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From: Jeff King <peff@peff.net>
To: ZheNing Hu <adlternative@gmail.com>
Cc: Git List <git@vger.kernel.org>
Subject: Re: [hacky PATCH 0/2] speeding up trivial for-each-ref invocations
Date: Sun, 5 Sep 2021 08:49:14 -0400	[thread overview]
Message-ID: <YTS8yiYwR+eeZf4+@coredump.intra.peff.net> (raw)
In-Reply-To: <CAOLTT8RzHb5zWUm1psZRTP=iST-jP4DBmG2Zh1UPdo6z+QyHcg@mail.gmail.com>

On Sun, Sep 05, 2021 at 04:19:53PM +0800, ZheNing Hu wrote:

> > In this version there are 2 patches, tested against 'git for-each-ref
> > --format="%(objectname) %(refname)"' on a fully packed repo with 500k
> > refs:
> >
> 
> Regarding this 500k refs, is there any way I can reproduce it?

Try this in a clone of linux.git (or any other repo):

  git rev-list HEAD |
  head -500000 |
  perl -lne 'print "create refs/foo/$. $_"' |
  git update-ref --stdin

  git pack-refs --all --prune

Though I actually think for these tests that it is not important that
each ref point to a unique commit (we are not opening up the objects at
all, and just treating the oids as strings).

-Peff

  reply	other threads:[~2021-09-05 12:49 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-04 12:40 Jeff King
2021-09-04 12:41 ` [PATCH 1/2] ref-filter: hacky "streaming" mode Jeff King
2021-09-05  8:20   ` ZheNing Hu
2021-09-05 13:04     ` Jeff King
2021-09-07  5:28       ` ZheNing Hu
2021-09-07 18:01         ` Jeff King
2021-09-09 14:45           ` ZheNing Hu
2021-09-10 14:26             ` Jeff King
2021-09-15 12:27               ` ZheNing Hu
2021-09-15 14:23                 ` ZheNing Hu
2021-09-16 21:45                   ` Jeff King
2021-09-20  7:42                     ` ZheNing Hu
2021-09-16 21:31                 ` Jeff King
2021-09-05 13:15     ` Jeff King
2021-09-07  5:42       ` ZheNing Hu
2021-09-04 12:42 ` [PATCH 2/2] ref-filter: implement "quick" formats Jeff King
2021-09-05  8:20   ` ZheNing Hu
2021-09-05 13:07     ` Jeff King
2021-09-06 13:34       ` ZheNing Hu
2021-09-07 20:06       ` Junio C Hamano
2021-09-05  8:19 ` [hacky PATCH 0/2] speeding up trivial for-each-ref invocations ZheNing Hu
2021-09-05 12:49   ` Jeff King [this message]
2021-09-06 13:30     ` ZheNing Hu
2021-09-07 17:28       ` Jeff King
2021-09-09 13:20         ` ZheNing Hu
2021-09-06  6:54 ` Patrick Steinhardt

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