From: Robert Richter <robert.richter@amd.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Stephane Eranian <eranian@google.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 00/12] perf/x86-ibs: Precise event sampling with IBS for AMD CPUs
Date: Tue, 3 Apr 2012 12:48:24 +0200 [thread overview]
Message-ID: <20120403104824.GI16322@erda.amd.com> (raw)
In-Reply-To: <20120402191123.GA17124@gmail.com>
On 02.04.12 21:11:23, Ingo Molnar wrote:
> Mind posting some perf annotate output of any well-known kernel
> function showing skiddy '-e cpu-cycles' output versus skid-less
> '-e cpu-cycles:p' output?
This is what I got for _raw_spin_lock_irqsave (first perfctr, second
ibs).
-Robert
# perf annotate -k vmlinux -s _raw_spin_lock_irqsave -i perf-r076.data | cat
Percent | Source code & Disassembly of vmlinux
------------------------------------------------
:
:
:
: Disassembly of section .text:
:
: ffffffff8145036a <_raw_spin_lock_irqsave>:
0.00 : ffffffff8145036a: push %rbp
0.00 : ffffffff8145036b: mov %rsp,%rbp
0.00 : ffffffff8145036e: callq ffffffff81456c40 <mcount>
0.00 : ffffffff81450373: pushfq
0.00 : ffffffff81450374: pop %rax
0.00 : ffffffff81450375: cli
0.00 : ffffffff81450376: mov $0x100,%edx
0.00 : ffffffff8145037b: lock xadd %dx,(%rdi)
0.00 : ffffffff81450380: mov %dl,%cl
0.00 : ffffffff81450382: shr $0x8,%dx
10.34 : ffffffff81450386: cmp %dl,%cl
0.00 : ffffffff81450388: je ffffffff81450390 <_raw_spin_lock_irqsave+0x26>
10.34 : ffffffff8145038a: pause
65.52 : ffffffff8145038c: mov (%rdi),%cl
13.79 : ffffffff8145038e: jmp ffffffff81450386 <_raw_spin_lock_irqsave+0x1c>
0.00 : ffffffff81450390: leaveq
0.00 : ffffffff81450391: retq
# perf annotate -k vmlinux -s _raw_spin_lock_irqsave -i perf-r076pp.data | cat
Percent | Source code & Disassembly of vmlinux
------------------------------------------------
:
:
:
: Disassembly of section .text:
:
: ffffffff8145036a <_raw_spin_lock_irqsave>:
0.00 : ffffffff8145036a: push %rbp
0.00 : ffffffff8145036b: mov %rsp,%rbp
0.00 : ffffffff8145036e: callq ffffffff81456c40 <mcount>
0.00 : ffffffff81450373: pushfq
0.00 : ffffffff81450374: pop %rax
0.00 : ffffffff81450375: cli
0.00 : ffffffff81450376: mov $0x100,%edx
0.00 : ffffffff8145037b: lock xadd %dx,(%rdi)
2.78 : ffffffff81450380: mov %dl,%cl
0.00 : ffffffff81450382: shr $0x8,%dx
2.78 : ffffffff81450386: cmp %dl,%cl
11.11 : ffffffff81450388: je ffffffff81450390 <_raw_spin_lock_irqsave+0x26>
72.22 : ffffffff8145038a: pause
2.78 : ffffffff8145038c: mov (%rdi),%cl
8.33 : ffffffff8145038e: jmp ffffffff81450386 <_raw_spin_lock_irqsave+0x1c>
0.00 : ffffffff81450390: leaveq
0.00 : ffffffff81450391: retq
--
Advanced Micro Devices, Inc.
Operating System Research Center
prev parent reply other threads:[~2012-04-03 10:48 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-02 18:19 [PATCH 00/12] perf/x86-ibs: Precise event sampling with IBS for AMD CPUs Robert Richter
2012-04-02 18:19 ` [PATCH 01/12] perf/x86-ibs: Fix update of period Robert Richter
2012-05-09 14:29 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 02/12] perf: Pass last sampling period to perf_sample_data_init() Robert Richter
2012-05-09 14:30 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 03/12] perf/x86-ibs: Enable ibs op micro-ops counting mode Robert Richter
2012-05-09 14:31 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 04/12] perf/x86-ibs: Fix frequency profiling Robert Richter
2012-05-09 14:32 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 05/12] perf/x86-ibs: Take instruction pointer from ibs sample Robert Richter
2012-05-09 14:33 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 06/12] perf/x86-ibs: Precise event sampling with IBS for AMD CPUs Robert Richter
2012-04-14 10:21 ` Peter Zijlstra
2012-04-23 9:56 ` Robert Richter
2012-04-27 12:34 ` Robert Richter
2012-04-27 12:39 ` Stephane Eranian
2012-04-27 12:54 ` Robert Richter
2012-04-27 13:10 ` Stephane Eranian
2012-04-27 15:18 ` Robert Richter
2012-04-27 15:30 ` Peter Zijlstra
2012-04-27 15:57 ` Stephane Eranian
2012-04-27 15:30 ` Peter Zijlstra
2012-04-27 16:09 ` Robert Richter
2012-04-27 16:21 ` Peter Zijlstra
2012-04-27 16:23 ` Stephane Eranian
2012-04-14 10:22 ` Peter Zijlstra
2012-04-23 8:41 ` Robert Richter
2012-04-23 10:36 ` Peter Zijlstra
2012-04-14 10:24 ` Peter Zijlstra
2012-04-23 10:08 ` Robert Richter
2012-05-02 10:33 ` [PATCH v2] " Robert Richter
2012-05-02 11:14 ` Peter Zijlstra
2012-05-04 17:53 ` Peter Zijlstra
2012-05-09 14:34 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 07/12] perf/x86-ibs: Rename some variables Robert Richter
2012-05-09 14:34 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 08/12] perf/x86-ibs: Trigger overflow if remaining period is too small Robert Richter
2012-05-09 14:35 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 09/12] perf/x86-ibs: Extend hw period that triggers overflow Robert Richter
2012-05-09 14:36 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 10/12] perf/x86-ibs: Implement workaround for IBS erratum #420 Robert Richter
2012-05-09 14:37 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 11/12] perf/x86-ibs: Catch spurious interrupts after stopping ibs Robert Richter
2012-05-09 14:38 ` [tip:perf/core] perf/x86-ibs: Catch spurious interrupts after stopping IBS tip-bot for Robert Richter
2012-04-02 18:19 ` [PATCH 12/12] perf/x86-ibs: Fix usage of IBS op current count Robert Richter
2012-05-09 14:39 ` [tip:perf/core] " tip-bot for Robert Richter
2012-04-02 19:11 ` [PATCH 00/12] perf/x86-ibs: Precise event sampling with IBS for AMD CPUs Ingo Molnar
2012-04-03 10:48 ` Robert Richter [this message]
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