Re: Problem with Lenny
Ran out memory. This is my conclusion. Originally, I had given
500mb ram. Though top was showing 300mb utilization, memstat showed
1.1gig. It seems the later is the one I was supposed to pay attention
to. I am currently looking into the difference between the top's
memory utilization display and that of memstat.
On Thu, Jan 21, 2010 at 9:40 PM, Jeffrey Cao <jcao.linux@gmail.com> wrote:
> On 2010-01-21, Stan Hoeppner <stan@hardwarefreak.com> wrote:
>> Roman Gelfand put forth on 1/20/2010 9:26 PM:
>>> Jan 20 21:59:37 mail kernel: [ 0.000000] Linux version 2.6.26-2-686
>>> (Debian 2.6.26-19lenny2) (dannf@debian.org) (gcc version 4.1.3
>>> 20080704 (prerelease) (Debian 4.1.2-25)) #1 SMP Wed Nov 4 20:45:37 UTC
>>> 2009
>>> My machine freezes every so often. I was wodering if there is any
>>> clues in kernel.log exerpts below. Thanks in advance
>>
>> Define "freezes". Post the machine brand/model/specs.
>>
>>> Jan 20 21:59:37 mail kernel: [ 0.000000] SMP: Allowing 0 CPUs, 0 hotplug CPUs
>>> Jan 20 21:59:37 mail kernel: [ 0.000000] PERCPU: Allocating 37992
>>> bytes of per cpu data
>>> Jan 20 21:59:37 mail kernel: [ 0.000000] NR_CPUS: 8, nr_cpu_ids: 1
>>
>> This ^^ is very odd. "Allowing 0 CPUs" is very strange. Given that, this
>> "NR_CPUS: 8" is even more strange.
> "NR_CPUS: 8" is not a strange thing. It's the number of CPUs that the kernel
> supports, not the CPUs existed in the machine.
>
> config NR_CPUS
> int "Maximum number of CPUs" if SMP && !MAXSMP
> range 2 8 if SMP && X86_32 && !X86_BIGSMP
> range 2 512 if SMP && !MAXSMP
> default "1" if !SMP
> default "4096" if MAXSMP
> default "32" if SMP && (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000)
> default "8" if SMP
> ---help---
> This allows you to specify the maximum number of CPUs which this
> kernel will support. The maximum supported value is 512 and the
> minimum value which makes sense is 2.
>
> This is purely to save memory - each supported CPU adds
> approximately eight kilobytes to the kernel image.
>
>>
>>> Jan 20 21:59:37 mail kernel: [ 0.004000] Memory: 598724k/614336k
>>> available (1770k kernel code, 14940k reserved, 750k data, 244k init,
>>> 0k highmem)
>>
>> Also very strange ^^
>>
>> According to that above, your system has 0 smp cpus, but it has 8 cpus, and only
>> one of those 8 has an ID. This also says you have ~600MB of system memory.
>> There is no physical combo of DIMMs that yields 600MB so we can assume you have
>> motherboard video chip and the BIOS is assigning system RAM for the frame
>> buffer. But on a modern system, why do you have so little RAM installed?
>>
>> Unfortunately the system information provided by kern.log is incomplete. Please
>> post output from dmesg so we can get a more complete picture of your system.
>> Your kern.log info alone is not enough to diagnose what is causing your system
>> to "freeze". Something to consider is that kernel issues usually cause panics,
>> not freezes. If your system is freezing, or "hard locking", this is usually a
>> sign of:
>>
>> 1. A thermal issue
>> 2. Defective hardware
>> 3. Hardware compatibility mismatch
>>
>> For comparison to your kern.log, I have a two CPU system, each a single core CPU:
>>
>> Jan 20 01:59:42 greer kernel: found SMP MP-table at [c00f5b90] f5b90
>> Jan 20 01:59:42 greer kernel: SMP: Allowing 2 CPUs, 0 hotplug CPUs
>> Jan 20 01:59:42 greer kernel: NR_CPUS:2 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:1
>>
>
>
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