Hello all  UNITY flash users.

I wanted to check with the user base if anyone else has seen performance issues after going to code 4.3.1.1525703027?

A Dell technical advisory came out that applied to the drives in my Unity 400F, so I upgraded to 4.3.1.1525703027.

The previous code I was running did not have a performance issue code, 4.3.0.1522077968.

Latency immediately jumped on all esxhost datastores after the code update. I do have a SR open 11153806.

on the left of the graph when it was flat was before code update. On the right with the spikes is after the code update.

If you do not have any monitoring tools, the below is also indicated something changed.

No Esxhost disk heart beat timeouts before code update. After code update, Esxhost host disk heart beats now regularly timeout, which  was not happening before the code update.

I was wondering if anyone else is running 4.3.1.1525703027 ? 

Has anyone else see performance issues after upgrading to  4.3.1.1525703027?

I have a single traditional pool configured , which does include the vault drives.

Compression is turned on.

The below graph is from a monitoring product we use.

The key is it really shows the change from before the code update and after the code update finished at around 8:00 am.

I also want to know if anyone is seeing periodic drive queue length spikes?

To the best of my knowledge the drive queue length spike was not caused by a change in work load and it lasted 3-5 min.

I was wondering if an internal process on the unity will cause the below?

The graph is of the first 10 drives in DPE.

All, thank you,