size:6 TB

Elapsed time:44 minutes

Current position:525 GB (8.8 %)

Estimated speed:193.1 MB/sec

Estimated finish:7 hours, 53 minutes

Sync errors corrected: 0

That looks excellent (of course). Can you show us the problem after it has run for a while?

[G Speed]

5 minutes ago, trurl said:

That looks excellent (of course). Can you show us the problem after it has run for a while?

I think you missed the original issue, the above is me spinning up the drives and starting.. it will do the parity scan at full speed "according to the benchmarks" for the full duration.

On the other hand

When unraid starts parity, when disk are spundown

It won't hit over 60MB/s, 1min..40mins.. doesn't matter.. doesn't catch up.. doesn't slow down

Edited May 4, 2022 by G Speed

[trurl]

I understand your description just fine. The (tiny) screenshot in an earlier post seemed to show it being slow after 6 minutes, but the description in that screenshot also talks about pausing. Can you give a screenshot that shows it being slow after it has run continuously for several minutes?

[G Speed]

1 hour ago, G Speed said:

All perfect, did it yesterday...

 

 

 

5 minutes ago, trurl said:

I understand your description just fine. The (tiny) screenshot in an earlier post seemed to show it being slow after 6 minutes, but the description in that screenshot also talks about pausing. Can you give a screenshot that shows it being slow after it has run continuously for several minutes?