From: Junio C Hamano <gitster@pobox•com>
To: Jeff King <peff@peff•net>
Cc: Charles Bailey <charles@hashpling•org>, git@vger•kernel.org
Subject: Re: Fast enumeration of objects
Date: Mon, 22 Jun 2015 12:44:24 -0700 [thread overview]
Message-ID: <xmqq381jh6jr.fsf@gitster.dls.corp.google.com> (raw)
In-Reply-To: <20150622083543.GA12259@peff.net> (Jeff King's message of "Mon, 22 Jun 2015 04:35:44 -0400")
Jeff King <peff@peff•net> writes:
> ...
> So my conclusions are:
>
> 1. Yes, the pipe/parsing overhead of a separate processor really is
> measurable. That's hidden in the wall-clock time if you have
> multiple cores, but you may care more about CPU time. I still think
> the flexibility is worth it.
>
> 2. Cutting out the pipe to cat-file is worth doing, as it saves a few
> seconds. Cutting out "%(objecttype)" saves a lot, too, and is worth
> doing. We should teach "list-all-objects -v" to use cat-file's
> custom formatters (alternatively, we could just teach cat-file a
> "--batch-all-objects" option rather than add a new command).
>
> 3. We should teach cat-file a "--buffer" option to use fwrite. Even if
> we end up with "list-all-objects --format='%(objectsize)'" for this
> task, it would help all the other uses of cat-file.
All sounds very sensible.
prev parent reply other threads:[~2015-06-22 19:44 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-19 9:10 Improvements to parse-options and a new filter-objects command Charles Bailey
2015-06-19 9:10 ` [PATCH 1/3] Correct test-parse-options to handle negative ints Charles Bailey
2015-06-19 18:28 ` Junio C Hamano
2015-06-19 9:10 ` [PATCH 2/3] Move unsigned long option parsing out of pack-objects.c Charles Bailey
2015-06-19 11:03 ` Remi Galan Alfonso
2015-06-19 11:06 ` Charles Bailey
2015-06-19 17:58 ` Junio C Hamano
2015-06-19 18:39 ` Junio C Hamano
2015-06-20 15:31 ` Jakub Narębski
2015-06-19 18:47 ` Jakub Narębski
2015-06-20 16:51 ` Charles Bailey
2015-06-20 17:47 ` Junio C Hamano
2015-06-19 9:10 ` [PATCH 3/3] Add filter-objects command Charles Bailey
2015-06-19 10:10 ` Jeff King
2015-06-19 10:33 ` Charles Bailey
2015-06-19 10:52 ` Jeff King
2015-06-19 18:28 ` Junio C Hamano
2015-06-19 10:52 ` John Keeping
2015-06-19 11:04 ` Charles Bailey
2015-06-21 18:25 ` Improvements to integer option parsing Charles Bailey
2015-06-21 18:25 ` [PATCH 1/2] Correct test-parse-options to handle negative ints Charles Bailey
2015-06-21 18:25 ` [PATCH 2/2] Move unsigned long option parsing out of pack-objects.c Charles Bailey
2015-06-21 18:30 ` Charles Bailey
2015-06-22 22:03 ` Junio C Hamano
2015-06-22 22:08 ` Junio C Hamano
2015-06-22 22:09 ` Improvements to integer option parsing Junio C Hamano
2015-06-22 22:42 ` Charles Bailey
2015-06-21 19:20 ` Fast enumeration of objects Charles Bailey
2015-06-21 19:20 ` [PATCH] Add list-all-objects command Charles Bailey
2015-06-22 8:38 ` Jeff King
2015-06-22 10:33 ` Jeff King
2015-06-22 10:40 ` [PATCH 1/7] for_each_packed_object: automatically open pack index Jeff King
2015-06-22 10:40 ` [PATCH 2/7] cat-file: minor style fix in options list Jeff King
2015-06-22 10:41 ` [PATCH 3/7] cat-file: move batch_options definition to top of file Jeff King
2015-06-22 10:45 ` [PATCH 4/7] cat-file: add --buffer option Jeff King
2015-06-22 10:45 ` [PATCH 5/7] cat-file: stop returning value from batch_one_object Jeff King
2015-06-22 10:45 ` [PATCH 6/7] cat-file: split batch_one_object into two stages Jeff King
2015-06-22 10:45 ` [PATCH 7/7] cat-file: add --batch-all-objects option Jeff King
2015-06-26 6:56 ` Eric Sunshine
2015-06-26 15:48 ` Jeff King
2015-06-22 11:06 ` [PATCH 8/7] cat-file: sort and de-dup output of --batch-all-objects Jeff King
2015-06-22 22:03 ` Charles Bailey
2015-06-22 23:46 ` Jeff King
2015-06-22 21:48 ` [PATCH] Add list-all-objects command Charles Bailey
2015-06-22 21:50 ` Junio C Hamano
2015-06-22 23:50 ` Jeff King
2015-06-22 11:38 ` Charles Bailey
2015-06-22 9:57 ` Duy Nguyen
2015-06-22 10:24 ` Jeff King
2015-06-22 8:35 ` Fast enumeration of objects Jeff King
2015-06-22 19:44 ` Junio C Hamano [this message]
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