Re: SCHED_ULE should not be the default


On 13/12/2011 09:00, Andrey Chernov wrote:
> 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. 

I'm also seeing problems with ULE on a dual-socket quad-core Xeon 
machine with 16 logical CPUs. If I run "tar xf somefile.tar" and "make 
-j16 buildworld" then logging into another console can take several 
seconds. Sometimes even the "Password:" prompt can take a couple of 
seconds to appear after typing my username.

-- 
Bruce Cran
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