X Census (for 1.9)
Topic’s name is a funny (and friendly) devotion to GNOME Census. So let’s take a look at some numbers from the time Xorg 1.9 was in development - raw data is here.
Would be unfair to measure only the work that happened e.g. in X server or in the drivers being developed and come up with the statistics about “who developed X”. X and X development community are quite extensive and don’t concern only “graphics” related, i.e., pixel information that appears on your display screen. This is a very common mistake.
X does input device event processing, device keys mapping (e.g. keyboard), pixel rasterization, output and input devices hotplug and configuration, devices and user session pairing, (different) 2D/3D graphics implementation, frame-buffer content management, X application and session security, application memory resources testing, analysis and debugging and etc. So it’s far from just pixel showing up on screen.
X is a generic graphical system. I prefer to see X as an implementation that doesn’t handle (or should not) system-level resources like memory or frame-buffer content. Other people see a bit differently. Given so, I divided all X development in the following groups, that you’ll see below as bold. Statistics were generated from the time people were working on 1.9 Xorg (02 Apr to 20 Aug):
The proto set of repositories represents the X11 core protocol description together with its extensions. The implementation of X11 and extensions to be used by clients are inside lib and xcb. lib also contains some few libraries to be used within xserver. xserver contains the server implementation of X. So here are the numbers for X implementation (xserver, proto, lib and xcb repositories):
Processed 874 csets from 74 developers 59 employers found A total of 291730 lines added, 155222 removed (delta 136508)
Developers with the most changesets Alan Coopersmith 134 (15.3%) Jamey Sharp 106 (12.1%) Gaetan Nadon 84 (9.6%) Keith Packard 66 (7.6%) Tiago Vignatti 55 (6.3%) Peter Hutterer 54 (6.2%) Mikhail Gusarov 41 (4.7%) Jeremy Huddleston 38 (4.3%) Matt Dew 21 (2.4%) Fernando Carrijo 19 (2.2%)
Developers with the most changed lines Matt Dew 172273 (53.2%) Alan Coopersmith 75739 (23.4%) Gaetan Nadon 13199 (4.1%) Mikhail Gusarov 8979 (2.8%) Keith Packard 6438 (2.0%) Jeremy Huddleston 5750 (1.8%) Jamey Sharp 5535 (1.7%) Tiago Vignatti 5227 (1.6%) Marko Myllynen 5154 (1.6%) Yaakov Selkowitz 3614 (1.1%)
Developers with the most lines removed Marko Myllynen 4729 (3.0%) Tiago Vignatti 3922 (2.5%) Mikhail Gusarov 3670 (2.4%) Yaakov Selkowitz 3523 (2.3%) Josh Triplett 3141 (2.0%) Adam Jackson 2521 (1.6%) Jamey Sharp 2036 (1.3%) Daniel Stone 312 (0.2%) Fernando Carrijo 221 (0.1%) Pierre-Loup A. Griffais 91 (0.1%)
Developers with the most signoffs (total 1007) Keith Packard 184 (18.3%) Alan Coopersmith 155 (15.4%) Gaetan Nadon 105 (10.4%) Jamey Sharp 103 (10.2%) Peter Hutterer 88 (8.7%) Tiago Vignatti 56 (5.6%) Mikhail Gusarov 42 (4.2%) Jeremy Huddleston 39 (3.9%) Fernando Carrijo 19 (1.9%) Adam Jackson 18 (1.8%)
