Re: Is cogito really this inefficient

[Russell King <rmk@arm.linux.org.uk>]

On Wed, Jul 13, 2005 at 01:28:18PM -0700, Linus Torvalds wrote:
> On Wed, 13 Jul 2005, Russell King wrote:
> > This says it all.  1min 22secs to generate a patch from a locally
> > modified but uncommitted file.
> 
> No, there's something else going on.
> 
> Most likely that something forced a total index file re-validation, and
> the time you see is every single checked out file having its SHA1
> re-computed.
> 
> Was this a recently cloned tree, or what was the last operation you did on
> that tree before that command? Something must have invalidated the index.

cg-update origin
and then I edited drivers/serial/8250.c

As discovered using:

	sh -x /usr/bin/cg-diff drivers/serial/8250.c

it appears that cg-diff does a

	git-update-cache --refresh >/dev/null

each time it's run, which is taking the bulk of the time.  Also note
that curiously, it exits with status 1.

-- 
Russell King