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Re: [PATCH] md5: accepts a new --threads option
From: |
Pádraig Brady |
Subject: |
Re: [PATCH] md5: accepts a new --threads option |
Date: |
Thu, 22 Oct 2009 12:09:05 +0100 |
User-agent: |
Thunderbird 2.0.0.6 (X11/20071008) |
Jim Meyering wrote:
> Pádraig Brady wrote:
>
>> p.s. I'll look at bypassing stdio on input to see
>> if I can get at least the 2% back
>
> IMHO, even if it did, it would not be worth it.
Right, a quick test here shows only a 0.8% gain from
bypassing stdio. However I also noticed that the
digest routines in gnulib do fread(4096).
Bumping that up to 32KiB gives a 3% boost.
That would be increased even more if more efficient
checksumming routines are used (which is on the horizon).
Note the coreutils min was bumped to 32KiB recently:
http://git.savannah.gnu.org/gitweb/?p=coreutils.git;a=commit;h=55efc5f
Does anyone have any objections to increasing
the stack requirement by 28672 bytes?
cheers,
Pádraig.
- Re: [PATCH] md5: accepts a new --threads option, (continued)
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/20
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/20
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/21
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/21
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/21
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/21
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/21
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/21
- RE: [PATCH] md5: accepts a new --threads option, Voelker, Bernhard, 2009/10/21
- Re: [PATCH] md5: accepts a new --threads option,
Pádraig Brady <=
- Re: [PATCH] md5: accepts a new --threads option, Eric Blake, 2009/10/22
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/22
- Re: [PATCH] md5: accepts a new --threads option, Paolo Bonzini, 2009/10/22
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Jim Meyering, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Paolo Bonzini, 2009/10/23
- Re: [PATCH] md5: accepts a new --threads option, Pádraig Brady, 2009/10/23