Re: Inexplicably deteriorating performance of Git repositories on Windows

On 11/23/2010 08:08 PM, Dun Peal wrote:

Hey,

We have a bunch of Windows users, unfortunately, and they're using the
latest msysGit release (Git-1.7.3.1-preview20101002).

An interesting issue we've noticed is that the Time To Complete of
their common operations start deteriorating inexplicably, and
severely, some time after the clone.

For instance, immediately after a clone, `git status` takes about
5-6s. Which is slow compared to Linux (consistent 1-2s), but still
usable (it's a BIG repo).

How many refs (tags and branches) do you have?
Are the refs packed or loose?
If they are loose, does packing them resolve the issue?
Are you using network-mounted or local storage?
What does the .git/config file look like for a user where git status
is excruciatingly slow?
Does copying the config file from a windows user to a linux user make
timings somewhat consistent between various systems?
Do older version of git perform as poorly?
How is the repository laid out (ie, are there any directories with
a ton of files in, or are they spread across multiple directories)?
How many .gitignore files are you using, and what do they look like?

However, after a reboot (of all things), `git status` latency
skyrockets to 14-15s, making the repo unusable.

That's just plain weird, and is almost certainly a system issue.

-- 
Andreas Ericsson                   andreas.ericsson@op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231

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