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peter kerin
SAN speed Testing
on Aug 3, 2011 at 11:25:07 pm

Does anyone know of a free linux SAN speed tester? I need one that spawns multiple threads and writes multiple file sizes.

Thanks heaps


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Bob Zelin
Re: SAN speed Testing
on Aug 4, 2011 at 12:30:42 pm

AJA System Test and Blackmagic Disk Speed Test work across AFP and SMB networks.

Industry standard IOMeter only runs on a Windows computer - not a MAC.

If you are smart (and I am not) - dd in Unix works too.

Bob Zelin



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Chris Gordon
Re: SAN speed Testing
on Aug 4, 2011 at 12:37:25 pm

Take a look at iozone (http://www.iozone.org/). It'll take a little bit of reading, but will test IO over any mounted filesystem. You can adjust the number of threads, total file size, write size, etc. iozone doesn't dig down into Fibre Channel or give SAN specific data, so you'd need to watch your SAN and array's tools to correlate everything.

iozone runs on pretty much every platform: Linux (may be shipped by your distro), FreeBSD (it's in ports), Mac OS X (it's in MacPorts).

Good luck. Let me know if you have any questions.


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Bob Zelin
Re: SAN speed Testing
on Aug 4, 2011 at 6:28:28 pm

http://www.iozone.org/

Can you point out where the OS X build is ?

http://www.iozone.org/src/current/



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Chris Gordon
Re: SAN speed Testing
on Aug 4, 2011 at 7:21:20 pm

I install the OS X version through macports (http://www.macports.org/). You walk through installing the Macports system itself (needs Xcode, and has a couple of steps, but is otherwise rather straight forward). Once that is done, you would use ports to install iozone with something like "sudo port install iozone". It builds a single binary and dumps it in /opt/local/bin/iozone by default.

This takes a little bit of work at the command line. I'm happy to give you the compiled binary that you can drop on any box and run without having to go through installing MacPorts, Xcode or any of the other steps. I can build it for 10.6 or 10.7 (don't have anything earlier around). Just let me know if that would be helpful. Just let me know.

Chris


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Ohannis Dikramanjian
Re: SAN speed Testing
on Sep 19, 2011 at 6:23:31 am

Good Morning Chris,
Is it too much trouble if I ask you the for the precompiled version of IOzone?
Thanks

Ohannis Dikramanjian
818-242-4996 x 112
ohannis@nlesystems.com
http://www.nlesystems.com


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Steve Modica
Re: SAN speed Testing
on Aug 8, 2011 at 5:27:38 pm

If you know exactly what you want to test, nothing beats FIO. We support the code on mac platforms in the open source community.

Aja and blackmagic do not use the right APIs for simulating most of the things we care about. iozone and iometer are not detailed enough for me either.

Steve

Steve Modica
CTO, Small Tree Communications


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