Mailing List Archive: Netapp: toasters

R: High CPU utilizations and file I/O

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G.Milazzo at sinergy

Oct 1, 2009, 8:58 AM

Post #1 of 3 (445 views)
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R: High CPU utilizations and file I/O

Thanks for info, for now.
I've discovered a tool I didn't know. LogicMonitor seems really a good tool.

Together with Operation Manager I remember that also DFM could do the job. Right? So, nothing free (execpt CLI and lot of values to read on the putty log!! :))

Is there somebody that remember if the new System Manager can help? I remember that there's some 'stats&perf" area...

Regards,

Da: Steve Francis [mailto:sfrancis[at]logicmonitor.com]
Inviato: giovedė 1 ottobre 2009 17.50
A: Milazzo Giacomo
Cc: toasters[at]mathworks.com
Oggetto: Re: High CPU utilizations and file I/O

Not sure if by 'tool' you meant commercial product, but LogicMonitor certainly does that.
It will discover all the volumes, and which aggregate they are on, and construct graphs for each aggregate showing IO operations of each volume (as well as detailed volume graphs showing read, write and other operations/sec, and throughput, and latency values per volume.)
Plus a lot of other NetApp alerting and monitoring (space/inode per volume, shelf electronics, spare drives, autosupport success, individual CPU stats, physical disk utilization, etc).

Let me know if you want more information.

Milazzo Giacomo wrote:
Hi all,

From some days the CPU of a 3020C reaches 100% slowing down all processes.
Maybe some area of a 3020HA is stressed on I/O.

There's a VMware on NFS farm using both servers and VDI also! The customer states that in the NFS volume for VMware there's an high activity of continous destruction and building of VMware vdisk...

Is there some tool that can let me understand which volume is under stress and in case move it on the other head?
Or maybe this filer is undersized for the job that has been asked...

Regards,

Dott. Giacomo Milazzo
[cid:image001.jpg[at]01CA42C0.D43BE6D0]
Technical Account Manager
Sinergy SpA
Filiale di Roma
* 00148. viale Castello della Magliana, 38
' (+39) 3406001045 0665970252
7 +39 02 26922048
* Giacomo.Milazzo[at]Sinergy.it<mailto:Giacomo.Milazzo[at]Sinergy.it>

--
Steve Francis

LogicMonitor LLC

sfrancis[at]logicmonitor.com<mailto:sfrancis[at]logicmonitor.com>
www.logicmonitor.com<http://www.logicmonitor.com>

Ph: 1 888 41 LOGIC x500
Ph: 1 805 698 0770

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G.Milazzo at sinergy

Oct 1, 2009, 10:06 AM

Post #2 of 3 (403 views)
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R: High CPU utilizations and file I/O [In reply to]

Good question!
I'll investigate

Da: Jeff Mohler [mailto:speedtoys.racing[at]gmail.com]
Inviato: giovedė 1 ottobre 2009 19.04
A: Milazzo Giacomo
Cc: toasters[at]mathworks.com
Oggetto: Re: High CPU utilizations and file I/O

Let me ask one question.

Are the VMDK's aligned?

If Yes, continue with volume stats.

If No, stop everything, there's your problem, no way around it.

On Thu, Oct 1, 2009 at 8:28 AM, Milazzo Giacomo <G.Milazzo[at]sinergy.it<mailto:G.Milazzo[at]sinergy.it>> wrote:

Hi all,

From some days the CPU of a 3020C reaches 100% slowing down all processes.

Maybe some area of a 3020HA is stressed on I/O.

There's a VMware on NFS farm using both servers and VDI also! The customer states that in the NFS volume for VMware there's an high activity of continous destruction and building of VMware vdisk...

Is there some tool that can let me understand which volume is under stress and in case move it on the other head?

Or maybe this filer is undersized for the job that has been asked...

Regards,

Dott. Giacomo Milazzo

[cid:image001.jpg[at]01CA42CA.38199C70]

Technical Account Manager

Sinergy SpA
Filiale di Roma
* 00148. viale Castello della Magliana, 38

' (+39) 3406001045 0665970252

7 +39 02 26922048
* Giacomo.Milazzo[at]Sinergy.it

--
No Signature Required
Save The Bits, Save The World!

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G.Milazzo at sinergy

Oct 2, 2009, 1:00 AM

Post #3 of 3 (392 views)
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R: High CPU utilizations and file I/O [In reply to]

It's a great thing to see that a "simple" question on a common issue could push so many answers!
Great community this one!

Thanks,

Da: Maxwell Reid [mailto:max.reid[at]saikonetworks.com]
Inviato: venerdė 2 ottobre 2009 7.17
A: Romeo Theriault
Cc: Milazzo Giacomo; toasters[at]mathworks.com
Oggetto: Re: High CPU utilizations and file I/O

Hi Romeo,

I think everyone would be interested in the updated version!

~Max

On Oct 1, 2009, at 8:54 PM, Romeo Theriault wrote:

Is there some tool that can let me understand which volume is under stress and in case move it on the other head?

I wrote a tool called "topvol" a while ago that does just this. You can find it here:

http://communities.netapp.com/docs/DOC-1262

I also have an updated version that allows you to filter on aggregate too, if you'd be interested.

--
Romeo Theriault
System Administrator
Information Technology Services

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