From: Manuel Selva <selva.manuel@gmail.com>
To: Andi Kleen <andi@firstfloor.org>, Harald Servat <harald.servat@bsc.es>
Cc: linux-perf-users@vger.kernel.org
Subject: Re: Sample memory references with at least a given latency?
Date: Thu, 05 Feb 2015 19:54:13 +0100 [thread overview]
Message-ID: <54D3BC55.1050302@gmail.com> (raw)
In-Reply-To: <87bnl8jnwf.fsf@tassilo.jf.intel.com>
What information is present in the samples recorded by perf record (on
which ocperf relies) ?
Manu
On 02/05/2015 05:58 PM, Andi Kleen wrote:
> Harald Servat <harald.servat@bsc.es> writes:
>
>> is there any way to configure perf to sample memory references
>> through PEBS and enable the Load Latency Performance Monitoring
>> Facility (section 18.7.1.2 from the Intel 64 and IA-32 Architectures
>> Software Developer's Manual).
>
> $ ocperf.py record -e mem_trans_retired.load_latency_gt_128 -a sleep 1
> perf record -e
> cpu/event=0xcd,umask=0x1,ldlat=0x80,name=mem_trans_retired_load_latency_gt_128/
> -a sleep 1
> [ perf record: Woken up 1 times to write data ]
> [ perf record: Captured and wrote 0.438 MB perf.data (~19125 samples) ]
>
next prev parent reply other threads:[~2015-02-05 18:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-04 12:48 Sample memory references with at least a given latency? Harald Servat
[not found] ` <CALbiyZyJhUNfMNOYwJ26P-Lq+3E_xM8SpZ9CG+WR70-n_k9x8A@mail.gmail.com>
2015-02-04 14:20 ` Harald Servat
2015-02-04 14:33 ` Vince Weaver
2015-02-05 11:33 ` Manuel Selva
2015-02-05 11:39 ` Harald Servat
2015-02-05 16:58 ` Andi Kleen
2015-02-05 18:54 ` Manuel Selva [this message]
2015-02-05 18:59 ` Andi Kleen
[not found] ` <CALbiyZw=SqhFLtzse53SW_B-JMo-+AxPGDAE9C_aBmo4X88mrA@mail.gmail.com>
2015-02-04 13:34 ` Harald Servat
2015-02-18 9:31 ` Harald Servat
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=54D3BC55.1050302@gmail.com \
--to=selva.manuel@gmail.com \
--cc=andi@firstfloor.org \
--cc=harald.servat@bsc.es \
--cc=linux-perf-users@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.