linux-kernel - Re: [RFC][PATCH 7/7] Adding general performance benchmarking subsystem to perf.

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Message-Id: <20091104.193312.976610524779424707.mitake@dcl.info.waseda.ac.jp>
Date:	Wed, 04 Nov 2009 19:33:12 +0900 (JST)
From:	Hitoshi Mitake <mitake@....info.waseda.ac.jp>
To:	mingo@...e.hu
Cc:	linux-kernel@...r.kernel.org, rusty@...tcorp.com.au,
	tglx@...utronix.de, a.p.zijlstra@...llo.nl, efault@....de,
	acme@...hat.com, fweisbec@...il.com
Subject: Re: [RFC][PATCH 7/7] Adding general performance benchmarking
 subsystem to perf.

From: Ingo Molnar <mingo@...e.hu>
Subject: Re: [RFC][PATCH 7/7] Adding general performance benchmarking subsystem to perf.
Date: Tue, 3 Nov 2009 18:24:07 +0100

> 
> * Hitoshi Mitake <mitake@....info.waseda.ac.jp> wrote:
> 
> > > There will be a handful of more details i'm sure but once there's a 
> > > good base we can commit it - would you / will you be interested in 
> > > extending it further and adding more benchmark modules as well?
> > > 
> > > There's quite a few useful small benchmarks that people are using to 
> > > measure the kernel. Having a good collection of them in one place, 
> > > with standardized options and standardized output would be very 
> > > useful.
> > 
> > Yes, of course! Unified benchmarking utilities will be big help for 
> > Linux users including me.
> > 
> > e.g. I think that copybench (http://code.google.com/p/copybench/) will 
> > be good benchmark for I/O, memory and file system. I'll work on this 
> > after that the patch series I'll send later is merged.
> 
> copybench is listed as 'new BSD license'. Might need the pinging of its 
> author whether he considers it GPLv2 compatible.
> 

Yes. I'll contact the author when I try unifying copybench to perf actually.

> > Do you know any other good candidates to include?
> 
> Frederic suggested dbench - although that's quite large as it includes a 
> complete trace of a benchmark run.
> 
> We might want to do similar measurements to lmbench.
> 
> One nice thing would be to have a 'system call benchmark' set - one that 
> measures _all_ system calls, and could thus be used to find regressions 
> on a 'broad' basis. Syscall usage could be gleaned from the LTP project.
> 

These are good candidates.
Especially system call benchmark is nice idea.
I'll try these after completion of base part.
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