Re: generating 100% load for cyclictest ?

[Luotao Fu <l.fu@pengutronix.de>]

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Hi,

On Thu, Jan 11, 2007 at 03:56:09PM +0100, Steven Scholz wrote:
> Hi,
> 
> on http://rt.wiki.kernel.org/index.php/Cyclictest some test cases mention a
> "100% load".
> 
> How is this load created? Any recommendations?
> 
> I am testing on an embedded system with a small rootfs. So I don't have a
> gcc running on the target that could compile the kernel or something ...

Even Without extra softwares you can easily produce custom load in 
many manners. i.E. you can cause a high CPU consumption by simple doing
cat /dev/zero >/dev/null
or you can grab another machine in the network to do some flood pings
towards the emb. system, which will cause high frequented irqs on the
network device.
If you just want to give your machine some custom load, this should be
enough. If you want to analyze the system in some specific load
situation, you might want to take some benchmarking tools. Hackbench is
i.E. a good start.

cheers
Luotao Fu
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