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From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: git@vger.kernel.org, Stefan Beller <sbeller@google.com>
Subject: Re: [PATCH v2 0/6] reuse on-disk deltas for fetches with bitmaps
Date: Tue, 21 Aug 2018 12:34:18 -0700	[thread overview]
Message-ID: <xmqqo9dv8qf9.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20180821190622.GA30301@sigill.intra.peff.net> (Jeff King's message of "Tue, 21 Aug 2018 15:06:22 -0400")

Jeff King <peff@peff.net> writes:

> On Fri, Aug 17, 2018 at 04:54:27PM -0400, Jeff King wrote:
>
>> This series more aggressively reuses on-disk deltas to serve fetches
>> when reachability bitmaps tell us a more complete picture of what the
>> client has. That saves server CPU and results in smaller packs. See the
>> final patch for numbers and more discussion.
>
> Here's a v2, with just a few cosmetic fixes to address the comments on
> v1 (range-diff below).
>
>   [1/6]: t/perf: factor boilerplate out of test_perf
>   [2/6]: t/perf: factor out percent calculations
>   [3/6]: t/perf: add infrastructure for measuring sizes
>   [4/6]: t/perf: add perf tests for fetches from a bitmapped server
>   [5/6]: pack-bitmap: save "have" bitmap from walk
>   [6/6]: pack-objects: reuse on-disk deltas for thin "have" objects

Thanks.

> 1:  89fa0ec8d8 ! 1:  3e1b94d7d6 pack-bitmap: save "have" bitmap from walk
>     @@ -69,6 +69,8 @@
>      +
>      +	if (!bitmap_git)
>      +		return 0; /* no bitmap loaded */
>     ++	if (!bitmap_git->result)
>     ++		BUG("failed to perform bitmap walk before querying");
>      +	if (!bitmap_git->haves)
>      +		return 0; /* walk had no "haves" */
>      +

The first four are unchanged, so this actually compares 5/6 of the
previous and the current one.  Omitting the four identical ones
makes sense, but I wonder if it makes it easier to see if we keep
the number-label of the surviving patches.

> 2:  f7ca0d59e3 ! 2:  b8b2416aac pack-objects: reuse on-disk deltas for thin "have" objects


  parent reply	other threads:[~2018-08-21 19:34 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-17 20:54 [PATCH 0/6] reuse on-disk deltas for fetches with bitmaps Jeff King
2018-08-17 20:55 ` [PATCH 1/6] t/perf: factor boilerplate out of test_perf Jeff King
2018-08-17 20:55 ` [PATCH 2/6] t/perf: factor out percent calculations Jeff King
2018-08-17 20:56 ` [PATCH 3/6] t/perf: add infrastructure for measuring sizes Jeff King
2018-08-17 20:57 ` [PATCH 4/6] t/perf: add perf tests for fetches from a bitmapped server Jeff King
2018-08-17 20:59 ` [PATCH 5/6] pack-bitmap: save "have" bitmap from walk Jeff King
2018-08-17 22:39   ` Stefan Beller
2018-08-17 22:45     ` Jeff King
2018-08-17 21:06 ` [PATCH 6/6] pack-objects: reuse on-disk deltas for thin "have" objects Jeff King
2018-08-17 22:57   ` Stefan Beller
2018-08-17 23:32     ` Jeff King
2018-08-20 21:03   ` Junio C Hamano
2018-08-20 21:42     ` Jeff King
2018-08-21 19:06 ` [PATCH v2 0/6] reuse on-disk deltas for fetches with bitmaps Jeff King
2018-08-21 19:08   ` Jeff King
2018-08-21 19:34   ` Junio C Hamano [this message]
2018-08-21 19:51     ` Jeff King

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