Re: git-fetch per-repository speed issues

From: Keith Packard <keithp@keithp.com>
Date: Jul 4, 2006, 05:05 UTC
Message-ID: <1151989503.4723.126.camel@neko.keithp.com>
In-Reply-To: <Pine.LNX.4.64.0607032115340.12404@g5.osdl.org>

On Mon, 2006-07-03 at 21:19 -0700, Linus Torvalds wrote:

Show 5 quoted lines

> Can you instrument your "git-fetch.sh" script (just add random
> 
> 	(echo $LINENO ; date) >&2
> 
> lines all over) to see what is so expensive?

5 Start: 21:59:01.584648000 66 After args: 21:59:01.605987000 248 fetch_main() start: 21:59:02.408559000 339 fetch_main() before fetch-pack: 21:59:03.293228000 387 fetch_main() done: 21:59:04.784388000 422 After tag following: 21:59:05.311439000 438 All done: 21:59:05.315338000

fetch-pack itself took 0.421 seconds (measured with time(1)).

Looks like the bulk of the time here is caused by simple shell processing overhead, some of which scales with the number of heads and tags to track.

-- 
keith.packard@intel.com