Developers with the most reviews (total 530) Keith Packard 74 (14.0%) Peter Hutterer 63 (11.9%) Jamey Sharp 62 (11.7%) Alan Coopersmith 46 (8.7%) Adam Jackson 44 (8.3%) Julien Cristau 34 (6.4%) Dan Nicholson 30 (5.7%) Daniel Stone 23 (4.3%) Alex Deucher 21 (4.0%) Tiago Vignatti 18 (3.4%)
Developers with the most test credits (total 42) Gaetan Nadon 11 (26.2%) Tiago Vignatti 8 (19.0%) Jeremy Huddleston 2 (4.8%) Colin Harrison 2 (4.8%) Richard Barnette 2 (4.8%) Eric Anholt 2 (4.8%) Keith Packard 1 (2.4%) Peter Hutterer 1 (2.4%) Dan Nicholson 1 (2.4%) Dave Airlie 1 (2.4%)
Developers who gave the most tested-by credits (total 42) Jamey Sharp 11 (26.2%) Alan Coopersmith 9 (21.4%) Keith Packard 8 (19.0%) Tiago Vignatti 2 (4.8%) Yaakov Selkowitz 2 (4.8%) Kristian Høgsberg 2 (4.8%) Jon TURNEY 2 (4.8%) Peter Hutterer 1 (2.4%) Mikhail Gusarov 1 (2.4%) Pierre-Loup A. Griffais 1 (2.4%)
Developers with the most report credits (total 13) Richard Barnette 2 (15.4%) Jamey Sharp 1 (7.7%) Dave Airlie 1 (7.7%) Robert Hooker 1 (7.7%) Fabio Pedretti 1 (7.7%) Julien Cristau 1 (7.7%) Matt Turner 1 (7.7%) Kalle Olavi Niemitalo 1 (7.7%) Chris Ball 1 (7.7%) 邓逸昕 1 (7.7%)
Developers who gave the most report credits (total 13) Julien Cristau 3 (23.1%) Tiago Vignatti 2 (15.4%) Peter Hutterer 2 (15.4%) Jamey Sharp 1 (7.7%) Dave Airlie 1 (7.7%) Alan Coopersmith 1 (7.7%) Chris Wilson 1 (7.7%) Michel Dänzer 1 (7.7%) Pauli Nieminen 1 (7.7%)
Top changeset contributors by employer Oracle 135 (15.4%) jamey@minilop.net 106 (12.1%) Intel 89 (10.2%) Red Hat 87 (10.0%) memsize@videotron.ca 84 (9.6%) Nokia 75 (8.6%) dottedmag@dottedmag.net 41 (4.7%) Apple 38 (4.3%) matt@osource.org 21 (2.4%) fcarrijo@yahoo.com.br 19 (2.2%)
Top lines changed by employer matt@osource.org 172273 (53.2%) Oracle 77967 (24.1%) memsize@videotron.ca 15840 (4.9%) Red Hat 9684 (3.0%) dottedmag@dottedmag.net 9029 (2.8%) Intel 7898 (2.4%) Apple 6162 (1.9%) jamey@minilop.net 5986 (1.8%) Nokia 5548 (1.7%) yselkowitz@users.sourceforge.net 3652 (1.1%)
Employers with the most signoffs (total 1007) Intel 207 (20.6%) Oracle 155 (15.4%) Red Hat 119 (11.8%) memsize@videotron.ca 105 (10.4%) jamey@minilop.net 103 (10.2%) Nokia 78 (7.7%) dottedmag@dottedmag.net 42 (4.2%) Apple 39 (3.9%) fcarrijo@yahoo.com.br 19 (1.9%) yselkowitz@users.sourceforge.net 17 (1.7%)
X drivers, although decreasing in functionality with the time, they still touching kernel and system-level tasks. And that’s why I prefer see those separated from the rest of X implementation. The numbers of development of X input drivers and input event processing tools (xf86-input-*, xkbcomp, xkeyboard-config repositories):
Processed 285 csets from 28 developers 24 employers found A total of 20679 lines added, 17716 removed (delta 2963)
