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5 Replies Last post: Nov 3, 2009 3:30 AM by oschistad  

IOMeter testing within the Service Console posted: Aug 19, 2008 7:21 PM

Click to view sames's profile Lurker
sames
1 posts since
Aug 17, 2006

I have started working with IOMeter to measure and tune disk performance on ESX 3.5. I can run IOMeter from within a guest operating system but I can't seem to figure out how to run it from the service console. My intent is to load IOMeter in the service console to test VMFS disk performance for both DAS and iSCSI storage. I tried running Dynamo in the console but failed with this error:

./dynamo: error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

Is there a way to install IOMeter in the console or must I use a guest OS to acomplish this?

Thanks,

Steve

Tags: iometer, iscsi, esx3.5, san, best, practice, benchmarking, vmfs, install

Re: IOMeter testing within the Service Console

1. Aug 19, 2008 8:35 PM in response to: sames
Click to view weinstein5's profile Guru
weinstein5
6,331 posts since
Nov 19, 2005
Welcome to the forums - There appears to be Linux version of iometer - check out http://www.iometer.org/ but I would be leary of running anything in the Service Console -

Re: IOMeter testing within the Service Console

2. Aug 19, 2008 8:55 PM in response to: sames
Click to view vmmeup's profile Expert
vmmeup
454 posts since
May 3, 2006

The question would be why? If you get I/O stats from within the service console it won't give you real data on your i/o ps from inside a running vm. If you are trying to compare two storrage systems I would recommend running iometer from inside vm's located on the datastores. Deploy two identical machines...one to DAS and one to iSCSI and test your performance through the vm. Remeber the VM's have virtualized storage drivers and disks so if you are looking to acheive accurate data you need to account for these as well.

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Re: IOMeter testing within the Service Console

3. Aug 20, 2008 1:13 AM in response to: sames
Click to view depping's profile Champion
depping
2,997 posts since
Jan 17, 2005
I wouldn't install additional software that isn't approved by VMware in the Service Console. And like the others said there really isn't a point for doing that. Use VM's to test the i/o on your lun's!

Duncan
My virtualisation blog:
http://www.yellow-bricks.com

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Re: IOMeter testing within the Service Console

4. Nov 2, 2009 4:19 PM in response to: sames
Click to view ewanat's profile Novice
ewanat
8 posts since
Jul 6, 2007

I installed the RHEL 3 rpm for iometer but for some reason Iometer doesn't work right (wrong results).

check here: http://communities.vmware.com/message/1406694

Re: IOMeter testing within the Service Console

5. Nov 3, 2009 3:30 AM in response to: ewanat
Click to view oschistad's profile Hot Shot
oschistad
126 posts since
Jun 28, 2004
As a previous poster also mentioned, running IOmeter or any other sort of benchmark from inside of the service console will not give you any useful data. Firstly, the SC is actually a virtual machine and has to go through the vmkernel to perform disk IO just like any other VM, and secondly the SC is intentionally limited in how much I/O it is allowed to generate. So if you were to run IOmeter you would see that your benchmark runs from inside the SC was much slower than what you'd see from a regular guest VM.

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