From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Duy Nguyen <pclouds@gmail.com>
Cc: Ben Peart <Ben.Peart@microsoft.com>,
Ben Peart <peartben@gmail.com>,
Git Mailing List <git@vger.kernel.org>,
Junio C Hamano <gitster@pobox.com>, Jeff King <peff@peff.net>,
Eric Sunshine <sunshine@sunshineco.com>
Subject: Re: [PATCH v3 1/3] reset: don't compute unstaged changes after reset when --quiet
Date: Tue, 23 Oct 2018 21:55:34 +0200 (DST) [thread overview]
Message-ID: <nycvar.QRO.7.76.6.1810232153120.4546@tvgsbejvaqbjf.bet> (raw)
In-Reply-To: <CACsJy8C+9f3hFxmrqAN2hi1AeBTa1yZdnwX6iJtsy_OrEfTWpQ@mail.gmail.com>
Hi Duy,
On Tue, 23 Oct 2018, Duy Nguyen wrote:
> On Tue, Oct 23, 2018 at 1:01 AM Ben Peart <Ben.Peart@microsoft.com> wrote:
> >
> > > -----Original Message-----
> > > From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
> > > Sent: Monday, October 22, 2018 4:45 PM
> > > To: Ben Peart <peartben@gmail.com>
> > > Cc: git@vger.kernel.org; gitster@pobox.com; Ben Peart
> > > <Ben.Peart@microsoft.com>; peff@peff.net; sunshine@sunshineco.com
> > > Subject: Re: [PATCH v3 1/3] reset: don't compute unstaged changes after
> > > reset when --quiet
> > >
> > > Hi Ben,
> > >
> > > On Mon, 22 Oct 2018, Ben Peart wrote:
> > >
> > > > From: Ben Peart <benpeart@microsoft.com>
> > > >
> > > > When git reset is run with the --quiet flag, don't bother finding any
> > > > additional unstaged changes as they won't be output anyway. This speeds
> > > up
> > > > the git reset command by avoiding having to lstat() every file looking for
> > > > changes that aren't going to be reported anyway.
> > > >
> > > > The savings can be significant. In a repo with 200K files "git reset"
> > > > drops from 7.16 seconds to 0.32 seconds for a savings of 96%.
> > >
> > > That's very nice!
> > >
> > > Those numbers, just out of curiosity, are they on Windows? Or on Linux?
> > >
> >
> > It's safe to assume all my numbers are on Windows. :-)
>
> It does bug me about this. Next time please mention the platform you
> tested on in the commit message. Not all platforms behave the same way
> especially when it comes to performance.
And pretty much all different testing scenarios behave differently, too.
And at some stage, we're asking for too many fries.
In other words: we always accepted performance improvements when it could
be demonstrated that they improved a certain not too uncommon scenario,
and I do not think it would make sense to change this stance now. Not
unless you can demonstrate a good reason why we should.
Ciao,
Johannes
next prev parent reply other threads:[~2018-10-23 19:55 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-17 16:40 [PATCH v1 0/2] speed up git reset Ben Peart
2018-10-17 16:40 ` [PATCH v1 1/2] reset: don't compute unstaged changes after reset when --quiet Ben Peart
2018-10-17 18:14 ` Eric Sunshine
2018-10-17 18:22 ` Jeff King
2018-10-18 3:40 ` Junio C Hamano
2018-10-18 6:36 ` Jeff King
2018-10-18 18:15 ` Ben Peart
2018-10-18 18:26 ` Duy Nguyen
2018-10-18 19:03 ` Ben Peart
2018-10-19 0:34 ` Junio C Hamano
2018-10-17 16:40 ` [PATCH v1 2/2] reset: add new reset.quietDefault config setting Ben Peart
2018-10-17 18:19 ` Eric Sunshine
2018-10-17 18:23 ` Jeff King
2018-10-23 9:13 ` Ævar Arnfjörð Bjarmason
2018-10-23 18:11 ` Ben Peart
2018-10-23 20:02 ` Jeff King
2018-10-23 20:03 ` Ævar Arnfjörð Bjarmason
2018-10-24 15:48 ` Recommended configurations (was Re: [PATCH v1 2/2] reset: add new reset.quietDefault config setting) Derrick Stolee
2018-10-24 23:58 ` Jeff King
2018-10-25 4:09 ` Junio C Hamano
2018-10-19 16:12 ` [PATCH v2 0/3] speed up git reset Ben Peart
2018-10-19 16:12 ` [PATCH v2 1/3] reset: don't compute unstaged changes after reset when --quiet Ben Peart
2018-10-19 16:12 ` [PATCH v2 2/3] reset: add new reset.quiet config setting Ben Peart
2018-10-19 16:36 ` Eric Sunshine
2018-10-19 16:46 ` Jeff King
2018-10-19 17:10 ` Eric Sunshine
2018-10-19 17:11 ` Jeff King
2018-10-19 17:23 ` Ben Peart
2018-10-19 19:08 ` Jeff King
2018-10-22 5:04 ` Junio C Hamano
2018-10-19 17:11 ` Ben Peart
2018-10-19 16:12 ` [PATCH v2 3/3] reset: warn when refresh_index() takes more than 2 seconds Ben Peart
2018-10-22 13:18 ` [PATCH v3 0/3] speed up git reset Ben Peart
2018-10-22 13:18 ` [PATCH v3 1/3] reset: don't compute unstaged changes after reset when --quiet Ben Peart
2018-10-22 20:44 ` Johannes Schindelin
2018-10-22 22:07 ` Ben Peart
2018-10-23 8:53 ` Johannes Schindelin
2018-10-23 15:46 ` Duy Nguyen
2018-10-23 19:55 ` Johannes Schindelin [this message]
2018-10-22 13:18 ` [PATCH v3 2/3] reset: add new reset.quiet config setting Ben Peart
2018-10-22 14:45 ` Duy Nguyen
2018-10-23 18:47 ` Ben Peart
2018-10-24 2:56 ` Junio C Hamano
2018-10-24 7:21 ` Junio C Hamano
2018-10-24 14:54 ` Duy Nguyen
2018-10-25 1:12 ` Junio C Hamano
2018-10-24 14:49 ` Duy Nguyen
2018-10-22 19:13 ` Ramsay Jones
2018-10-22 20:06 ` Jeff King
2018-10-23 17:31 ` Ben Peart
2018-10-23 17:35 ` Jeff King
2018-10-22 13:18 ` [PATCH v3 3/3] reset: warn when refresh_index() takes more than 2 seconds Ben Peart
2018-10-23 0:23 ` Junio C Hamano
2018-10-23 17:12 ` Ben Peart
2018-10-23 19:04 ` [PATCH v4 0/3] speed up git reset Ben Peart
2018-10-23 19:04 ` [PATCH v4 1/3] reset: don't compute unstaged changes after reset when --quiet Ben Peart
2018-10-23 19:04 ` [PATCH v4 2/3] reset: add new reset.quiet config setting Ben Peart
2018-10-24 0:39 ` Ramsay Jones
2018-10-25 4:56 ` Junio C Hamano
2018-10-25 9:26 ` Junio C Hamano
2018-10-25 13:26 ` Ben Peart
2018-10-25 17:04 ` Ramsay Jones
2018-10-23 19:04 ` [PATCH v4 3/3] reset: warn when refresh_index() takes more than 2 seconds Ben Peart
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