kern/104624: Sound, mouse and keyboard badly interrupted while
I/O (disk, net)
bruce at cran.org.uk
Thu Dec 23 10:32:38 UTC 2010
On Sun, 12 Dec 2010 12:19:23 +0000
Alexander Best <arundel at freebsd.org> wrote:
> On Sun Dec 12 10, Bruce Cran wrote:
> > On Sun, 12 Dec 2010 11:10:11 GMT
> > Alexander Best <arundel at freebsd.org> wrote:
> > > i can confirm that a similar issue exists for me running a very
> > > recent HEAD snapshot on amd64. when the disk is performing heavy
> > > i/o (make -j8 buildworld e.g.) sound starts stuttering and the
> > > system goes semi-responsive. mostly the mouse input (usb) is
> > > lagging, but sometimes the cursor freezes in it's current
> > > position for 10 seconds or so.
> > There was a discussion recently where we noticed this problem
> > appeared to occur mostly on systems with Intel Core 2 Duo CPUs.
> > I've seen a login paused for over 5 seconds (between typing the
> > password and the motd being displayed) due to an "svn up" on my
> > laptop for example.
A good way of triggering this seems to be running sysutils/fio with the
It seems that about half-way through even fio stops doing any IO and
doing an "ls" takes a couple of seconds.
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