topic Re: Performance measuring tools for EVA8000 in Disk Enclosures

Performance measuring tools for EVA8000

Rohit Kassen — Mon, 30 Oct 2006 18:26:37 GMT

Hi We have EVA8000 2c12d , we have currently allocated some vraid5 to Sun solaris 9 servers. Unix folk are complaining that are getting bad i/o , is there an Performance measuring tools that i can use wiht sun and eva's

Re: Performance measuring tools for EVA8000

The Spartan — Tue, 31 Oct 2006 08:30:13 GMT

Hi Rohit,

I did check for EVAperf for aforesaid OS. But did not find any...

Re: Performance measuring tools for EVA8000

avik — Tue, 31 Oct 2006 10:56:05 GMT

You could probably check the portperfshow output, if the switch is a brocade to see the port utilization.

I wondered if you had any vraid from the same diskgroup mounted on any other server and their performance? (The IOPS of a diskgroup is decided by the characteristics and number of disks in the diskgroup)

Also check how busy is the controller thats owning the vraids in question (I am not quite sure how you find out the vraid/lun ownership in eva)

Earlier I had faced similar problems with sun boxes and the fix was an hba driver upgrade.

Re: Performance measuring tools for EVA8000

Mark Poeschl_2 — Tue, 31 Oct 2006 11:17:08 GMT

EVAPerf runs on the management server - NOT the host using the storage. You can certainly use it to collect statistics on your EVA I/O.

I agree with avik though - more than likely this is a host driver / configuration issue.

Re: Performance measuring tools for EVA8000

Rohit Kassen — Tue, 31 Oct 2006 18:50:07 GMT

thnks guys i will try and see what output iam receiving.

REgards

Re: Performance measuring tools for EVA8000

SAKET_5 — Wed, 01 Nov 2006 01:09:16 GMT

I have heard of performance issues on Sun Solaris using MPxIO with EVA8K. Can you confirm if you are using MPxIO or the Veritas package for multipathing?

You could try the following as a starting point for performance measurement:
- You could use Storage Essentials (if you have it) to graph and monitor the controller and FCA port utilisation for the Sun server as well
- You could use Evaperf from the SMA or a storage server and monitor the performance characteristics of the suspected Vdisk in question - correlate your OS level disk device at Solaris end and Vdisk at the EVA end by Vdisk WWID.
- You could also use iostat at the host end to capture performance statistics
- As suggested before, you could also use basic "portperfshow" command on the attached swtich port of the server

Re: Performance measuring tools for EVA8000

Rohit Kassen — Thu, 02 Nov 2006 17:19:03 GMT

We are using MpxIO witht he sun servers, unix guys have indicated that they using latest Sun foundation Suite.

Re: Performance measuring tools for EVA8000

avik — Thu, 02 Nov 2006 18:34:11 GMT

try the forcedirecto option.

http://everythingsolaris.org/articles/ftat/frameset.html