Re: simulate load with cycletest

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On Thu, Feb 02, 2017 at 07:53:55AM +0200, Ran Shalit wrote:
> Hello,

Hello Ran-

> I have followed instruction for using cycletest in:
> https://rt.wiki.kernel.org/index.php/Cyclictest
> 
> It described command lines for different scenarios.
> usually one with load and the next without load.
> Yet, I see no difference between the load 100% and no-load commands.
> 
> How can you simulate load with cycletest ?

cyclictest itself doesn't do any loading, it's common to run it with
some other processes in the background which generate a simulated load.

Keep in mind that the using a utility like the ones I've listed below is
only _simulating_ what a load _might_ be like in a real application.
The best thing to do is to actually test your application.

   - hackbench - scheduling load (nice because it's part of rt-tests)
   - stress - load-generating swiss-army knife
   - xfstests - disk / filesystem load
   - 'make -j' in a kernel source tree
   - iperf - network load
   - glxgears - gfx load

(those are the ones that come to mind, there are others I'm forgetting)

  Julia
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