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Jan Abraham wrote:
>
> > Linux generally freezes because of I/O operations, that is to say
> > network I/O or more probably disk I/O.
> I've tried to do an strace on the apache one time, but due to the
> performance impact, the freezes occured less times then. I catched one
The original suggestion still sounds best to me. I'd log the swap space used
and see if it gets close to the limit when it freezes. Unfortunately
you don't have access to the amount of memory in use (AFAIK) as it's
all allocated even if not being actively used. Disk I/O and load average
are also available in `top`. Presumably they're being read from somewhere
in /proc.
Joe
--
Joseph Mack PhD, High Performance Computing & Scientific Visualization
SAIC, Supporting the EPA Research Triangle Park, NC 919-541-0007
Federal Contact - John B. Smith 919-541-1087 - smith.johnb@xxxxxxx
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