Hi,
I have a 3210 single controller system with intermittent latency spikes. The system has 48 x 3 TB disks. We went with ONTAP 8.1 to utilize big aggregates. Two aggregates has been created, one with 16 disk and another with 31 disk. The latency spikes affect volumes from both aggregates (at the same time). It's a CIFS only system running SMB2.

Upgrading to ONTAP 8.1P2 has not resolved the latency spikes on this system, see screenshot from DFM: http://i.imgur.com/TAXvl.png

I have not tried 8.1.1RC1. Disk utilization is not peaking.

I have an open support ticket with NetApp, they want me to capture a perfstat log during the latency spikes. This has proven difficult since the spikes are so intermittent.


Any suggestions on how to track this down are welcome.


Thanks, Marcus


From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of tmac
Sent: den 26 juli 2012 23:00
To: alonz
Cc: toasters@teaparty.net
Subject: Re: Ontap 8.1 performance issue

Looks like 8.1P2 was just released in the last 24 hours..
On Jul 26, 2012 4:47 PM, "Alon Zeltser" <alonz@emet.co.il> wrote:


-------- Original message --------
Subject:RE: Ontap 8.1 performance issue
From:Alon Zeltser <alonz@emet.co.il>
To:"Klise, Steve" <klises@sutterhealth.org>
Cc:



Yes this  include  p1 according to netapp support  this should be fixed at p2 schedule to be released at end of the month  


Sent from Samsung Mobile"Klise, Steve" <klises@sutterhealth.org> wrote:

Was this noticed also on 8.1p1?  Looks like there were some good fixes in the p release.

Thanks in advance.

From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Alon Zeltser
Sent: Thursday, July 26, 2012 11:01 AM
To: toasters@teaparty.net
Subject: Ontap 8.1 performance issue


Hi all
As a netapp ASP I spent quite alot of my time installing netapp's at costumers  site and resolving their issues and I wanted to share  my recent experience with 8.1
Usually I try to avoid RC release but until recently the fas22xx didn't gave us much choice
Once the 8.1 GA released I felt more free to install this release.
 but after I started to get performance complains from my costumers I wasn't so sure
After investigating some of the complains I felt  that they  are justified something is off in system
 I can't put my finger on it but its looks the system don't perform as expected even though the system don't look busy.
After opening support cases at netapp one of the engineers told me that they also gets alot of performance  cases with this release an  even though he can't find a bug that feets with our logs and perfstat he recommend upgrade to 8.1.1rc1
Following his advise after upgrade  I saw major performance improvment I mean throughput went up from 70-80 MB/s to 250-300 MB/s  and latency also went down
The same result occurred on more then one 8.1 system after upgrade to 8.1.1rc1 I saw at least 50% improvment in throughput
 Today on new system I install I completely skip th  GA version an  go straight to 8.1.1rc1
So my advice if you on this release  and suffering from performance and don't know if you have enough disks or the right controller upgrade  first then check




Sent from Samsung Mobile

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