Re: git status: small difference between stating whole repository and small subdirectory

From: Piotr Krukowiecki <piotr.krukowiecki@gmail.com>
Date: Feb 15, 2012, 15:14 UTC
Message-ID: <CAA01CsoW-32kOtD2g==2FDcYaxfSVD4Xdy1bYG_wJBWDNept4A@mail.gmail.com>
In-Reply-To: <CACsJy8DBG2A91=ppCOC6Hf6aYM2soUXXdsY0GU9hr2xqjj4RYA@mail.gmail.com>

On Wed, Feb 15, 2012 at 12:01 PM, Nguyen Thai Ngoc Duy <pclouds@gmail.com> wrote:

Show 18 quoted lines

> On Wed, Feb 15, 2012 at 3:57 PM, Piotr Krukowiecki
> <piotr.krukowiecki@gmail.com> wrote:
>> Indeed, after gc the times went down:
>> 10s -> 2.3s (subdirectory)
>> 17s -> 9.5s (whole repo)
>>
>> 2 seconds is much better and I'd say acceptable for me. But my questions are:
>> - why is it so slow with not packed repo?
>> - can it be faster without repacking?
>
> gc does more than just repacking. If you still have the un-gc'd repo,
> Try these commands one by one, and time "git status" after each:
>
>  - git pack-refs --all --prune
>  - git reflog expire --all
>  - git repack -d -l
>  - git prune --expire
>  - git rerere gc

It will take some time but hopefully I'll have the stats for tomorrow.

> I'd be more interested in why auto-gc does not kick in (or whther it should).

I don't have any specific options set, so default values should be used.

I'm using git-svn though, so my workflow looks like this:
   git svn fetch + git svn rebase
   ... git operations like commit, cherry-pick, rebase ...
   git svn dcommit

Not sure if that matters. I remember that I've seen auto-gc being run several times in the past - I think after svn fetch/rebase.

I'm also using git-new-workdir and have 2 extra workdirs.

Show 6 quoted lines

>> - even with packed repo, the time on small subdirectory is much higher
>> than I'd expect given time on whole repo and subdirectory size - why?
>
> Hard to say without measuring. I just notice that I missed your mail
> with profiling results. I will have a look, but just in case, is the
> repository publicly available?

Unfortunately it's not public. I can do some measuring if someone tells me what to do.

-- 
Piotr Krukowiecki