Re: [HPDD-discuss] Good stress testing for lustre
Getting one of your power users to run a high load 'real world' job is
something we do (in addition to the normal sets of benchmark tools). It
can expose more than just filesystem related weaknesses. Kill Infiniband
gateways or FDR to QDR rate drops is some of the things we have seen
during lustre testing. Using real jobs, from real users has shown us
alot more than what iozone and dd did.
On Tue, Jan 21, 2014 at 11:16 AM, White, Cliff <cliff.white(a)intel.com>wrote:
From: "E.S. Rosenberg"
<esr+hpdd-discuss(a)mail.hebrew.edu<mailto:
esr+hpdd-discuss(a)mail.hebrew.edu>>
Date: Tuesday, January 21, 2014 at 6:30 AM
To: "hpdd-discuss@lists.01.org<mailto:hpdd-discuss@lists.01.org>" <
hpdd-discuss@lists.01.org<mailto:hpdd-discuss@lists.01.org>>
Subject: [HPDD-discuss] Good stress testing for lustre
Hi all,
Is there any good stress testing software for lustre?
Right now I am just using dd on the clients and seeing how much throughput
I am getting but I was hoping there is maybe something a bit better...
Thanks,
Eli
Iozone has a multi-client option which makes a good stress test. To
really exercise the filesystem, you need a tool which can spawn load on
multiple clients.
IOR is quite good for this. If you are after stress rather than
performance, simply spawning as much random work as you possibly can is
also good.
cliffw
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