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From: "Carlos O'Donell" <carlos@redhat.com>
To: Will Newton <will.newton@linaro.org>
Cc: libc-ports@sourceware.org, Patch Tracking <patches@linaro.org>
Subject: Re: [PATCH] sysdeps/arm/armv7/multiarch/memcpy_impl.S: Improve performance.
Date: Fri, 30 Aug 2013 17:14:00 -0000	[thread overview]
Message-ID: <5220D30B.9080306@redhat.com> (raw)
In-Reply-To: <CANu=DmiBHoymFKTvaW_VsdhWZEYwkfViz1tTeRgj7H80f0FntA@mail.gmail.com>

On 08/27/2013 03:46 AM, Will Newton wrote:
> On 12 August 2013 08:55, Will Newton <will.newton@linaro.org> wrote:
>>
>> A small change to the entry to the aligned copy loop improves
>> performance slightly on A9 and A15 cores for certain copies.
>>
>> ports/ChangeLog.arm:
>>
>> 2013-08-07  Will Newton  <will.newton@linaro.org>
>>
>>         * sysdeps/arm/armv7/multiarch/memcpy_impl.S: Tighten check
>>         on entry to aligned copy loop for improved performance.
>> ---
>>  ports/sysdeps/arm/armv7/multiarch/memcpy_impl.S | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> Ping?

How did you test the performance?

glibc has a performance microbenchmark, did you use that?

Cheers,
Carlos.

  reply	other threads:[~2013-08-30 17:14 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-12  7:55 Will Newton
2013-08-27  7:46 ` Will Newton
2013-08-30 17:14   ` Carlos O'Donell [this message]
2013-08-30 18:48     ` Will Newton
2013-08-30 19:26       ` Carlos O'Donell
2013-09-02 14:18         ` Will Newton
2013-09-03 16:14           ` Carlos O'Donell
     [not found]         ` <CANu=DmhA9QvSe6RS72Db2P=yyjC72fsE8d4QZKHEcNiwqxNMvw@mail.gmail.com>
2013-09-02 14:18           ` benchmark improvements (Was: Re: [PATCH] sysdeps/arm/armv7/multiarch/memcpy_impl.S: Improve performance.) Siddhesh Poyarekar
2013-09-03 13:46             ` Will Newton
2013-09-03 17:48               ` Ondřej Bílka
2013-09-02 19:57           ` [PATCH] sysdeps/arm/armv7/multiarch/memcpy_impl.S: Improve performance Ondřej Bílka
2013-09-03 16:18           ` Carlos O'Donell
2013-09-03 17:37             ` Ondřej Bílka
2013-09-03 17:52               ` Carlos O'Donell
2013-09-03 18:57                 ` Ondřej Bílka
2013-09-03 19:15                   ` Carlos O'Donell
2013-09-04  7:27                     ` Siddhesh Poyarekar
2013-09-04 11:03                       ` Ondřej Bílka
2013-09-04 11:43                         ` Siddhesh Poyarekar
2013-09-04 17:37                         ` Ryan S. Arnold
2013-09-05  8:04                           ` Ondřej Bílka
2013-09-04 15:30                       ` Carlos O'Donell
2013-09-04 17:35                       ` Ryan S. Arnold
2013-09-05 11:07                         ` Ondřej Bílka
2013-09-05 11:54                         ` Joseph S. Myers
2013-09-03 19:34               ` Ryan S. Arnold
2013-09-07 11:55                 ` Ondřej Bílka
2013-09-03 19:31             ` Ryan S. Arnold
2013-09-03 19:54               ` Carlos O'Donell
2013-09-03 20:56                 ` Ryan S. Arnold
2013-09-03 23:29                   ` Ondřej Bílka
2013-09-03 23:31                   ` Carlos O'Donell
2013-09-03 22:27               ` Ondřej Bílka
2013-08-29 23:58 ` Joseph S. Myers
2013-08-30 14:56   ` Will Newton
2013-08-30 15:18     ` Joseph S. Myers
2013-08-30 18:46       ` Will Newton

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