On Tue, Dec 13, 2011 at 02:22:48AM -0800, Adrian Chadd wrote: > On 13 December 2011 01:00, Andrey Chernov <ache_at_freebsd.org> wrote: > > >> If the algorithm ULE does not contain problems - it means the problem > >> has Core2Duo, or in a piece of code that uses the ULE scheduler. > > > > I observe ULE interactivity slowness even on single core machine (Pentium > > 4) in very visible places, like 'ps ax' output stucks in the middle by ~1 > > second. When I switch back to SHED_4BSD, all slowness is gone. > > Are you able to provide KTR traces of the scheduler results? Something > that can be fed to schedgraph? Sorry, this machine is not mine anymore. I try SCHED_ULE on Core 2 Duo instead and don't notice this effect, but it is overall pretty fast comparing to that Pentium 4. -- http://ache.vniz.net/Received on Wed Dec 14 2011 - 16:34:38 UTC
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