From: Janos Laube <janos.dev@gmail.com>
To: Johannes.Schindelin@gmx.de
Cc: Marius Storm-Olsen <marius@trolltech.com>,
git@vger.kernel.org, msysgit@googlegroups.com
Subject: Re: [PATCH] Add custom memory allocator to MinGW and MacOS builds
Date: Fri, 3 Apr 2009 15:50:08 +0000 [thread overview]
Message-ID: <9d6091530904030850x4eff9e54ga5fb6b13cd036335@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.1.00.0904031659290.10279@pacific.mpi-cbg.de>
>
> Hi,
>
> On Fri, 3 Apr 2009, Marius Storm-Olsen wrote:
>
>> The standard allocator on Windows is pretty bad prior to Windows Vista,
>> and nedmalloc is better than the modified dlmalloc provided with newer
>> versions of the MinGW libc.
>>
>> Note that both Windows and MacOSX need to have an implementation of
>> strdup, which I added at the end of nedmalloc.c, to ensure that strdup
>> use the same heap. So, setting USE_NED_ALLOCATION = YesPlease will also
>> add this function reimplementation, unless you define
>> NEDMALLOC_DONT_OVERRIDE_STRDUP.
>>
>> NedMalloc stats in Git
>> ----------------------
>> All results are the best result out of 3 runs. The
>> benchmarks have been done on different hardware, so
>> the repack times are not comparable.
>>
>> These benchmarks are all based on 'git repack -adf'
>> on the Linux kernel.
>>
>> XP
>> -----------------------------------------------
>> MinGW Threads Total Time Speed
>> -----------------------------------------------
>> 3.4.2 (1T) 00:12:28.422
>> 3.4.2 + nedmalloc (1T) 00:07:25.437 1.68x
>>
>> 3.4.5 (1T) 00:12:20.718
>> 3.4.5 + nedmalloc (1T) 00:07:24.809 1.67x
>>
>> 4.3.3-tdm (1T) 00:12:01.843
>> 4.3.3-tdm + nedmalloc (1T) 00:07:16.468 1.65x
>>
>> 4.3.3-tdm (2T) 00:07:35.062
>> 4.3.3-tdm + nedmalloc (2T) 00:04:57.874 1.54x
>
> Wow! That is impressive.
indeed, haven't time to test it myself currently tho :-( i hope
someone can confirm this massive performance boost and that this patch
makes it into msysgit very soon. thanks for the work :-)
prev parent reply other threads:[~2009-04-03 15:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-03 13:52 [PATCH] Add custom memory allocator to MinGW and MacOS builds Marius Storm-Olsen
2009-04-03 14:20 ` Marius Storm-Olsen
2009-04-03 21:12 ` [msysGit] " Pat Thoyts
2009-04-03 23:16 ` Johannes Schindelin
2009-04-03 23:42 ` [msysGit] " Pat Thoyts
2009-04-04 5:16 ` Marius Storm-Olsen
2009-04-04 6:35 ` [msysGit] " Johannes Sixt
2009-04-05 18:43 ` Marius Storm-Olsen
2009-04-03 15:01 ` Johannes Schindelin
2009-04-03 15:50 ` Janos Laube [this message]
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