Developers with the most changesets Gaetan Nadon 115 (40.4%) Peter Hutterer 62 (21.8%) Sergey V. Udaltsov 45 (15.8%) Chris Bagwell 7 (2.5%) Daniel Stone 7 (2.5%) Stephan Hilb 5 (1.8%) Simon Thum 4 (1.4%) Adam Jackson 3 (1.1%) Julien Cristau 3 (1.1%) Oliver McFadden 3 (1.1%)
Developers with the most changed lines Sergey V. Udaltsov 17613 (74.3%) Gaetan Nadon 3096 (13.1%) Peter Hutterer 1024 (4.3%) Stephan Hilb 479 (2.0%) Daniel Knittl-Frank 272 (1.1%) Simon Thum 189 (0.8%) Daniel Stone 152 (0.6%) Chris Bagwell 81 (0.3%) Michel Dänzer 66 (0.3%) Patrick Curran 46 (0.2%)
Developers with the most lines removed Gaetan Nadon 2244 (12.7%) Peter Hutterer 206 (1.2%) Fernando Carrijo 10 (0.1%) Alan Coopersmith 7 (0.0%) Julien Cristau 2 (0.0%) Paulo Ricardo Zanoni 1 (0.0%)
Developers with the most signoffs (total 238) Gaetan Nadon 115 (48.3%) Peter Hutterer 79 (33.2%) Daniel Stone 9 (3.8%) Chris Bagwell 7 (2.9%) Alan Coopersmith 6 (2.5%) Fernando Carrijo 3 (1.3%) Oliver McFadden 3 (1.3%) Bartosz Brachaczek 2 (0.8%) Adam Jackson 2 (0.8%) Ævar Arnfjörð Bjarmason 2 (0.8%)
Developers with the most reviews (total 52) Rémi Cardona 14 (26.9%) Fernando Carrijo 9 (17.3%) Jamey Sharp 9 (17.3%) Peter Hutterer 8 (15.4%) Alan Coopersmith 4 (7.7%) Dan Nicholson 3 (5.8%) Gaetan Nadon 1 (1.9%) Simon Thum 1 (1.9%) Julien Cristau 1 (1.9%) Magnus Kessler 1 (1.9%)
Developers with the most test credits (total 5) Peter Hutterer 2 (40.0%) Bartek Iwaniec 2 (40.0%) Magnus Kessler 1 (20.0%)
Developers who gave the most tested-by credits (total 5) Bartosz Brachaczek 2 (40.0%) Peter Hutterer 1 (20.0%) Chris Bagwell 1 (20.0%) Patrick Curran 1 (20.0%)
Developers with the most report credits (total 3) Peter Hutterer 1 (33.3%) Julien Cristau 1 (33.3%) Gabor Z. Papp 1 (33.3%)
Developers who gave the most report credits (total 3) Gaetan Nadon 2 (66.7%) Gabor Z. Papp 1 (33.3%)
Top changeset contributors by employer memsize@videotron.ca 115 (40.4%) Red Hat 65 (22.8%) svu@gnome.org 45 (15.8%) daniel@fooishbar.org 7 (2.5%) chris@cnpbagwell.com 7 (2.5%) Oracle 5 (1.8%) stephan@ecshi.net 5 (1.8%) simon.thum@gmx.de 4 (1.4%) VMWare 4 (1.4%) Nokia 3 (1.1%)
Top lines changed by employer svu@gnome.org 17683 (74.6%) memsize@videotron.ca 3304 (13.9%) Red Hat 1273 (5.4%) stephan@ecshi.net 479 (2.0%) knittl89+git@googlemail.com 272 (1.1%) simon.thum@gmx.de 189 (0.8%) daniel@fooishbar.org 181 (0.8%) chris@cnpbagwell.com 81 (0.3%) VMWare 67 (0.3%) pjcurran@wisc.edu 46 (0.2%)
Employers with the most signoffs (total 238) memsize@videotron.ca 115 (48.3%) Red Hat 81 (34.0%) daniel@fooishbar.org 9 (3.8%) chris@cnpbagwell.com 7 (2.9%) Oracle 6 (2.5%) Nokia 3 (1.3%) fcarrijo@yahoo.com.br 3 (1.3%) simon.thum@gmx.de 2 (0.8%) avarab@gmail.com 2 (0.8%) b.brachaczek@gmail.com 2 (0.8%)
for userspace video drivers (libdrm, mesa and all xf86-video-*):
Processed 5608 csets from 107 developers 84 employers found A total of 528511 lines added, 1345893 removed (delta -817382)
