Re: update re: fork() failures [in 2.1.103]

[Paul Kimoto <kimoto@lightlink.com>]

On Fri, Jun 19, 1998 at 06:59:56PM +0200, Rik van Riel wrote:
>> %CPU %MEM  SIZE   RSS
>> 95.7  1.6  9364   520 mprime        15.4.2 (internet Mersenne prime search)

> Shouldn't be much of a problem... But 'eh, does the
> Mersenne program regularly do memory I/O?
> It could be that it loads large chunks of memory and
> frees small portions from the middle of it. The Linux
> MM system could have a problem with that...

> The reason I picked this process, is that it's RSS is
> only one 18th of it's total size, which is somewhat
> weird for a 'normal' Unix process.

I *think* that it allocates a huge amount of memory,
then uses only a small portion of it.

The above shows an inconsistency between "ps" and "top":
  according to "ps",      SIZE=9364, RSS=404;
  but according to "top", SIZE= 500, RSS=404, SWAP=96.

"grep '^Vm' /proc/<pid>/status" says
> VmSize:     9364 kB
> VmLck:         0 kB
> VmRSS:       464 kB
> VmData:     8400 kB
> VmStk:        12 kB
> VmExe:        72 kB
> VmLib:       580 kB

	-Paul <kimoto@lightlink.com>