* Kristian Benoit <[email protected]> wrote:
> "plain" run:
>
> Measurements | Vanilla | preemp_rt |
> ---------------+-------------+----------------+
> fork | 93us | 157us (+69%) |
> open/close | 2.3us | 3.7us (+43%) |
> execve | 351us | 446us (+27%) |
> select 500fd | 12.7us | 25.8us (+103%) |
> mmap | 660us | 2867us (+334%) |
> pipe | 7.1us | 11.6us (+63%) |
update: these tests should perform significantly better on the freshly
released -50-37 (or later) PREEMPT_RT kernels. (fork, execve, mmap [*]
was improved in -50-36, the others in -50-37)
Ingo
[*] the extent of the above fork/execve/mmap costs is still unexplained,
unless the test was run with HIGHMEM64 and HIGHPTE enabled.
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