Xen Project 4.8 Acknowledgements: Difference between revisions

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{{InfoLeft|Note that the Acknowledgements have been created based on 4.8.0-rc8 as the author of this page will likely be on vacation during the release. This means that a small number of contributions may be missed.}}
Note that the Acknowledgements have been created based on 4.8.0-rc8, which was the final RC for Xen 4.8.0.


== Overview ==
== Overview ==
Line 8: Line 8:


{|class="zebra"
{|class="zebra"
!style="width: 140px;"|Attribute
!style="width: 170px;"|Attribute
!style="width: 130px;"|[[Xen_Project_4.7_Acknowledgements|4.7 Hypervisor Total]] <sup>[ 1 ]</sup>
!style="width: 170px;"|[[Xen_Project_4.7_Acknowledgements|4.7 Hypervisor Total]] <sup>[ 1 ]</sup>
!style="width: 130px; color: blue;"|4.8 Hypervisor Total <sup>[ 1 ]</sup>
!style="width: 170px; color: blue;"|4.8 Hypervisor Total <sup>[ 1 ]</sup>
!style="width: 130px;"|4.8 Hypervisor Core<sup>[ 2 ]</sup>
!style="width: 130px;"|4.8 Hypervisor Core<sup>[ 2 ]</sup>
!style="width: 130px;"|4.8 Hypervisor Other <sup>[ 3 ]</sup>
!style="width: 130px;"|4.8 Hypervisor Other <sup>[ 3 ]</sup>
Line 16: Line 16:
|-
|-
|'''Release Cycle'''
|'''Release Cycle'''
|251 days<br>8.2 months
|255 days<br>197 dev window/days<sup>[ 6 ]</sup><br>8.4 months
|style="color: blue;"|'''180 days<br>5.9 months'''
|style="color: blue;"|'''161 days<br>124 dev window/days<sup>[ 6 ]</sup><br>5.3 months'''
|
|
|
|
!
!
|-
|-
!colspan="6"|Development Velocity
|'''Changes/month'''
|230
|style="color: blue;"|'''211'''
|
|
!
|-
|-
|'''Changesets'''
|'''Changesets'''
Line 34: Line 29:
|967
|967
|278
|278
!TBD
!321
|-
|-
|'''Series (=Features)''' <sup>[ 5 ]</sup>
|'''Series (=Features)''' <sup>[ 5 ]</sup>
|1025
|1025
|style="color: blue;"|'''TBD'''
|style="color: blue;"|'''575'''
|
|
|
|
!
!
|-
|'''Average Size of Feature'''
|1.84
|style="color: blue;"|'''2.17''' <span style="color:green">(+15%)</span>
|
|
!
|-
|'''Changes / Day'''
|7.5
|style="color: blue;"|'''7.7''' <span style="color:green">(+3%)</span>
|
|
!
|-
|'''Changes / Dev Day''' <sup>[ 6 ]</sup>
|9.6
|style="color: blue;"|'''10.0''' <span style="color:green">(+4%)</span>
|
|
!
|-
|'''Features / Day''' <sup>[ 5 ]</sup>
|4.0
|style="color: blue;"|'''3.6''' <span style="color:red">(-11%)</span>
|
|
!
|-
!colspan="6"|Code Review Statistics
|-
|-
|'''Review Comments''' <sup>[ 5 ]</sup>
|'''Review Comments''' <sup>[ 5 ]</sup>
|11628
|11628
|style="color: blue;"|'''TBD'''
|style="color: blue;"|'''6950'''
|
|
!
|-
|'''Review Comments / Day''' <sup>[ 5 ]</sup>
|45.6
|style="color: blue;"|'''43.2''' <span style="color:red">(-6%)</span>
|
|
|
|
Line 52: Line 84:
|'''Comments / Series''' <sup>[ 5 ]</sup>
|'''Comments / Series''' <sup>[ 5 ]</sup>
|11.3
|11.3
|style="color: blue;"|'''TBD'''
|style="color: blue;"|'''12.1''' <span style="color:green">(+7%)</span>
|
|
|
|
!
!
|-
!colspan="6"|Code Churn
|-
|-
|'''Lines Added'''
|'''Lines Added'''
Line 62: Line 96:
|70833
|70833
|8066
|8066
!18421
!TBD
|-
|-
|'''Lines Removed'''
|'''Lines Removed'''
Line 69: Line 103:
|59502
|59502
|2823
|2823
!13775
!TBD
|-
!colspan="6"|Engagement
|-
|-
|'''Individuals'''
|'''Individuals'''
Line 76: Line 112:
|68
|68
|5
|5
!TBD
!59
|-
|-
|'''Employers'''
|'''Employers'''
Line 83: Line 119:
|33
|33
|4
|4
!TBD
!37
|}
|}


