From: Alexey Budankov <alexey.budankov@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Andi Kleen <ak@linux.intel.com>, Kan Liang <kan.liang@intel.com>,
Dmitri Prokhorov <Dmitry.Prohorov@intel.com>,
Valery Cherepennikov <valery.cherepennikov@intel.com>,
David Carrillo-Cisneros <davidcc@google.com>,
Stephane Eranian <eranian@google.com>,
Mark Rutland <mark.rutland@arm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2]: perf/core: addressing 4x slowdown during per-process, profiling of STREAM benchmark on Intel Xeon Phi
Date: Mon, 29 May 2017 14:45:00 +0300 [thread overview]
Message-ID: <04fc9b86-8165-7c64-9f23-eb861d9384c9@linux.intel.com> (raw)
In-Reply-To: <20170529112311.ht3pg2dd7pjm3m3a@hirez.programming.kicks-ass.net>
On 29.05.2017 14:23, Peter Zijlstra wrote:
> On Mon, May 29, 2017 at 01:56:05PM +0300, Alexey Budankov wrote:
>> On 29.05.2017 13:43, Peter Zijlstra wrote:
>
>>> Why can't the tree do both?
>>>
>>
>> Well, indeed, the tree provides such capability too. However switching to
>> the full tree iteration in cases where we now go through _groups lists will
>> enlarge the patch, what is probably is not a big deal. Do you think it is
>> worth implementing the switch?
>
> Do it as a series of patches, where patch 1 introduces the tree, patches
> 2 through n convert the list users into tree users, and patch n+1
> removes the list.
Well ok, let's do that additionally but please expect delay in delivery
(I am OOO till Jun 14).
>
> I think its good to not have duplicate data structures if we can avoid
> it.
>
yeah, makes sense.
next prev parent reply other threads:[~2017-05-29 11:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-26 22:13 [PATCH]: perf/core: addressing 4x slowdown during per-process profiling of STREAM benchmark on Intel Xeon Phi Alexey Budankov
2017-05-27 11:19 ` [PATCH v2]: perf/core: addressing 4x slowdown during per-process, " Alexey Budankov
2017-05-29 7:45 ` Peter Zijlstra
2017-05-29 9:24 ` Alexey Budankov
2017-05-29 10:33 ` Peter Zijlstra
2017-05-29 10:46 ` Alexey Budankov
2017-05-29 7:46 ` Peter Zijlstra
2017-05-29 9:15 ` Alexey Budankov
2017-05-29 10:43 ` Peter Zijlstra
2017-05-29 10:56 ` Alexey Budankov
2017-05-29 11:23 ` Peter Zijlstra
2017-05-29 11:45 ` Alexey Budankov [this message]
2017-06-15 17:42 ` Alexey Budankov
2017-06-21 15:39 ` Alexey Budankov
2017-06-30 10:22 ` Alexey Budankov
2017-05-31 21:33 ` David Carrillo-Cisneros
2017-06-14 11:27 ` Alexey Budankov
2017-05-29 12:03 ` [PATCH]: perf/core: addressing 4x slowdown during per-process " Alexander Shishkin
2017-05-29 13:43 ` Alexey Budankov
2017-05-29 15:22 ` Peter Zijlstra
2017-05-29 15:29 ` Peter Zijlstra
2017-05-29 16:41 ` Alexey Budankov
2017-05-30 8:29 ` Alexander Shishkin
2017-06-14 10:07 ` Alexey Budankov
2017-06-15 17:44 ` Alexey Budankov
2017-05-31 0:04 [PATCH v2]: perf/core: addressing 4x slowdown during per-process, " Arun Kalyanasundaram
2017-06-14 12:26 ` Alexey Budankov
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=04fc9b86-8165-7c64-9f23-eb861d9384c9@linux.intel.com \
--to=alexey.budankov@linux.intel.com \
--cc=Dmitry.Prohorov@intel.com \
--cc=acme@kernel.org \
--cc=ak@linux.intel.com \
--cc=alexander.shishkin@linux.intel.com \
--cc=davidcc@google.com \
--cc=eranian@google.com \
--cc=kan.liang@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=valery.cherepennikov@intel.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).