After recently adding another SSD to my cache pool and turning on SSL/HTTPS for the webgui, my read and write speeds dropped dramatically. I do not think it is directly tied to either of those modifications, but after multiple reboots something is just not right anymore. I am getting 2MB reads and 7-8MB write speeds on my array shares. I have re-seated all connections to the drive as I thought I might of knocked one a little loose or something. Not sure what to look into next.  Any help is appreciated.

diagnostics-20190807-0211.zip

Parity

Serial Number:    W1H40H6Y
ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
184 End-to-End_Error        -O--CK   099   099   099    NOW  1

 

I will replace the failing parity drive. I can see how that would kill my writes, but a failing parity causes poor reads also?

1 minute ago, mediamadman said:

failing parity causes poor reads also?

No

Do those diagnostics include the time you were experiencing the poor reads? Syslog isn't very long and I didn't see any I/O problems in it.

Probably not. I will post a new one after the drive replacement.

I know it is still doing its rebuild, but this is pretty typical of the read speeds I have been seeing and I also do not see any I/O issues in the logs.

 

diagnostics-20190807-0301.zip

If you have a rebuild running then I would EXPECT any copying speeds to be terrible!

9 hours ago, itimpi said:

If you have a rebuild running then I would EXPECT any copying speeds to be terrible!

And the rebuild speed will also be affected by the copying. Wait for rebuild to complete before doing any more testing.

Looks like the replacement drive I used that was laying around is another old bad drive. I have a new drive being delivered today, so I will throw that one in and see where I am at after that rebuilds.

After the replacement/rebuild my speeds are back up to normal. Thanks for the quick help trurl.