http://oss.sgi.com/bugzilla/show_bug.cgi?id=290
------- Additional Comments From condor-sgi@xxxxxxxxxxxxx 2003-24-11 17:16 PDT
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Well, I think it's a leak largely because it eats non-buffer, non-cached RAM,
and when I try to load up programs that consume RAM (Mozilla or KDE, for
instance), it starts swapping, sometimes quite a lot. On a fresh boot before
running this test, it doesn't need to swap at all.
Plus, in this test, most of the used RAM doesn't show up under buffers or
cache... it just sort of disappears from free. If you take the vmstat output,
dump it into a spreadsheet and add up all the free/buffers/cache RAM for each
vmstat line, you'd expect that number to remain mostly constant. (Instead it
steadily decreases.) The Perl program uses a fairly constant amount of RAM,
there's nothing else running (single-user mode), and since there's little change
in userspace RAM usage, what's subtracted/added from the free gets
added/subtracted to the buffers and cache.
(This is on a machine with 512MB RAM, btw.)
I'm assuming here that the inode cache is included in the "cache" statistic.
Sadly I know very little about kernel programming (or internals, for that
matter, beyond general ideas), so I could easily be wrong.
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