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Date:      Sat, 31 Mar 2001 11:52:59 -0500 (EST)
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        John Baldwin <jhb@FreeBSD.org>
Cc:        freebsd-alpha@FreeBSD.org
Subject:   RE: do we care about performance yet?
Message-ID:  <15046.2923.571297.353243@grasshopper.cs.duke.edu>
In-Reply-To: <XFMail.010330150120.jhb@FreeBSD.org>
References:  <15044.1867.943183.224703@grasshopper.cs.duke.edu> <XFMail.010330150120.jhb@FreeBSD.org>

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John Baldwin writes:
 > > For the buildworld, the system spent about 40% of its time in kernel.
 > > Roughly 50% of that was in various states of idleness.  I've left full
 > > reports at:
<..>
 > >  Name                                       Count   Pct   Pct
 > >  ----                                       -----   ---   ---
 > >  /boot/kernel/kernel                      1411352        39.3 
 > >    runq_check                              283261  20.1   7.9 
 > >    procrunnable                            268553  19.0   7.5 
 > >    idle_proc                               161822  11.5   4.5 
 > 
 > These 3 are only used when we are sitting idle in the idle proces because there
 > are no runnable proceses.  We can't really optimize these away. :-/

Yes, I realize this.  This is the "Roughly 50% of that was in various
states of idleness" I mentioned above.

Drew

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