HPE EVA Storage

EVAPERF and %WriteReq and %ReadReq

 
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Mr. Magic
Occasional Advisor

EVAPERF and %WriteReq and %ReadReq

Hello All,

Does anyone know what those 2 results mean for VDG?
6 REPLIES 6
Víctor Cespón
Honored Contributor

Re: EVAPERF and %WriteReq and %ReadReq

Read requests per second and write requests per second.
Mr. Magic
Occasional Advisor

Re: EVAPERF and %WriteReq and %ReadReq

There are followinf fields:
WriteReq - I thought those were WriteReq/s
ReadHitReq
ReadMissReq
%WriteReq - This value is measured in %s so I was interested what that is.
shIVinator.
Valued Contributor

Re: EVAPERF and %WriteReq and %ReadReq

I looked at my system and I don't see those fields (I am using 9.0). I would think that those values would give you the %read and the %write. If you add them up does it equal 100?

Which version are you running?

Regards,
Duane
Amar_Joshi
Honored Contributor
Solution

Re: EVAPERF and %WriteReq and %ReadReq

I believe you are looking under TLVIZ-VDG file. %WriteReq and %ReadReq are percent of IOPS received within that particular diskgroup at that time. Add of these 2 column should come to 100 (sometimes 99.9) This parameters are good to understand the Read/Write ratio which will give you idea about whether the application is read intensive or write intensive.

Mr. Magic
Occasional Advisor

Re: EVAPERF and %WriteReq and %ReadReq

Great, thank you for the answer. You are correct that those numbers were in TLVIZ. And that helps me a lot.
Mr. Magic
Occasional Advisor

Re: EVAPERF and %WriteReq and %ReadReq

I did monitor this for a while and results do not make much sense.
I get sometimes 1000% or more in %WriteReq which completly throws this idea away.