On Wed, 13 May 2020 16:09:57 +0200
Robert Nagy <rob...@openbsd.org> wrote:
> On 13/05/20 17:03 +0300, Paul Irofti wrote:
> > Here is a stress test from robert@:
> >
> > robert@x202:/home/robert> time ./t && time ./t2
> > 0m00.11s real 0m00.12s user 0m00.00s system
> > 0m09.99s real 0m02.64s user 0m03.36s system
> > t is clock_gettime() and t2 is SYS_clock_gettime()
>
> I am in the middle of rebuilding the packages that should gain significant
> speedup right now. That small test does 5 million calls to clock_gettime,
> so it is a bit over-reaching but still it shows the difference.
Well, it's pretty close to a real world desktop system (4mio in 27sec)
root# time btrace calling_clock_gettime.bt
^C@num[chrome]: 2476715
@num[java]: 1429533
@num[Xorg]: 308404
@num[sndiod]: 126398
@num[conky]: 116
@num[sh]: 106
@num[syslogd]: 2
0m27.12s real 0m04.64s user 0m01.89s system
