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SubjectRe: Differences between FreeBSD and Linux system call mechanism
Date
> > lmbench is your friend. Im sure Larry McVoy can provide
>
> LMBench is a set of microbenchmarks that aren't very predictive of
> real-world load characteristics. The best predictor of real-world
> load characteristics is previous measurements in the real-world
> under identical load (ie: if it too 500 cycles yesterday, it will
> take 500 cycles today).

lmbench gives very precise accurate performance figures for the things
it benches - in this case things like null syscall and the affects of
the kernel cache footprint.

When you are discussing syscall timing its syscall timing microbenchmark
is not suprisingly very accurate


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