Re: git-fetch per-repository speed issues

From: Linus Torvalds <torvalds@osdl.org>
Date: Jul 4, 2006, 04:19 UTC
Message-ID: <Pine.LNX.4.64.0607032115340.12404@g5.osdl.org>
In-Reply-To: <1151985747.4723.102.camel@neko.keithp.com>

On Mon, 3 Jul 2006, Keith Packard wrote:

> 
> Yeah, it says that only once. And, it runs the fetch-pack in about .5
> seconds. And, now the whole process completes in 4.7 seconds; perhaps
> the remote server is less loaded than earlier this afternoon?

Well, that's still strange. What takes 4.2 seconds then?

Show 5 quoted lines

> > And then it should leave a "fetch.trace" file in your working directory, 
> > which should show where that _one_ thing spends its time.
> 
> It looks boring to me and spent 0.55 from start to finish. I can send
> along the whole trace if you have an acute desire to peer at it.

No, the 0.5 seconds is what I _expected_. There's something strange going on in your git fetch that it takes any longer than that.

Can you instrument your "git-fetch.sh" script (just add random

	(echo $LINENO ; date) >&2

lines all over) to see what is so expensive?

That fetch-pack really should be the most expensive part by far (and half a second sounds right), but it clearly isn't. At 4.7s, your fetch is still taking about ten times longer than it _should_.

		Linus