fix lockup issue left with one core

[Derek Trotter]

First I checked /proc/cpuinfo which had 4790.8 as the value for bogomips 
with noapic and nolapic in the grub2 config.  I removed these options 
and rebooted.  This time I got 4791.43.  So I'm guessing that if I lost 
anything, it's not enough to matter.  Am I right?

Thanks

On 08/13/2013 02:56 PM, Carruth, Rusty wrote:
>
> Compare the bogomips of the dual-core boot and the single-core boot.
>
> If the bogomips of the single-core is 2x the bogo of the dual core, 
> then you’ve not lost anything – you are simply letting Linux control 
> the sharing of the CPU instead of the CPU.
>
> (at least for the stupid hyperthreading stuff, all hyperthreading did 
> was give you two CPUs running at half the clock speed of the CPU…  
> Helped Windows users since Windows did such a bad job of time slicing 
> on a single CPU…)
>
> *From:*plug-discuss-bounces at lists.phxlinux.org 
> [mailto:plug-discuss-bounces at lists.phxlinux.org] *On Behalf Of *Derek 
> Trotter
> *Sent:* Tuesday, August 13, 2013 2:53 PM
> *To:* Main PLUG discussion list
> *Subject:* fix lockup issue left with one core
>
> So far this beast has behaved itself for 3 days. Today I handbrake on 
> a tv show episode I have on dvd.  It's a 30 minute show and Handbrake 
> normally takes about 20 minutes to encode a 30 minute show.  This time 
> I noticed the estimation of how long it would take hovered around 45 
> minutes.  I then opened top and pressed 1 once it started. It showed 
> only cpu0.  Shouldn't cpu1 also be there?  I looked around online and 
> found that using the noapic option in grub only allows one core of a 
> multi core processor to run.  Is there any way to enable apic and 
> lapic if necessary without it causing my machine to lock up again?
>
> Thanks
>
> -- 
> "I get my copy of the daily paper, look at the obituaries page, and if I’m not there, I carry on as usual."
>   
> Patrick Moore
>
>
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-- 
"I get my copy of the daily paper, look at the obituaries page, and if I’m not there, I carry on as usual."

Patrick Moore

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