Developers with the most changesets Brian Paul 599 (10.7%) Eric Anholt 597 (10.6%) Gaetan Nadon 431 (7.7%) Vinson Lee 426 (7.6%) Marek Olšák 415 (7.4%) José Fonseca 357 (6.4%) Kenneth Graunke 326 (5.8%) Ian Romanick 321 (5.7%) Carl Worth 233 (4.2%) Chris Wilson 208 (3.7%)
Developers with the most changed lines Eric Anholt 957175 (56.3%) Jeremy Huddleston 146459 (8.6%) Kenneth Graunke 58744 (3.5%) Jakob Bornecrantz 46941 (2.8%) xgi0007 37147 (2.2%) Brian Paul 36067 (2.1%) Carl Worth 25201 (1.5%) Jerome Glisse 22808 (1.3%) Kristian Høgsberg 20469 (1.2%) José Fonseca 18998 (1.1%)
Developers with the most lines removed Eric Anholt 930476 (69.1%) Jakob Bornecrantz 37952 (2.8%) Kristian Høgsberg 6935 (0.5%) Keith Whitwell 3829 (0.3%) Gaetan Nadon 3113 (0.2%) Daniel Vetter 956 (0.1%) Chia-I Wu 451 (0.0%) George Sapountzis 269 (0.0%) Owain Ainsworth 58 (0.0%) Joakim Sindholt 26 (0.0%)
Developers with the most signoffs (total 926) Gaetan Nadon 363 (39.2%) Chris Wilson 186 (20.1%) Jerome Glisse 50 (5.4%) Dave Airlie 42 (4.5%) Daniel Vetter 37 (4.0%) Brian Paul 27 (2.9%) Alex Deucher 22 (2.4%) Jeremy Huddleston 18 (1.9%) Adam Jackson 16 (1.7%) José Fonseca 14 (1.5%)
Developers with the most reviews (total 24) Alan Coopersmith 6 (25.0%) Rémi Cardona 4 (16.7%) Ian Romanick 2 (8.3%) Eric Anholt 2 (8.3%) Corbin Simpson 2 (8.3%) George Sapountzis 2 (8.3%) Gaetan Nadon 1 (4.2%) Chris Wilson 1 (4.2%) Adam Jackson 1 (4.2%) José Fonseca 1 (4.2%)
Developers with the most test credits (total 11) Nick Bowler 2 (18.2%) Calvin Walton 2 (18.2%) Aaron Plattner 1 (9.1%) Marek Olšák 1 (9.1%) Tom Fogal 1 (9.1%) Brian Rogers 1 (9.1%) Arkadiusz Miśkiewicz 1 (9.1%) Krzysztof Halasa 1 (9.1%) Sven Arvidsson 1 (9.1%)
Developers who gave the most tested-by credits (total 11) Daniel Vetter 5 (45.5%) Chris Wilson 2 (18.2%) Dan Nicholson 1 (9.1%) Marcin Slusarz 1 (9.1%) Francisco Jerez 1 (9.1%) Tom Stellard 1 (9.1%)
Developers with the most report credits (total 17) Aaron Plattner 1 (5.9%) Brian Rogers 1 (5.9%) Arkadiusz Miśkiewicz 1 (5.9%) Julien Cristau 1 (5.9%) Kenneth Graunke 1 (5.9%) Thomas Bächler 1 (5.9%) Niels Ole Salscheider 1 (5.9%) Roy Spliet 1 (5.9%) Gianluca Anzolin 1 (5.9%) Sergey Samokhin 1 (5.9%)
Developers who gave the most report credits (total 17) Chris Wilson 11 (64.7%) Marek Olšák 2 (11.8%) Julien Cristau 1 (5.9%) Ian Romanick 1 (5.9%) Gaetan Nadon 1 (5.9%) Maarten Maathuis 1 (5.9%)
Top changeset contributors by employer VMWare 1870 (33.3%) Intel 1552 (27.7%) memsize@videotron.ca 431 (7.7%) maraeo@gmail.com 415 (7.4%) kenneth@whitecape.org 326 (5.8%) LunarG 195 (3.5%) Red Hat 183 (3.3%) luca@luca-barbieri.com 127 (2.3%) mostawesomedude@gmail.com 72 (1.3%) AMD 64 (1.1%)
Top lines changed by employer Intel 1057613 (62.3%) Apple 238512 (14.0%) VMWare 173210 (10.2%) kenneth@whitecape.org 67387 (4.0%) Red Hat 47856 (2.8%) xgi0007@linux.site 37148 (2.2%) LunarG 29790 (1.8%) maraeo@gmail.com 15014 (0.9%) memsize@videotron.ca 9531 (0.6%) luca@luca-barbieri.com 6345 (0.4%)
