Hello Joe, Joseph Landman wrote: > Hi Nathan: > > I took the liberty of modifying your Perl script to instrument it for > process monitoring (memory size), and time stamp the iterations. If you > have a memory leak, you will notice the process getting monotonically > bigger as a function of time. Have not seen evidence of memory leakage - the process quickly jumps to a given amount of memory ( ~ 1.4 G on opteron/64, under 1G on IA32 ) and stays there (similar to what you report). > Have you run memory tests on this machine? I highly recommend > memtest86 (http://www.memtest86.com) though I do not know if it runs on > an Opteron. Let memtest grind over a weekend. If it catches faults, > you might have a possible culprit. memtest86 does not compile on the opteron, giving an error during an as assembly. Thanks for your help - I'll let poeple know what I find. Hopefully it's just a ram chip, not an underlying instability with the kernel or perl. nathan