From: Will Newton <will.newton@linaro.org>
To: Torvald Riegel <triegel@redhat.com>
Cc: "Joseph S. Myers" <joseph@codesourcery.com>,
"Carlos O'Donell" <carlos@redhat.com>,
GLIBC Devel <libc-alpha@sourceware.org>,
libc-ports <libc-ports@sourceware.org>
Subject: Re: [PATCH] Unify pthread_once (bug 15215)
Date: Mon, 31 Mar 2014 11:44:00 -0000 [thread overview]
Message-ID: <CANu=DmiGP9b+KSW3DrQKoFCKVQ3mscajBz0-ZASivKQVEXbtjw@mail.gmail.com> (raw)
In-Reply-To: <1381182784.18547.138.camel@triegel.csb>
On 7 October 2013 22:53, Torvald Riegel <triegel@redhat.com> wrote:
> On Mon, 2013-10-07 at 16:04 +0000, Joseph S. Myers wrote:
>> I have no comments on the substance of this patch, but note that ports/
>> has a separate ChangeLog file for each architecture.
>
> Sorry. The attached patch now has separate ChangeLog entries for each of
> the affected archs.
There seems to be a significant performance delta on aarch64:
Old code:
"pthread_once": {
"": {
"duration": 9.29471e+09, "iterations": 1.10667e+09, "max": 24.54,
"min": 8.38, "mean": 8.39882
New code:
"pthread_once": {
"": {
"duration": 9.72366e+09, "iterations": 4.33843e+08, "max": 30.86,
"min": 22.38, "mean": 22.4128
And also ARM:
Old code:
"pthread_once": {
"": {
"duration": 8.38662e+09, "iterations": 6.6695e+08, "max": 35.292,
"min": 12.416, "mean": 12.5746
New code:
"pthread_once": {
"": {
"duration": 9.26424e+09, "iterations": 3.07574e+08, "max": 86.125,
"min": 28.875, "mean": 30.1204
It would be nice to understand the source of this variation. I can put
it on my todo list but I can't promise I will be able to look at it
any time soon.
--
Will Newton
Toolchain Working Group, Linaro
next prev parent reply other threads:[~2014-03-31 11:44 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-08 14:44 Torvald Riegel
2013-05-08 17:51 ` Rich Felker
2013-05-08 20:47 ` Torvald Riegel
2013-05-08 21:25 ` Rich Felker
2013-05-09 8:39 ` Torvald Riegel
2013-05-09 14:02 ` Rich Felker
2013-05-09 15:14 ` Torvald Riegel
2013-05-09 15:56 ` Rich Felker
2013-05-10 8:31 ` Torvald Riegel
2013-05-10 13:22 ` Rich Felker
2013-05-23 4:15 ` Carlos O'Donell
2013-08-26 12:50 ` Ondřej Bílka
2013-08-26 16:45 ` Rich Felker
2013-08-26 18:41 ` Ondřej Bílka
2013-08-27 2:29 ` Rich Felker
2013-10-06 0:20 ` Torvald Riegel
2013-10-06 21:41 ` Torvald Riegel
2013-10-07 16:04 ` Joseph S. Myers
2013-10-07 21:53 ` Torvald Riegel
2014-03-31 11:44 ` Will Newton [this message]
2014-03-31 20:09 ` Torvald Riegel
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