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From: "Jan Pokorný" <poki@redhat.com>
To: linux-perf-users@vger.kernel.org
Subject: perf utility question: "Sky high iTLB-load-misses"
Date: Wed, 8 Nov 2017 17:34:40 +0100	[thread overview]
Message-ID: <20171108163440.GA10004@redhat.com> (raw)

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Hello,

I was recently comparing the effect of using orphan section offloading
of some data in the libqb project[*] and basically run into the
same rather strange reports by perf as asked on StackOverflow:
https://stackoverflow.com/q/47107255
(except that I'm on Skylake processor).

Is iTLB-load-misses > 100% reported because of some deficiency
of the platform, a bug in perf, or an expected behaviour?

Thanks and cheers.
Please, keep me in the loop, I am not subscribed to the list.

[*] comparing log_callsite_bench_section{full,less} from
https://github.com/ClusterLabs/libqb/pull/266/commits/a2b96193ec9a677e18824736c363df35ee0c68dd    

-- 
Jan (Poki)

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             reply	other threads:[~2017-11-08 16:34 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-08 16:34 Jan Pokorný [this message]
2017-11-08 16:55 ` perf utility question: "Sky high iTLB-load-misses" Vince Weaver
2017-11-09 13:53   ` Arnaldo Carvalho de Melo
2017-11-09 14:38     ` Andi Kleen
2017-11-09 18:50       ` Jan Pokorný
2017-11-09 19:12         ` Bram Stolk
2017-11-09 19:37           ` Vince Weaver

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