Employers with the most signoffs (total 926) memsize@videotron.ca 363 (39.2%) Intel 210 (22.7%) Red Hat 110 (11.9%) VMWare 58 (6.3%) daniel.vetter@ffwll.ch 36 (3.9%) AMD 22 (2.4%) Apple 18 (1.9%) Oracle 12 (1.3%) maraeo@gmail.com 11 (1.2%) NVidia 11 (1.2%)
Pixman library (pixman) is a special one because can be used inside X and for other components on the system like cairo. It’s used for pixel manipulation, e.g. fast path to get advantages of CPU features:
Processed 78 csets from 8 developers 8 employers found A total of 3088 lines added, 1270 removed (delta 1818)
Developers with the most changesets Søren Sandmann Pedersen 54 (69.2%) Siarhei Siamashka 9 (11.5%) M Joonas Pihlaja 6 (7.7%) Jeff Muizelaar 3 (3.8%) Andrea Canciani 2 (2.6%) Brad Smith 1 (1.3%) Marek Vasut 1 (1.3%) Siddharth Agarwal 1 (1.3%)
Developers with the most changed lines Søren Sandmann Pedersen 2207 (64.7%) Siarhei Siamashka 462 (13.6%) M Joonas Pihlaja 185 (5.4%) Andrea Canciani 119 (3.5%) Marek Vasut 69 (2.0%) Brad Smith 24 (0.7%) Jeff Muizelaar 20 (0.6%) Siddharth Agarwal 2 (0.1%)
Developers with the most lines removed
Developers with the most signoffs (total 5) Egor Starkov 1 (20.0%) Rami Ylimaki 1 (20.0%) Jeff Muizelaar 1 (20.0%) Marek Vasut 1 (20.0%) Siarhei Siamashka 1 (20.0%)
Developers with the most reviews (total 0)
Developers with the most test credits (total 0)
Developers who gave the most tested-by credits (total 0)
Developers with the most report credits (total 0)
Developers who gave the most report credits (total 0)
Top changeset contributors by employer Red Hat 54 (69.2%) Nokia 9 (11.5%) jpihlaja@cc.helsinki.fi 6 (7.7%) jmuizelaar@mozilla.com 3 (3.8%) ranma42@gmail.com 2 (2.6%) brad@comstyle.com 1 (1.3%) sid.bugzilla@gmail.com 1 (1.3%) marek.vasut@gmail.com 1 (1.3%)
Top lines changed by employer Red Hat 2320 (68.1%) Nokia 666 (19.5%) jpihlaja@cc.helsinki.fi 185 (5.4%) ranma42@gmail.com 123 (3.6%) marek.vasut@gmail.com 69 (2.0%) brad@comstyle.com 24 (0.7%) jmuizelaar@mozilla.com 20 (0.6%) sid.bugzilla@gmail.com 2 (0.1%)
Employers with the most signoffs (total 5) Nokia 3 (60.0%) marek.vasut@gmail.com 1 (20.0%) jmuizelaar@mozilla.com 1 (20.0%)
A very important work for X11 comformance testing is XTS, that was broken for while and now is working again:
Processed 41 csets from 4 developers 4 employers found A total of 2244 lines added, 4078 removed (delta -1834)
Developers with the most changesets Peter Hutterer 17 (41.5%) Aaron Plattner 12 (29.3%) Dan Nicholson 9 (22.0%) Jon TURNEY 2 (4.9%)
Developers with the most changed lines Aaron Plattner 3854 (74.1%) Peter Hutterer 245 (4.7%) Dan Nicholson 141 (2.7%) Jon TURNEY 5 (0.1%)
Developers with the most lines removed Aaron Plattner 2000 (49.0%) Dan Nicholson 1 (0.0%)
Developers with the most signoffs (total 42) Peter Hutterer 19 (45.2%) Aaron Plattner 12 (28.6%) Dan Nicholson 9 (21.4%) Jon TURNEY 2 (4.8%)
Developers with the most reviews (total 10) Dan Nicholson 7 (70.0%) Peter Hutterer 3 (30.0%)
Developers with the most test credits (total 0)
Developers who gave the most tested-by credits (total 0)
