LWN: Comments on "Development statistics for the 4.13 kernel"

Development statistics for the 4.13 kernel

bvanassche — Thu, 05 Oct 2017 22:12:59 +0000

The statistics reported by my script are slightly different:
$ git log v4.12..v4.13 | sed -n 's/^ Reviewed-by: $[^<]*$<.*/\1/p' | sort | uniq -c | sort -rn | head -n30
182 Alex Deucher
150 Andy Shevchenko
128 Christoph Hellwig
90 Christian König
77 Florian Fainelli
73 Joonas Lahtinen
68 Hannes Reinecke
66 Chris Wilson
63 Laurent Pinchart
55 Geert Uytterhoeven
50 Simon Horman
49 Takashi Sakamoto
48 Scott Benesh
48 Daniel Vetter
47 Tvrtko Ursulin
47 Guenter Roeck
46 David Sterba
45 Andrew Lunn
44 Johannes Thumshirn
43 Bart Van Assche
42 Hawking Zhang
41 Maarten Lankhorst
39 Jan Kara
39 Darrick J. Wong
38 Sagi Grimberg
35 Neil Armstrong
35 Jeff Layton
33 Linus Walleij
31 Brian Foster
27 Mika Westerberg

Development statistics for the 4.13 kernel

kdave — Thu, 07 Sep 2017 11:36:26 +0000

But then hch would take the top spots as well! Here's the top 30 for 4.13:

182 Alex Deucher
127 Christoph Hellwig
89 Christian König
80 Andy Shevchenko
77 Florian Fainelli
72 Joonas Lahtinen
67 Andy Shevchenko
64 Hannes Reinecke
62 Chris Wilson
60 Laurent Pinchart
55 Geert Uytterhoeven
49 Takashi Sakamoto
48 Scott Benesh
47 Daniel Vetter
46 Simon Horman
46 David Sterba
45 Andrew Lunn
44 Tvrtko Ursulin
44 Johannes Thumshirn
42 Hawking Zhang
41 Maarten Lankhorst
39 Jan Kara
39 Darrick J. Wong
35 Neil Armstrong
35 Jeff Layton
34 Guenter Roeck
33 Sagi Grimberg
31 Linus Walleij
31 Brian Foster
27 Mika Westerberg

Development statistics for the 4.13 kernel

knobunc — Fri, 01 Sep 2017 15:35:10 +0000

It would be interesting to do a "top reviewers". Give some hard and unglamorous work some time in the spotlight.

-ben

Development statistics for the 4.13 kernel

jani — Thu, 31 Aug 2017 17:40:35 +0000

I also think it's interesting to look behind the stats presented. "The top contributor of changesets this time around was Christoph Hellwig, who made significant improvements all over the filesystem and block I/O layers." I don't think it takes anything away from Christoph's accomplisments to acknowledge that a bunch of other people were involved in getting his changes merged:

$ git log v4.12..v4.13-rc7 --author=hch@lst.de | grep "[A-Za-z-]*-by:" | grep -v hch@lst.de | sed 's/[A-Za-z-]*-by: //' | sort | uniq -c | sort -rn | head
38 Jens Axboe <axboe@kernel.dk>
30 Jeff Layton <jlayton@redhat.com>
26 Trond Myklebust <trond.myklebust@primarydata.com>
22 Darrick J. Wong <darrick.wong@oracle.com>
19 Andy Shevchenko <andriy.shevchenko@linux.intel.com>
18 Sagi Grimberg <sagi@grimberg.me>
18 Amir Goldstein <amir73il@gmail.com>
14 Jens Axboe <axboe@fb.com>
12 Thomas Gleixner <tglx@linutronix.de>
10 Martin K. Petersen <martin.petersen@oracle.com>

Plus a long tail. I think only looking at the authorship gives a rather limited view of contributions to the kernel.

Development statistics for the 4.13 kernel

deater — Thu, 31 Aug 2017 15:24:52 +0000

I thought that a report on the Reported-by: tag might be interesting because I might have a chance of making the list, but no, I'm not even in the top 15. Interestingly enough a robot is in the #1 spot.

Methodology:
git log v4.12..HEAD | grep Reported-by: | sort | uniq -c | sort -n

Development statistics for the 4.13 kernel

andy_shev — Thu, 31 Aug 2017 09:25:40 +0000

Actually yes, I liked that one that has it.

Development statistics for the 4.13 kernel

jani — Wed, 30 Aug 2017 15:49:20 +0000

I humbly repeat my request to include the review and testing stats in the development statistics. https://lwn.net/Articles/718528/

Development statistics for the 4.13 kernel

pravinkc — Wed, 30 Aug 2017 03:45:18 +0000

Does anyone of us have to do anything?

Development statistics for the 4.13 kernel

lkundrak — Tue, 29 Aug 2017 09:08:36 +0000

Well, did you need to make this one?
Did I need to comment too?

Development statistics for the 4.13 kernel

zanchey — Tue, 29 Aug 2017 00:49:33 +0000

I write in response to the conclusion of the article, and if you've got children you might recognise the enormous value of measured prose in settling them (and you).

Development statistics for the 4.13 kernel

rahvin — Mon, 28 Aug 2017 19:34:43 +0000

Did you really need to make that comment?

Development statistics for the 4.13 kernel

zanchey — Sun, 27 Aug 2017 13:21:21 +0000

I certainly wouldn't accuse this article of being boring, but reading it to a newborn has done an outstanding job of getting them to sleep.