kern/104624: Sound,
mouse and keyboard badly interrupted while I/O (disk, net)
Alexander Best
arundel at freebsd.org
Fri Dec 24 11:27:40 UTC 2010
On Thu Dec 23 10, Bruce Cran wrote:
> On Thu, 23 Dec 2010 18:37:20 +0000
> Alexander Best <arundel at freebsd.org> wrote:
>
> > is this output right at the beginning normal?
> >
> > fio: this platform does not support process shared mutexes, forcing
> > use of threads. Use the 'thread' option to get rid of this warning.
> > f1: (g=0): rw=write, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1 ...
> > f1: (g=0): rw=write, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
> > fio: this platform does not support process shared mutexes, forcing
> > use of threads. Use the 'thread' option to get rid of this warning.
> > f2: (g=1): rw=randwrite, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1 ...
> > f2: (g=1): rw=randwrite, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
> > fio: this platform does not support process shared mutexes, forcing
> > use of threads. Use the 'thread' option to get rid of this warning.
> > f3: (g=2): rw=read, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1 ...
> > f3: (g=2): rw=read, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
> > fio: this platform does not support process shared mutexes, forcing
> > use of threads. Use the 'thread' option to get rid of this warning.
> > f4: (g=3): rw=randread, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1 ...
> > f4: (g=3): rw=randread, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
> > Starting 12 threads and 4 processes
>
> Yes - it just means that FreeBSD doesn't support pshared mutexes. You
> can add "thread" to the job file to stop the warning.
thanks for the hint. have you verified that this behavior only occurs on
systems with a dual core cpu? is it possible to disable one core and see
if the behavior is also reproducable then? i'd like to test this, but i don't
know the magic juju to disable one of my cpu cores. :(
cheers.
alex
>
> --
> Bruce Cran
--
a13x
More information about the freebsd-bugs
mailing list