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I found this<br>
<font face="Courier 10 Pitch">[ 0.028097] smpboot: Total of 1
processors activated (4790.76 BogoMIPS)<br>
</font><br>
Then I removed noapic and nolapic and rebooted. This time I found<br>
<br>
<font face="Courier 10 Pitch">[ 0.185214] smpboot: Total of 2
processors activated (9582.88 BogoMIPS)</font><br>
<br>
I just added lapic and rebooted. I found <br>
<br>
<font face="Courier 10 Pitch">[ 0.145254] smpboot: Total of 2
processors activated (9583.44 BogoMIPS)</font><br>
<br>
So it looks like I only had one core available. I'll leave the
machine as it is for now and see if it behaves itself or starts
locking up again. Of course any suggestions you or anyone else has
will be appreciated. Another good reason to leave it as it is for
now is that it's 0200 MST and I'm going to bed.<br>
<br>
Thanks for your reply.<br>
<br>
Derek<br>
<br>
<div class="moz-cite-prefix">On 08/13/2013 10:46 PM, Carruth, Rusty
wrote:<br>
</div>
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<title>RE: fix lockup issue left with one core</title>
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<p><font size="2">Does it show one or two CPUs at bogomips 4790?<br>
<br>
I notice on my mint system, in dmesg:<br>
<br>
[ 0.180737] Brought up 2 CPUs<br>
[ 0.180739] smpboot: Total of 2 processors activated
(12801.34 BogoMIPS)<br>
<br>
So do you see 2 or 1 there in your version? (Assuming you get
a similar message)<br>
<br>
<br>
-----Original Message-----<br>
From: <a class="moz-txt-link-abbreviated"
href="mailto:plug-discuss-bounces@lists.phxlinux.org">plug-discuss-bounces@lists.phxlinux.org</a>
on behalf of Derek Trotter<br>
Sent: Tue 8/13/2013 8:13 PM<br>
To: Main PLUG discussion list<br>
Subject: Re: fix lockup issue left with one core<br>
<br>
Update. I tried encoding that video again, but without the
noapic and<br>
nolapic options. Handbrake was encoding the video at between
35 and 40<br>
frames per second. When I rebooted and tried again with the
noapic and<br>
noalpic options enabled, Handbrake was encoding the same video
with the<br>
same settings at 17 to 20 frames a second. So is this
something unique<br>
to Handbrake or is there something else going on?<br>
<br>
Derek<br>
<br>
First I checked /proc/cpuinfo which had 4790.8 as the value
for bogomips<br>
with noapic and nolapic in the grub2 config. I removed these
options<br>
and rebooted. This time I got 4791.43. So I'm guessing
that if I<br>
lost anything, it's not enough to matter. Am I right?<br>
<br>
Thanks<br>
<br>
On 08/13/2013 02:56 PM, Carruth, Rusty wrote:<br>
><br>
> Compare the bogomips of the dual-core boot and the
single-core boot.<br>
><br>
> Â<br>
><br>
> If the bogomips of the single-core is 2x the bogo of the
dual<br>
> core, then you’ve not lost anything – you are simply
letting Linux<br>
> control the sharing of the CPU instead of the CPU.<br>
><br>
> Â<br>
><br>
> (at least for the stupid hyperthreading stuff, all
hyperthreading did<br>
> was give you two CPUs running at half the clock speed of
the CPU… <br>
> Helped Windows users since Windows did such a bad job of
time slicing<br>
> on a single CPU…)<br>
><br>
> Â<br>
><br>
> Â<br>
><br>
> *From:*plug-discuss-bounces@lists.phxlinux.org<br>
> [<a moz-do-not-send="true"
href="mailto:plug-discuss-bounces@lists.phxlinux.org">mailto:plug-discuss-bounces@lists.phxlinux.org</a>]
*On Behalf Of *Derek<br>
> Trotter<br>
> *Sent:* Tuesday, August 13, 2013 2:53 PM<br>
> *To:* Main PLUG discussion list<br>
> *Subject:* fix lockup issue left with one core<br>
><br>
> Â<br>
><br>
> So far this beast has behaved itself for 3 days. Today I
handbrake on<br>
> a tv show episode I have on dvd. It's a 30 minute show
and Handbrake<br>
> normally takes about 20 minutes to encode a 30 minute
show. This<br>
> time I noticed the estimation of how long it would take
hovered around<br>
> 45 minutes. I then opened top and pressed 1 once it
started. It<br>
> showed only cpu0. Shouldn't cpu1 also be there? I
looked around<br>
> online and found that using the noapic option in grub
only allows one<br>
> core of a multi core processor to run. Is there any way
to enable<br>
> apic and lapic if necessary without it causing my machine
to lock up<br>
> again?<br>
><br>
> Thanks<br>
><br>
> --<br>
> "I get my copy of the daily paper, look at the obituaries
page, and if I’m not there, I carry on as usual."<br>
> Â<br>
> Patrick Moore<br>
><br>
><br>
> ---------------------------------------------------<br>
> PLUG-discuss mailing list
-PLUG-discuss@lists.phxlinux.org<br>
> To subscribe, unsubscribe, or to change your mail
settings:<br>
> <a moz-do-not-send="true"
href="http://lists.phxlinux.org/mailman/listinfo/plug-discuss">http://lists.phxlinux.org/mailman/listinfo/plug-discuss</a><br>
<br>
--<br>
"I get my copy of the daily paper, look at the obituaries
page, and if I’m not there, I carry on as usual."<br>
<br>
Patrick Moore<br>
<br>
<br>
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<br>
<pre class="moz-signature" cols="72">--
"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</pre>
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