<br>
<br>

== 4.8 Hypervisor Only Code Contributions <sup>[ 2 ]</sup> ==
== 4.8 Hypervisor Only Code Contributions <sup>[ 2 ]</sup> ==


Line 169: Line 206:
| Kai Huang || 24 || 22 || 1
| Kai Huang || 24 || 22 || 1
|-
|-
| Konrad Rzeszutek Will || 2219 || 1064 || 50
| Konrad Rzeszutek Wilk || 2219 || 1064 || 50
|-
|-
| Kyle Huey || 100 || 6 || 2
| Kyle Huey || 100 || 6 || 2
Line 181: Line 218:
| Luwei Kang || 60 || 1 || 2
| Luwei Kang || 60 || 1 || 2
|-
|-
| Marek Marczykowski-Górecki || 45 || 1 || 3
| Marek Marczykowski-Górecki || 45 || 1 || 3
|-
|-
| Meng Xu || 13 || 6 || 4
| Meng Xu || 13 || 6 || 4
Line 190: Line 227:
|-
|-
| Paul Durrant || 192 || 137 || 3
| Paul Durrant || 192 || 137 || 3
-
|-
| Paul Lai || 43 || 30 || 1
| Paul Lai || 43 || 30 || 1
|-
|-
Line 231: Line 268:
| Zhi Wang || 321 || 4 || 1
| Zhi Wang || 321 || 4 || 1
|}
|}

<br>


== 4.8 Hypervisor Related Code Contributions <sup>[ 3 ]</sup> ==
== 4.8 Hypervisor Related Code Contributions <sup>[ 3 ]</sup> ==
Line 265: Line 304:
!style="min-width: 110px;"|Lines Removed {{Sortable}}
!style="min-width: 110px;"|Lines Removed {{Sortable}}
!style="min-width: 110px;"|Changesets {{Sortable}}
!style="min-width: 110px;"|Changesets {{Sortable}}
|-
| Andrey Grodzovsky || 2 || 4 || 1
|-
| Anthony PERARD || 6 || 7 || 2
|-
| Arnd Bergmann || 3 || 3 || 1
|-
| Bryan Drewery || 1 || 1 || 1
|-
| Ben Chalmers || 88 || 25 || 5
|-
| Bhaktipriya Shridhar || 3 || 25 || 2
|-
| Bob Liu || 96 || 92 || 4
|-
| Manuel Bouyer || 57 || 57 || 2
|-
| Bruce Rogers || 1 || 1 || 1
|-
| Cao Jin || 2 || 3 || 1
|-
| Christoph Hellwig || 0 || 1 || 1
|-
| Christophe Ricard || 19 || 17 || 4
|-
| Dan Williams || 1 || 2 || 1
|-
| David Buches || 9 || 1 || 1
|-
| David S. Miller || 2 || 107 || 3
|-
| David Vrabel || 297 || 411 || 6
|-
| Dmitry Torokhov || 0 || 0 || 1
|-
| Dongli Zhang || 4 || 4 || 2
|-
| Emil Condrea || 661 || 583 || 13
|-
| Eric Blake || 5 || 4 || 2
|-
| Eytan Heidingsfeld || 5 || 0 || 1
|-
| Fabian Frederick || 1 || 1 || 1
|-
| Fam Zheng || 2 || 6 || 2
|-
| Filipe Manco || 30 || 16 || 1
|-
| Gerd Hoffmann || 3 || 0 || 1
|-
| Jan Beulich || 108 || 151 || 21
|-
| Jaromír Dolecek || 14 || 11 || 1
|-
| Jens Axboe || 0 || 0 || 1
|-
| John Baldwin || 2 || 0 || 1
|-
| Jung-uk Kim || 0 || 0 || 1
|-
| Joerg Wunsch || 4 || 1 || 1
|-
| John Snow || 0 || 2 || 1
|-
| Juergen Gross || 616 || 371 || 21
|-
| Kamil Rytarowski || 72 || 5 || 1
|-
| KarimAllah Ahmed || 11 || 84 || 1
|-
| Kevin Wolf || 1 || 1 || 1
|-
| Konstantin Belousov || 8 || 0 || 1
|-
| Robert Elz || 9 || 1 || 1
|-
| Krzysztof Kozlowski || 13 || 13 || 1
|-
| Linus Torvalds || 0 || 0 || 16
|-
| Marc-Andre Lureau || 38 || 41 || 6
|-
| Markus Armbruster || 12 || 14 || 3
|-
| Maxime Villard || 327 || 384 || 12
|-
| Masanobu SAITOH || 71 || 70 || 2
|-
| Muhammad Falak R Wani || 3 || 3 || 1
|-
| Nonaka Kimihiro || 8 || 2 || 1
|-
| Olaf Hering || 30 || 1 || 2
|-
| Owen Smith || 2251 || 3552 || 22
|-
| Ryota Ozaki || 2 || 3 || 1
|-
| Paul Durrant || 11274 || 7362 || 127
|-
| Paul Gortmaker || 1 || 1 || 1
|-
| Paulina Szubarczyk || 162 || 5 || 1
|-
| Peter Maydell || 0 || 0 || 3
|-
| Radim Krčmář || 6 || 0 || 1
|-
| Ross Lagerwall || 43 || 25 || 2
|-
| Roger Pau Monné || 1599 || 87 || 8
|-
| Sebastian Andrzej Siewior || 12 || 22 || 1
|-
| Shannon Zhao || 379 || 165 || 9
|-
| Stefano Stabellini || 2 || 2 || 1
|-
| Thomas Huth || 1 || 1 || 1
|-
| Vitaly Kuznetsov || 34 || 11 || 7
|-
| Vlastimil Babka || 2 || 2 || 1
|-
| Wei Liu || 6 || 0 || 1
|-
| Wei Yongjun || 2 || 11 || 1
|}
|}


