On Thu, May 07, 2009 at 02:39:06PM +0200, Kristian Nielsen wrote:
> I worked a bit with the perfmon2 library, and got some really good
> results. For micro-benchmarks of smaller pieces of code, I was able to measure
> with about 1 in 10000 accuracy, which is really quite good, and would enable
> to detect automatically something down to like a 0.1% slowdown or so perhaps.
> 
> However, this requires having a test suite of micro-benchmarks, I do not think
> it is possible to get something like sysbench down to that accuracy.

Your micro-benchmark also then needs to resemble reality. I recently was
able to microbenchmark something as much faster, only that in real
world, high concurrency, find out it sucked.

-- 
Stewart "without benchmarks it's lies and the benchmark lies" Smith

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