On Sat, Jan 18, 2003 at 01:30:25PM +0100, Adrian 'Dagurashibanipal' von Bidder wrote: > On Fri, 2003-01-17 at 22:45, David Dumortier wrote: > > > Does anybody know: is there an easy way to monitor cache efficiency in > > > Linux? (x86) > > > > If it exists, it must to laws of Heisenberg. Who know h value ? > > It would require hardware support - that's why I specifically asked > about x86. I know intel hardware has *some* performance counters, I just > don't know if it has 'cash miss'/'cash hit' counters that could be read. > If you read those values seldom enough, I think the influence of the > reading process could be relatively small.
Yes, it has some counters: Pentium: MSR 0x00000011 Pentium Pro: MSR 0x00000186 Athlon: MSR 0xC0010000 more info on Ralf Brown's Interrupt List <http://www.cs.cmu.edu/afs/cs.cmu.edu/user/ralf/pub/interrupt-list/> regards, guillem
