From: Felix Becker <mail@felixbecker.name>
To: linux-kernel@vger.kernel.org
Subject: L1-icache-loads statistics on i7 2600k?
Date: Fri, 19 Apr 2013 06:02:03 +0200 [thread overview]
Message-ID: <5170C1BB.1090707@felixbecker.name> (raw)
Hi,
i'm trying to trace the caching behaviour of one of my applications
using the "perf" tool. On my i7 Q 820 i can see the l1 instruction
cache loads using "perf stat -e L1-icache-loads" On my i7-2600k i'm
getting "<not supported> L1-icache-loads"
Tracing the following events works fine:
L1-dcache-loads
L1-dcache-load-misses
L1-icache-load-misses
So do you know why it is possible to read dcache loads / misses and
icache misses, but not icache loads? Doesn't the i7 2600k PMU provide
this value or is something wrong with my kernel on this machine?
Regards
Felix
reply other threads:[~2013-04-19 4:08 UTC|newest]
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