[PATCH] Add benchmarking-only mode to the test suite

Tobias Grosser tobias at grosser.es
Tue May 20 08:45:14 PDT 2014


On 20/05/2014 15:54, Yi Kong wrote:
> It's a really strange test case. The spikes disappear when I measure
> cache/TLB misses using perf.

Yes, understanding these performance changes would be very interesting. 
There are big spikes but they seem to appear only under certain 
conditions. I checked with your latest results and just using perf/CPU 
pinning does not seem to remove them. If watching TLP misses fixes them 
that seems to suggest Hal's suggestion may go into the right direct.

As a "solution" could we just add the TLP tracking to the perf command 
we are currently running?

Cheers,
Tobias



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