<br>
{{TODOLeft|Insert data}}
== 4.8 Hypervisor Reviewers <sup> [ 5 ] </sup> ==
This table is sortable : please click on the {{Sortable}} icon besides the column header, to sort by a specific column. Note that in the table below, we '''only''' count review comments by community members other than comments by the author of a patch. We do '''not''' count replies and clarifications by the author of a patch that are made in response to review comments by others.

{|class="zebra sortable"
!style="min-width: 200px;"|Name {{Sortable}}
!style="min-width: 110px;"|Review Comments {{Sortable}}
|-
| 105 others (less than 10 review comments each)
| 300
|-
| Andrew Cooper
| 651
|-
| Andrii Anisov
| 21
|-
| Anshul Makkar
| 16
|-
| Anthony Perard
| 42
|-
| Bob Liu
| 20
|-
| Boris Ostrovsky
| 269
|-
| Corneliu Zuzu
| 88
|-
| Daniel De Graaf
| 35
|-
| Daniel Kiper
| 82
|-
| Dario Faggioli
| 124
|-
| David Vrabel
| 77
|-
| Dirk Behme
| 50
|-
| Doug Goldstein
| 35
|-
| Feng Wu
| 65
|-
| George Dunlap
| 215
|-
| Greg Kurz
| 10
|-
| Ian Jackson
| 204
|-
| Jan Beulich
| 1310
|-
| Joao Martins
| 26
|-
| Juergen Gross
| 159
|-
| Julien Grall
| 644
|-
| Kevin Tian
| 85
|-
| Konrad Wilk
| 394
|-
| Kyle Huey
| 27
|-
| Lars Kurth
| 40
|-
| Luis R. Rodriguez
| 22
|-
| Luwei Kang
| 10
|-
| Meng Xu
| 11
|-
| Michael Turquette
| 11
|-
| Mihai Donțu
| 16
|-
| Olaf Hering
| 19
|-
| Oleksandr Andrushchenko
| 48
|-
| Paul Durrant
| 64
|-
| Paulina Szubarczyk
| 14
|-
| Peng Fan
| 14
|-
| Quan Xu
| 31
|-
| Razvan Cojocaru
| 97
|-
| Roger Pau Monné
| 91
|-
| Ross Lagerwall
| 36
|-
| Samuel Thibault
| 77
|-
| Sergej Proskurin
| 125
|-
| Shanker Donthineni
| 39
|-
| Shannon Zhao
| 74
|-
| Stefano Stabellini
| 271
|-
| Tamas Lengyel
| 157
|-
| Tim Deegan
| 40
|-
| Wei Liu
| 643
|-
| Yi Y Sun
| 20
|-
| Yu Zhang
| 31
|}


