From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 12 Sep 2016 17:33:11 GMT
Subject: Re: [PATCH 1/2 v5] pack-objects: respect --local/--honor-pack-keep/--incremental when bitmap is in use
Message-ID: <xmqqy42x2fc8.fsf@gitster.mtv.corp.google.com>
In-Reply-To: <20160910145738.x6ihp2gqzpk7dbi3@teco.navytux.spb.ru>

Kirill Smelkov <kirr@nexedi.com> writes:

> On Thu, Aug 18, 2016 at 01:52:22PM -0400, Jeff King wrote:
> > 
> > Good to know there is no regression. It is curious that there is a
> > slight _improvement_ across the board. Do we have an explanation for
> > that? It seems odd that noise would be so consistent.
>
> Yes, I too thought it and it turned out to be t/perf/run does not copy
> config.mak.autogen & friends to build/ and I'm using autoconf with
> CFLAGS="-march=native -O3 ..."
>
> Junio, I could not resist to the following:
> ...
> With corrected t/perf/run the timings are more realistic - e.g. 3
> consecutive runs of `./run 56dfeb62 . ./p5310-pack-bitmaps.sh`:

Wow, that's what I call an exchange with quality during a review ;-)

Thanks for the curiosity and digging it to the root cause of the
anomaly.  Some GNUism/bashism in the way copying is spelled in the
patch bothers me, but that is easily fixable.

Thanks.