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From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Jeff King <peff@peff.net>
Cc: git@jeffhostetler.com, git@vger.kernel.org, gitster@pobox.com,
	Jeff Hostetler <jeffhost@microsoft.com>
Subject: Re: [PATCH v1] diffcore-rename: speed up register_rename_src
Date: Thu, 20 Apr 2017 12:40:52 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.20.1704201231350.3480@virtualbox> (raw)
In-Reply-To: <20170419013214.q35jarvmk5jhqdyi@sigill.intra.peff.net>

Hi Peff,

On Tue, 18 Apr 2017, Jeff King wrote:

> On Tue, Apr 18, 2017 at 07:44:21PM +0000, git@jeffhostetler.com wrote:
> 
> > From: Jeff Hostetler <jeffhost@microsoft.com>
> > 
> > Teach register_rename_src() to see if new file pair can simply be
> > appended to the rename_src[] array before performing the binary search
> > to find the proper insertion point.
> 
> I guess your perf results show some minor improvement. But I suspect
> this is because your synthetic repo does not resemble the real world
> very much.

Please note that the synthetic test repo was added *after* coming up with
the patch, *after* performance benchmarking on a certain really big
repository (it is not hard to guess what use case we are optimizing,
right?).

In that light, I would like to register the fact that Jeff's performance
work is trying to improve a very real world, that of more than 2,000
developers in our company [*1*].

Ciao,
Johannes

Footnote *1*: https://twitter.com/GabeAul/status/846189637945110528

  parent reply	other threads:[~2017-04-20 10:41 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-18 19:44 [PATCH v1] diffcore-rename speedup git
2017-04-18 19:44 ` [PATCH v1] diffcore-rename: speed up register_rename_src git
2017-04-19  1:32   ` Jeff King
2017-04-19  2:45     ` Junio C Hamano
2017-04-19  2:56       ` Jeff King
2017-04-19  3:18         ` Jeff King
2017-04-20 14:00           ` Jeff Hostetler
2017-04-20 16:13             ` Jeff King
2017-04-20 18:08               ` Jeff Hostetler
2017-04-20 18:34                 ` Jeff King
2017-04-21  1:19                   ` Junio C Hamano
2017-04-20 10:40     ` Johannes Schindelin [this message]
2017-04-20 15:50       ` Jeff King

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