On Fri, 18 Nov 2005, Fernando Lopez-Lezcano wrote:
> > Can it simply be pinned to a cpu?
>
> Is there a way to know in which cpu a process is running? At least Jack
> could ignore timinig issues if the measurement is going to happen in a
> different cpu than the one where the original timestamp was collected.
>
Simple answer? No. At least not meaningfully.
If you do:
cpu = fictitious_get_my_cpu();
if (cpu == last_cpu()) {
rdtsc(oldtime);
...
}
There's no guarantee that jack doesn't switch cpu's from when it found out
what CPU it was on to doing the calculation. So it would be easier to pin
it.
(apt-get schedutils)
man 1 taskset
or if you modify the code:
mn 2 sched_setaffinity
-- Steve
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
