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Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
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From:
Andi Kleen <andi@...>
To: Christoph Lameter <clameter@...>
Cc: <linux-kernel@...>
Subject:
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
Date: Wednesday, August 1, 2007 - 6:53 am
Christoph Lameter <clameter@sgi.com> writes:
quoted text
> Export cycles_to_ns (after renaming the cycles_2_ns to cycles_to_ns to be > conforming to other arches).
This function is broken in some cases (e.g Opteron with powernow or AMD dual core or older Intel systems) and going away. The TSCs tick with different frequencies on different CPU there. In general i would recommend to only report cycles. -Andi -
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Messages in current thread:
[PATCH 2/7] Simple Performance Counters: x86_64 support
, Christoph Lameter
, (Tue Jul 31, 7:25 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Andi Kleen
, (Wed Aug 1, 6:53 am)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Christoph Lameter
, (Wed Aug 1, 1:52 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Andi Kleen
, (Wed Aug 1, 2:26 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Christoph Lameter
, (Wed Aug 1, 2:29 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Andi Kleen
, (Wed Aug 1, 2:40 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Christoph Lameter
, (Wed Aug 1, 2:45 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Andi Kleen
, (Wed Aug 1, 2:57 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Christoph Lameter
, (Wed Aug 1, 2:58 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Andi Kleen
, (Wed Aug 1, 3:15 pm)
Re: [PATCH 2/7] Simple Performance Counters: x86_64 support
, Mathieu Desnoyers
, (Fri Aug 17, 12:10 pm)
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