Re: kernel-2.6.14-rc5-rt7 - 604.62 BogoMIPS (2.6.14-rc5 - 6024.43BogoMIPS) problem with bogometer ?

[Steven Rostedt]

On Fri, 2005-10-28 at 16:42 -0700, john stultz wrote:
> On Fri, 2005-10-28 at 18:28 -0500, art wrote:
> > kernel-2.6.14-rc5-rt7 - 604.62 BogoMIPS (2.6.14-rc5 - 6024.43 BogoMIPS) problem with bogometer ?
> > 
> > kernel-2.6.14-rc5-rt7 -- Calibrating delay using timer specific routine.. 604.62 BogoMIPS (lpj=302311)
> > 
> > kernel-2.6.14-rc5 -- Calibrating delay using timer specific routine.. 6024.43 BogoMIPS (lpj=12048877)
> 
> Assuming this is an i386 kernel, in the timeofday patches, the __delay
> function has been converted to be a simple loop based delay instead of
> TSC based, since the TSC has too many potential problems. 
> 
> That should explain a differing lpj value, although 10x smaller is a
> little strange, so I'll dig into this on my system and see if I find
> anything.
> 
> Do let me know if you see any actual changes in behavior (drivers acting
> funny, etc).

John, 

Don't waste any time on this.  This was caused by a brain fart on
Thomas' part :-)  Some legacy code in ktimer_interrupt returned a enum
that was being used to update the ticks.  So before high-res was
activated, the jiffies would be incremented 7 times instead of just
once.  It's already been fixed. Just waiting for Ingo to release his new
patch.

-- Steve


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