Messages in this thread | | | From | Francis Moreau <> | Subject | Re: perf tools miscellaneous questions | Date | Sat, 06 Nov 2010 15:44:24 +0100 |
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Vince Weaver <vweaver1@eecs.utk.edu> writes:
> On Fri, 5 Nov 2010, Francis Moreau wrote: > >> Victor Jimenez <victor.javier@bsc.es> writes: >> >> [...] >> >> > If you are measuring last level cache misses, I would recommend you to >> > use a memory intensive application/benchmark instead of /bin/true, as >> > otherwise there can be a significant variation between two runs. >> >> I agree. >> >> But still with intensive application, I got the same results: > > > you're going to need to get your architectural manual for your processor > and use raw events (not the kernel default ones) if you really want to > find out what's going on. A tool like libpfm4 can help change the names > to raw events for you.
Ouch that's a bit rude for a man page ;)
Specially since 'llc-loads-misses' is and should be self speaking.
OK, my cpu is described by:
,---- | vendor_id : GenuineIntel | cpu family : 6 | model : 15 | model name : Intel(R) Core(TM)2 CPU T5500 @ 1.66GHz `----
Could you point out the best architecture manual for it which describe the raw events ?
BTW, I'm wondering if event names are coherent across the different architectures supported by Linux.
Thanks -- Francis
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