Date: Mon, 1 Mar 2004 12:57:52 -0800
From: cliff white <cliffw@osdl.org>
To: Con Kolivas <kernel@kolivas.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: kernbench v0.30
Message-Id: <20040301125752.5ef9041d.cliffw@osdl.org>
In-Reply-To: <200403011223.31059.kernel@kolivas.org>
References: <200403011223.31059.kernel@kolivas.org>
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On Mon, 1 Mar 2004 12:23:25 +1100
Con Kolivas <kernel@kolivas.org> wrote:

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> Kernbench v0.30
> 
> http://ck.kolivas.org/kernbench/
> 
> Changelog:
> v0.30 Added fast run option which bypasses caching, warmup and tree 
> 	preparation and drops number of runs to 3. Modified half loads to 
> 	detect -j2 and change to -j3. Added syncs. Improved warnings and 
> 	messages. 
> 

STP version updated also, thanks
cliffw
> 
> What is this?
> 
> This is a cpu throughput benchmark originally devised and used by Martin J.
> Bligh. It is designed to compare kernels on the same machine, or to compare
> hardware. To compare hardware you need to be running the same architecture
> machines (eg i386) and run kernbench on the same kernel source tree.
> 
> It runs a kernel at various numbers of concurrent jobs: 1/2 number of cpus, 
> optimal (default is 4xnumber of cpus) and maximal job count. Optionally it can
> also run single threaded. It then prints out a number of useful statistics
> for the average of each group of runs.
> 
> You need at least 2Gb of ram for this to be a true throughput benchmark or 
> else you will get swapstorms.
> 
> Ideally it should be run in single user mode on a non-journalled filesystem.
> To compare results it should always be run in the same kernel tree.
> 
> 
> How do I use it?
> 
> You need a kernel tree (any will do) and the applications 'time' and 'awk' 
> installed. 'time' is different to the builtin time used by BASH and has more
> features desired for this benchmark.
>  
> Simply cd into the kernel tree directory and type
> 
> /path/to/kernbench
> 
> 
> Options
> 
> kernbench [-n runs] [-o jobs] [-s] [-H] [-O] [-M] [-h] [-v]
> n : number of times to perform benchmark (default 5)
> o : number of jobs for optimal run (default 4 * cpu)
> s : perform single threaded runs (default don't)
> H : don't perform half load runs (default do)
> O : don't perform optimal load runs (default do)
> M : don't perform maximal load runs (default do)
> f : fast run
> h : print this help
> v : print version number
> 
> 
> Con
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