[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-users] HDD benchmarking



Hi Michael,

Thanks for the reply. I did use LVM's.

So I guess what I should do, is run iostat with the domU's running and check the utilisation, and then shut down all of the domU's and run a benchmark program to see what the HDD's are capable of?

Cheers,

Andrew


On 12/05/2010 12:35 AM, Michael Schmidt wrote:
Hi Andrew,

did you use LVM to provide diskspace to the DomUs, oder file-based-images?
With iostat (mostly included in package named sysstat) you can monitor the IOs and IO utilisation for each block device and partition.
If you need a benchmark to simulate random IOs, i can suggest you the tool sysbench (http://sysbench.sourceforge.net/).

Best Regards

Michael Schmidt

Am 11.05.10 16:07, schrieb Andrew Kilham:
Hi,

I currently have a server with two 15,000rpm SAS drives in RAID 1. I am about to purchase a near identical server as I have run out of RAM and HDD space in my first server, and I am interested in finding out whether I can go for slower HDD's - ie I want to see if the HDD's in my current server are maxed out.

Is there any tool that I can use to benchmark/view the I/O stats of the HDD's, not for a particular domain, but rather for the entire physical server - ie I want to monitoring the physical HDD's instead of a VM's HDD's. Can I do this through dom0? Can anyone tell me the name of a program that can do this (CentOS 64bit)? And finally, is there a way that I can tell the actual max throughput of my HDD's so I can see how close to the limit they currently are?

Cheers,

Andrew

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.819 / Virus Database: 271.1.1/2868 - Release Date: 05/12/10 04:40:00
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users

 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.