== Footnotes ==
== Footnotes ==
Line 276: Line 600:
</span><br>
</span><br>
<span id="Foot5"><sup>[ 5 ]</sup> This data was extracted from the [https://kibana.bitergia.com/xen Xen Project Code Review Dashboard]</span><br>
<span id="Foot5"><sup>[ 5 ]</sup> This data was extracted from the [https://kibana.bitergia.com/xen Xen Project Code Review Dashboard]</span><br>
<span id="Foot6"><sup>[ 6 ]</sup> These are the days/months during which we were not in code freeze</span><br>


[[Category:Xen]]
[[Category:Xen]]

Latest revision as of 11:27, 5 June 2017

Note that the Acknowledgements have been created based on 4.8.0-rc8, which was the final RC for Xen 4.8.0.

Overview

As we have made significant changes to the xen source tree structure, we will count acknowledgements in line with RFC Xen 4.6 Acknowledgements.

The following table compares Xen 4.7 with Xen 4.8. We also cover changes to Xen only components in Linux, FreeBSD, NetBSD and QEMU in the "Drivers and Devices" column, which are primarily made by Xen Project developers. Note that the number is not part of the 4.8 Hypervisor Total.

Attribute 4.7 Hypervisor Total [ 1 ] 4.8 Hypervisor Total [ 1 ] 4.8 Hypervisor Core[ 2 ] 4.8 Hypervisor Other [ 3 ] Drivers and Devices (other projects)[ 4 ]
Release Cycle 255 days
197 dev window/days[ 6 ]
8.4 months 		161 days
124 dev window/days[ 6 ]
5.3 months
Development Velocity
Changesets 1887 1245 967 278 321
Series (=Features) [ 5 ] 1025 575
Average Size of Feature 1.84 2.17 (+15%)
Changes / Day 7.5 7.7 (+3%)
Changes / Dev Day [ 6 ] 9.6 10.0 (+4%)
Features / Day [ 5 ] 4.0 3.6 (-11%)
Code Review Statistics
Review Comments [ 5 ] 11628 6950
Review Comments / Day [ 5 ] 45.6 43.2 (-6%)
Comments / Series [ 5 ] 11.3 12.1 (+7%)
Code Churn
Lines Added 106606 78899 70833 8066 18421
Lines Removed 37160 62325 59502 2823 13775
Engagement
Individuals 102 68 68 5 59
Employers 36 34 33 4 37


4.8 Hypervisor Only Code Contributions [ 2 ]

Breakdown by Individual

This table is sortable : please click on the Sortable.gif icon besides the column header, to sort by a specific column.

Name Sortable.gif Lines Added Sortable.gif Lines Removed Sortable.gif Changesets Sortable.gif
Andrew Cooper 1605 1418 101
Anshul Makkar 89 28 3
Anthony PERARD 409 251 13
Bob Liu 1 1 1
Boris Ostrovsky 1933 724 36
Cedric Bosdonnat 5 5 1
Casion Woo 3 3 1
Chao Gao 1 1 1
Chris Patterson 27 2 2
Corneliu ZUZU 391 232 14
Daniel De Graaf 787 1103 20
Daniel Kiper 160 94 7
Dario Faggioli 2130 661 50
David Vrabel 1 7 1
Derek Straka 35 2 1
Dirk Behme 29 80 4
Dongli Zhang 73 22 4
Doug Goldstein 124 69 7
Edgar E. Iglesias 139 48 8
Elena Ufimtseva 1 1 1
Emanuel Czirai 14 1 1
Euan Harris 24 8 3
Feng Wu 1 1 1
George Dunlap 266 415 10
Haozhong Zhang 15 23 2
He Chen 152 50 2
Ian Jackson 46 91 13
Jacob Pan 28 0 1
Jan Beulich 4540 3049 164
Jiandi An 1 1 1
Jim Fehlig 6 2 1
Joao Martins 212 36 5
Jonathan Daugherty 2 2 2
Juergen Gross 2888 2178 49
Julien Grall 3441 2024 112
Kai Huang 24 22 1
Konrad Rzeszutek Wilk 2219 1064 50
Kyle Huey 100 6 2
Lan Tianyu 11 6 2
Lars Kurth 534 14 6
Len Brown 160 1 3
Luwei Kang 60 1 2
Marek Marczykowski-Górecki 45 1 3
Meng Xu 13 6 4
Mihai Dontu 58 2 1
Olaf Hering 26 2 2
Paul Durrant 192 137 3
Paul Lai 43 30 1
Paulina Szubarczyk 317 115 7
Peng Fan 6 11 6
Quan Xu 774 415 18
Razvan Cojocaru 410 125 7
Roger Pau Monne 153 75 16
Ronald Rojas 13 13 1
Ross Lagerwall 155 1 1
Rusty Bird 18 1 1
Shanker Donthineni 341 158 15
Shannon Zhao 782 43 18
Stefano Stabellini 47 6 5
Suravee Suthikulpanit 109 46 3
Tamas K Lengyel 1181 455 19
Tianyang Chen 56 50 2
Trammell Hudson 2 2 1
Vitaly Kuznetsov 8 0 1
Wei Chen 558 9 6
Wei Liu 42518 44048 117
Zhi Wang 321 4 1


