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 Post subject: Re: High IOPS, high bandwith poor performance
PostPosted: Mon Nov 13, 2017 8:56 am 

Joined: Fri Feb 24, 2017 10:44 am
Posts: 7
Finally I find out 3 virtual machines which were making IOPS because of an application problem.

I earn an average of 1500 iops for one exported volume ( a csv for hyperV)

This is the evolution of iops before and after I solved the virtual machine problem
Image

BTW, to help me finding the problem I used the local installed 3parmanagement console, which permits making reports on a specific VV, when the web-base management console doesnt offers this possiblity

result :

on exported VV side : the 3par was running with an average of 5500 iops a day , now : 3000 iops
on physical disks side : before : average of 5600 uiops and now : 5500iops

I wonder why the disk average iops doest really change
5400iops is the max theorical iops my 3par can handle (42 FC disks 1 cpg. 130iops x 42 = 5460iops )

Anyway, situation is now better regarding the 1500-2000 iops I just earned (on exported vv side). Thanks for your help !

Anyone could explain why a FC disk (max 130iops) could be displayed with 250iops in the view statpd ?


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 Post subject: Re: High IOPS, high bandwith poor performance
PostPosted: Mon Nov 13, 2017 9:06 am 
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Joined: Tue Oct 07, 2014 8:34 am
Posts: 124
In the Web GUI it is a bit hidden, but even better. :D

Select the "Exported Volumes Performance"
Left Click on the Graph.
This Open a new Window "Specific Time Data - Exported Volumes Performance"
Select: Top 10 + Total IO/s + LUN ID & Hostname + Daliy + Apply

This Show you the LUN & Server with most IOPS.

To see a Graph per Volume use "Exported Volumes Compare by Performance"


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 Post subject: Re: High IOPS, high bandwith poor performance
PostPosted: Mon Nov 13, 2017 10:05 am 

Joined: Fri Feb 24, 2017 10:44 am
Posts: 7
hidden, and interesting !
I tried, and for a specfic time, I can see quicly the host / VV with more IO. I will re use it for sure.
the old management console does not have this feature

But, I 'm still not able to make a report showing a graphic of the iops evolution for a specific host or a specific VV in a specific time window. Or maybe this option is hidden also :)


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