Re: [PATCH] 2.6, 2.4, Nforce2, Experimental idle halt workaroundinstead of apic ack delay.

[Prakash K. Cheemplavam]

Ross Dickson wrote:
> On Saturday 14 February 2004 00:41, Ross Dickson wrote:
>
> > On Friday 13 February 2004 21:17, Prakash K. Cheemplavam wrote:
> >
> > > Hi,
> > >
> > > I am just testing this patch with latest 2.6.3-rc2-mm1. It works in that 
> > > sense, that my machine doesn't lock up of APIC issue. (If it locks up - 
> > > hasn't done yet - then because of something else, I am currently 
> > > discssing it in another thread...)
> > >
> > > But it doesn't work in the sense of cooling my machine down. Though 
> > > athcool reports disconnect is activated it behaves like it is not, ie, 
> > > turning disconnect off makes no difference in temperatures. Your old 
> > > tack patch in conjunction with 2.6.2-rc1 (linus) works like a charm, ie 
> > > no lock-ups and less temp.
> >
> > Thanks Prakash for testing it and spotting thermal problem.
> >
> > Here are some temperatures from my machine read from the bios on reboot.
> > I gave it minimal activity for the minutes prior to reboot.
> >
> > Win98, 47C
> > XPHome, 42C
> > Patched Linux 2.4.24 (1000Hz), 40C
> > Patched Linux 2.6.3-rc1-mm1, 53C  OUCH!
> >
> > Sorry, I will have to go through my latest patch and see why the temp differs
> > so much between 2.4 and 2.6. I currently use patched 2.4.24 with Suse 8.2 for
> > convenience. When it stopped the lockups on 2.6 I thought the 2.6 was
> > working the same way. 
>
>
> Found the problem for 2.6
>
> After fixing it the 2.6 temperature is
> Patched Linux 2.6.3-rc1-mm1, 38C
> Ambient today is 1C cooler also.

Well, I hate to say it, but it seems, it doesn't work, or at least not 
so well, (running hot, but stability seems to be there) with 2.6.3-mm2. 
Like I had 52°C mostly idle with your patch and APIC just a few moments 
ago. Now back to PIC within a few minutes I am back to 45°C...7°C is too 
much of a difference for me.

To be honest, I can't remenber how it was with the older kernel and I 
haven't tested temp of apic_tack patch with 2.6.3-mm2, but for the 
moment I am back to PIC. (My CPU is running at 11x200MHz, 1,7vcore btw.)

Cheers,

Prakash
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