Developers with the most report credits (total 0)
Developers who gave the most report credits (total 0)
Top changeset contributors by employer Red Hat 17 (41.5%) NVidia 12 (29.3%) dbn.lists@gmail.com 9 (22.0%) jon.turney@dronecode.org.uk 2 (4.9%)
Top lines changed by employer NVidia 4726 (90.9%) Red Hat 245 (4.7%) dbn.lists@gmail.com 225 (4.3%) jon.turney@dronecode.org.uk 5 (0.1%)
Employers with the most signoffs (total 42) Red Hat 19 (45.2%) NVidia 12 (28.6%) dbn.lists@gmail.com 9 (21.4%) jon.turney@dronecode.org.uk 2 (4.8%)
X documentation (doc repository):
Processed 22 csets from 6 developers 6 employers found A total of 315 lines added, 45930 removed (delta -45615)
Developers with the most changesets Alan Coopersmith 12 (54.5%) Gaetan Nadon 3 (13.6%) Thomas Hellstrom 2 (9.1%) Julien Cristau 2 (9.1%) Yaakov Selkowitz 2 (9.1%) Dirk Wallenstein 1 (4.5%)
Developers with the most changed lines Alan Coopersmith 45843 (99.3%) Julien Cristau 52 (0.1%) Gaetan Nadon 36 (0.1%) Yaakov Selkowitz 23 (0.0%) Thomas Hellstrom 4 (0.0%) Dirk Wallenstein 2 (0.0%)
Developers with the most lines removed Alan Coopersmith 45627 (99.3%) Gaetan Nadon 18 (0.0%)
Developers with the most signoffs (total 23) Alan Coopersmith 13 (56.5%) Gaetan Nadon 3 (13.0%) Thomas Hellstrom 2 (8.7%) Julien Cristau 2 (8.7%) Yaakov Selkowitz 2 (8.7%) Dirk Wallenstein 1 (4.3%)
Developers with the most reviews (total 4) Alan Coopersmith 2 (50.0%) Gaetan Nadon 1 (25.0%) Dan Nicholson 1 (25.0%)
Developers with the most test credits (total 0)
Developers who gave the most tested-by credits (total 0)
Developers with the most report credits (total 0)
Developers who gave the most report credits (total 0)
Top changeset contributors by employer Oracle 12 (54.5%) memsize@videotron.ca 3 (13.6%) yselkowitz@users.sourceforge.net 2 (9.1%) jcristau@debian.org 2 (9.1%) VMWare 2 (9.1%) halsmit@t-online.de 1 (4.5%)
Top lines changed by employer Oracle 46053 (99.7%) jcristau@debian.org 52 (0.1%) memsize@videotron.ca 36 (0.1%) yselkowitz@users.sourceforge.net 23 (0.0%) VMWare 4 (0.0%) halsmit@t-online.de 2 (0.0%)
Employers with the most signoffs (total 23) Oracle 13 (56.5%) memsize@videotron.ca 3 (13.0%) jcristau@debian.org 2 (8.7%) yselkowitz@users.sourceforge.net 2 (8.7%) VMWare 2 (8.7%) halsmit@t-online.de 1 (4.3%)
Nothing or close to nothing was done in the old font scheme (font repo), bitmap and cursor data. Also, from the total of 85 X traditional applications (apps), only 180 changesets were made and mostly concerning autoconf clean up.
Of course lines of code and changeset are far from being a good metric to see actually how the development happened. But still, it does represents something. For sure, there’s also a lot of other inaccurate information that I’m missing from this all. For instance, companies like Collabora does X development but sometimes get the merits for Nokia. Is that fair? I don’t know. And I don’t want to discuss this either :)