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monitoring cache performance of user programs?
I'm wondering if anybody is using pmc(1) to monitor cache performance of
user programs on modern x86? Maybe there is a better way to do this in
NetBSD, today, such as a facility provided by DTrace?
Ultimately I would like to have a performance profile of some of my
programs that tells not only how long is spent in each line, but roughly
how the time was spent, so that I can make better decisions about
whether/how to optimize the code. Even if time is ascribed to causes
(cache misses, page faults) in a very approximate way, I think that it
would be more illuminating than simulating the code in my head.
dyoung%pobox.com@localhost Urbana, IL (217) 721-9981
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