Re: [LUG] Size of /proc/kcore

[Keith Abraham <kabraham@xxxxxxx>]

On 13/09/10 15:19, Simon Waters wrote:
> This is universally the size of memory, being as it is a mapping of 
> memory except.....
>
> 64bit AMD machines (virtual) have 128TB for /proc/kcore
>
> This seems wrong, and the nice folk in the LKML were discussing a 
> similar issue in June 2009.
>
> Anyone know if this is simply a kernel bug or did someone deliberately 
> decide to make it a stupid size? Anyone have a 64bit system, 
> especially AMD, where the size of /proc/kcore is the size of RAM, and 
> if so which kernel are you running please? All the reports seem to be 
> AMD64 circa 2.6.32
I'm using kernel 2.6.35-4 and my /proc/kcore is 128.0 TiB also.

AFAIK this is the file that gets dumped by the kernel when there is a 
crash. Like all /proc file it isn't a real file but i suppose it has to 
be represented as very large just in case the memory dump is huge.

Keith


--
The Mailing List for the Devon & Cornwall LUG
http://mailman.dclug.org.uk/listinfo/list
FAQ: http://www.dcglug.org.uk/listfaq