Date: Wed, 06 Jul 2011 17:33:00 +0200 From: "O. Hartmann" <ohartman@zedat.fu-berlin.de> To: arrowdodger <6yearold@gmail.com> Cc: FreeBSD Current <freebsd-current@freebsd.org>, Andriy Gapon <avg@freebsd.org> Subject: Re: Heavy I/O blocks FreeBSD box for several seconds Message-ID: <4E14802C.70907@zedat.fu-berlin.de> In-Reply-To: <CALH631kYhFHQycgVtgnnezCz-SU4d2GfqApDtc_RSb5D%2B9AaSA@mail.gmail.com> References: <4E1421D9.7080808@zedat.fu-berlin.de> <CALH631=F4bSgNDE4w0qcXGMgGxZRRwCP9n-H4M0c%2B1UEaqWr7Q@mail.gmail.com> <4E144913.3060503@FreeBSD.org> <CALH631kYhFHQycgVtgnnezCz-SU4d2GfqApDtc_RSb5D%2B9AaSA@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 07/06/11 14:35, arrowdodger wrote: > On Wed, Jul 6, 2011 at 3:37 PM, Andriy Gapon<avg@freebsd.org> wrote: > >> Just curious what your current value of sysctl kern.sched.preempt_thresh >> is. >> And if it's not 224 and if you haven't tried 224 yet, then could you please >> try >> it and see if there is any improvement? >> >> This assumes that you use SCHED_ULE (kern.sched.name is "ULE"). >> >> -- >> Andriy Gapon >> > > Whoa, it's definitely better! Thanks a lot. But still, when IO causes system > to use swap, X11 became completely unusable. I had tkern.sched.preempt_thresh already set to 96.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4E14802C.70907>