On Tue, 23 Oct 2012, Srivatsa Bhat wrote:
> Ah, that's the thing.. CPU hotplug does not always refer to
> "physically pull out or plug in CPUs into the system". As you might
> have gathered from reading the help text, it also refers to "soft"
> offline/online of CPUs. As a result, CPU hotplug is u
On Tue, Oct 23, 2012 at 2:12 PM, Robert P. J. Day wrote:
> On Tue, 23 Oct 2012, Srivatsa Bhat wrote:
>
>> I don't think we should worry too much about this.. I can think of a
>> simple reason why one would want to iterate through all possible
>> CPUs.. : IIUC, this function prints, for each softir
On Tue, Oct 23, 2012 at 2:04 PM, Robert P. J. Day wrote:
> On Tue, 23 Oct 2012, Srivatsa Bhat wrote:
>
>> Hi,
>>
>> On Tue, Oct 23, 2012 at 12:43 AM, Robert P. J. Day
>> wrote:
>> > On Mon, 22 Oct 2012, Srivatsa Bhat wrote:
>> >
>> >> Hi,
>> >>
>> >> You might want to take a look at Documentation
On Tue, 23 Oct 2012, Srivatsa Bhat wrote:
> I don't think we should worry too much about this.. I can think of a
> simple reason why one would want to iterate through all possible
> CPUs.. : IIUC, this function prints, for each softirq, the number of
> times it ran on a particular CPU. So if a CPU
On Tue, 23 Oct 2012, Srivatsa Bhat wrote:
> Hi,
>
> On Tue, Oct 23, 2012 at 12:43 AM, Robert P. J. Day
> wrote:
> > On Mon, 22 Oct 2012, Srivatsa Bhat wrote:
> >
> >> Hi,
> >>
> >> You might want to take a look at Documentation/cpu-hotplug.txt for
> >> some details regarding online/possible CPUs.
Hi,
On Tue, Oct 23, 2012 at 3:03 AM, Robert P. J. Day wrote:
> On Mon, 22 Oct 2012, Srivatsa Bhat wrote:
>
>> Hi,
>>
>> You might want to take a look at Documentation/cpu-hotplug.txt for
>> some details regarding online/possible CPUs...
>
> i'll do one more post on this, even though i never ima
Hi,
On Tue, Oct 23, 2012 at 12:43 AM, Robert P. J. Day
wrote:
> On Mon, 22 Oct 2012, Srivatsa Bhat wrote:
>
>> Hi,
>>
>> You might want to take a look at Documentation/cpu-hotplug.txt for
>> some details regarding online/possible CPUs...
>
> ah, quite so, although that file is definitely out of
On Mon, 22 Oct 2012, Srivatsa Bhat wrote:
> Hi,
>
> You might want to take a look at Documentation/cpu-hotplug.txt for
> some details regarding online/possible CPUs...
i'll do one more post on this, even though i never imagined it was
going to get this complicated. to recap, what i'm trying to
On Mon, 22 Oct 2012, Srivatsa Bhat wrote:
> Hi,
>
> You might want to take a look at Documentation/cpu-hotplug.txt for
> some details regarding online/possible CPUs...
ah, quite so, although that file is definitely out of date. it
doesn't mention the command-line parameters "nosmp" or "nr_cpus
Hi,
You might want to take a look at Documentation/cpu-hotplug.txt for some details
regarding online/possible CPUs...
Regards,
Srivatsa S. Bhat
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> -Original Message-
> From: kernelnewbies-boun...@kernelnewbies.org [mailto:kernelnewbies-
> boun...@kernelnewbies.org] On Behalf Of Robert P. J. Day
> Sent: Monday, October 22, 2012 12:47 PM
> To: Kernel Newbies
> Subject: online, possible and disabled cpus
>
>
at this point, i'm trying to rationalize why i'm seeing this in the
output of dmesg:
[0.00] smpboot: Allowing 16 CPUs, 8 hotplug CPUs
on my quad-core asus laptop, as in -- where is that "16" coming from?
if i list /proc/cpuinfo, i see 8 processors, so i'm just trying to
understand what
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