From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: "SZEDER Gábor" <szeder.dev@gmail.com>,
"Rafael Silva" <rafaeloliveira.cs@gmail.com>,
"Jonathan Tan" <jonathantanmy@google.com>,
"Git Mailing List" <git@vger.kernel.org>
Subject: Re: [PATCH 3/3] revision: avoid parsing with --exclude-promisor-objects
Date: Tue, 13 Apr 2021 13:22:31 -0700 [thread overview]
Message-ID: <xmqqpmyykk8o.fsf@gitster.g> (raw)
In-Reply-To: <YHVFnNvGim8Iduwq@coredump.intra.peff.net> (Jeff King's message of "Tue, 13 Apr 2021 03:17:48 -0400")
Jeff King <peff@peff.net> writes:
> ... The only reason we call parse_object() is that
> we need a "struct object" on which to set the flags. There are two
> options here:
>
> - we can look up just the object type via oid_object_info(), and then
> call the appropriate lookup_foo() function
>
> - we can call lookup_unknown_object(), which gives us an OBJ_NONE
> struct (which will get auto-converted later by object_as_type() via
> calls to lookup_commit(), etc).
>
> The first one is closer to the current code, but we do pay the price to
> look up the type for each object. The latter should be more efficient in
> CPU, though it wastes a little bit of memory (the "unknown" object
That's clever. I like it.
> 5600.5: count commits 0.37(0.37+0.00) 0.38(0.38+0.00) +2.7%
> 5600.6: count non-promisor commits 11.74(11.37+0.37) 0.04(0.03+0.00) -99.7%
>
> The improvement is particularly big in this script because _every_
> object in the newly-cloned partial repo is a promisor object. So after
> marking them all, there's nothing left to traverse.
;-).
next prev parent reply other threads:[~2021-04-13 20:22 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-03 9:04 rather slow 'git repack' in 'blob:none' partial clones SZEDER Gábor
2021-04-05 1:02 ` Rafael Silva
2021-04-07 21:17 ` Jeff King
2021-04-08 0:02 ` Jonathan Tan
2021-04-08 0:35 ` Jeff King
2021-04-12 7:09 ` Rafael Silva
2021-04-12 21:36 ` SZEDER Gábor
2021-04-12 21:49 ` Bryan Turner
2021-04-12 23:51 ` Jeff King
2021-04-12 23:47 ` Jeff King
2021-04-13 7:12 ` [PATCH 0/3] low-hanging performance fruit with promisor packs Jeff King
2021-04-13 7:15 ` [PATCH 1/3] is_promisor_object(): free tree buffer after parsing Jeff King
2021-04-13 20:17 ` Junio C Hamano
2021-04-14 5:18 ` Jeff King
2021-04-13 7:16 ` [PATCH 2/3] lookup_unknown_object(): take a repository argument Jeff King
2021-04-13 7:17 ` [PATCH 3/3] revision: avoid parsing with --exclude-promisor-objects Jeff King
2021-04-13 20:22 ` Junio C Hamano [this message]
2021-04-13 18:10 ` [PATCH 0/3] low-hanging performance fruit with promisor packs SZEDER Gábor
2021-04-14 17:14 ` Jonathan Tan
2021-04-14 19:22 ` Rafael Silva
2021-04-13 18:05 ` rather slow 'git repack' in 'blob:none' partial clones SZEDER Gábor
2021-04-14 5:14 ` Jeff King
2021-04-11 10:59 ` SZEDER Gábor
2021-04-12 7:53 ` Rafael Silva
2021-04-14 19:14 ` [PATCH 0/2] prevent `repack` to unpack and delete promisor objects Rafael Silva
2021-04-14 19:14 ` [PATCH 1/2] repack: teach --no-prune-packed to skip `git prune-packed` Rafael Silva
2021-04-14 23:50 ` Jonathan Tan
2021-04-18 14:15 ` Rafael Silva
2021-04-14 19:14 ` [PATCH 2/2] repack: avoid loosening promisor pack objects in partial clones Rafael Silva
2021-04-15 1:04 ` Jonathan Tan
2021-04-15 3:51 ` Junio C Hamano
2021-04-15 9:03 ` Jeff King
2021-04-15 9:05 ` Jeff King
2021-04-18 7:12 ` Rafael Silva
2021-04-15 18:06 ` Junio C Hamano
2021-04-18 8:40 ` Rafael Silva
2021-04-14 22:10 ` [PATCH 0/2] prevent `repack` to unpack and delete promisor objects Junio C Hamano
2021-04-15 9:15 ` Jeff King
2021-04-18 8:20 ` Rafael Silva
2021-04-18 13:57 ` [PATCH v2 0/1] " Rafael Silva
2021-04-18 13:57 ` [PATCH v2 1/1] repack: avoid loosening promisor objects in partial clones Rafael Silva
2021-04-19 19:15 ` Jonathan Tan
2021-04-21 18:54 ` Rafael Silva
2021-04-19 23:09 ` Junio C Hamano
2021-04-21 19:25 ` Rafael Silva
2021-04-21 19:32 ` [PATCH v3] " Rafael Silva
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