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Avoiding memory paging with large data-set [message #6283] Wed, 22 May 1996 00:00
David Foster is currently offline  David Foster
Messages: 341
Registered: January 1996
Senior Member
Hello all.

I have a question for those familiar with UNIX systems stuff. We
are using SPARC 10s and 20s under Solaris 2.3, and often have to
work with very large data-sets. Sometimes the operations go pretty
fast, and sometimes they go REALLY slow! Same machine, even the
same data, but the time varies. I can tell that the machine is
having to page the memory in and out continuously when things
slow down, but I don't know why.

Our systems have 32MB memory. A typical data-set is a 3D volume
of about 16MB. Can anyone direct me in the right direction to
try and track down this problem? Obviously we need more memory,
but the intermittency is strange. Any help in how to analyze
the system's "state", including memory allocated and for which
processes, would be greatly appreciated.

Dave Foster
foster@bial1.ucsd.edu
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