Re: New SCHED_SMP diff.

From: Thomas Sparrevohn <Thomas.Sparrevohn_at_btinternet.com>
Date: Thu, 5 Jul 2007 00:16:53 +0100
On Tuesday 03 July 2007 07:22:00 Jeff Roberson wrote:

> 
> Hey Thomas, sorry for the bug, can you try the scheduler at:
> 
> http://people.freebsd.org/~jeff/sched_smp.c
> 

Hi Jeff

Using sysctl kern.sched.steal_busy=1 did not change the picture 


1267.20 real      2492.14 user       956.64 sys
   
   2374102  voluntary context switches
    877692  involuntary context switches

1269.38 real      2497.00 user       962.15 sys

   2439504  voluntary context switches
    889964  involuntary context switches


The system seems to be a lot more "idle" than I normally see - but I don't have 
a reliable way of measuring the idle time - e.g. I guess I could try with vmstat
but I an not sure its accurate
Received on Wed Jul 04 2007 - 21:16:57 UTC

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