ULE/SCHED_SMP diff for 7.0

[Dmitry Morozovsky]

On Thu, 19 Jul 2007, Jeff Roberson wrote:

JR> > JR> >    N           Min           Max        Median           Avg
JR> > JR> > x   5         36.33         36.77         36.45        36.486
JR> > JR> > +   5         38.87         39.23         39.03        39.042
JR> > 
JR> > Well, I'm a bit puzzled: with new sched_ule.c system+user time slightly
JR> > decreases (within one minute), while real time goes up from 39 to 44
JR> > minutes!
JR> > And most of the time I see 10-50% of idle in top.
JR> 
JR> Please try setting sysctl kern.sched.steal_thresh=2  This is the setting I
JR> intend to commit.  I also was only testing buildkernel which tends to run
JR> more processes concurrently as compared to buildworld.

Much better! buildworld+buildkernel finished in 37:23, which is almost 
identical to SCHED_4BSD. user+sys is stable around 64 mins.

Thanks for your hard work!


Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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