4.8 Hypervisor Related Code Contributions [ 3 ]

Breakdown by Individual

Note that the table below does not cover contributions to Linux, NetBSD, FreeBSD, QEMU, libvirt and other related projects. It lists contributors to mini-os (formerly part of xen.git), osstest (our test code and test cases), raisin (a deployment and test tool) and livepatch-build-tools (tools to builld livepatch payloads).

This table is sortable : please click on the Sortable.gif icon besides the column header, to sort by a specific column.

Name Sortable.gif Lines Added Sortable.gif Lines Removed Sortable.gif Changesets Sortable.gif
Ian Jackson 3452 745 182
Juergen Gross 3778 1792 58
Konrad Rzeszutek Wilk 24 6 7
Ross Lagerwall 99 28 5
Wei Liu 713 252 28


Code Contributions to Xen Related Drivers and Devices in Linux, NetBSD, FreeBSD [ 4 ]

Breakdown by Individual

This table is sortable : please click on the Sortable.gif icon besides the column header, to sort by a specific column.

Name Sortable.gif Lines Added Sortable.gif Lines Removed Sortable.gif Changesets Sortable.gif
Andrey Grodzovsky 2 4 1
Anthony PERARD 6 7 2
Arnd Bergmann 3 3 1
Bryan Drewery 1 1 1
Ben Chalmers 88 25 5
Bhaktipriya Shridhar 3 25 2
Bob Liu 96 92 4
Manuel Bouyer 57 57 2
Bruce Rogers 1 1 1
Cao Jin 2 3 1
Christoph Hellwig 0 1 1
Christophe Ricard 19 17 4
Dan Williams 1 2 1
David Buches 9 1 1
David S. Miller 2 107 3
David Vrabel 297 411 6
Dmitry Torokhov 0 0 1
Dongli Zhang 4 4 2
Emil Condrea 661 583 13
Eric Blake 5 4 2
Eytan Heidingsfeld 5 0 1
Fabian Frederick 1 1 1
Fam Zheng 2 6 2
Filipe Manco 30 16 1
Gerd Hoffmann 3 0 1
Jan Beulich 108 151 21
Jaromír Dolecek 14 11 1
Jens Axboe 0 0 1
John Baldwin 2 0 1
Jung-uk Kim 0 0 1
Joerg Wunsch 4 1 1
John Snow 0 2 1
Juergen Gross 616 371 21
Kamil Rytarowski 72 5 1
KarimAllah Ahmed 11 84 1
Kevin Wolf 1 1 1
Konstantin Belousov 8 0 1
Robert Elz 9 1 1
Krzysztof Kozlowski 13 13 1
Linus Torvalds 0 0 16
Marc-Andre Lureau 38 41 6
Markus Armbruster 12 14 3
Maxime Villard 327 384 12
Masanobu SAITOH 71 70 2
Muhammad Falak R Wani 3 3 1
Nonaka Kimihiro 8 2 1
Olaf Hering 30 1 2
Owen Smith 2251 3552 22
Ryota Ozaki 2 3 1
Paul Durrant 11274 7362 127
Paul Gortmaker 1 1 1
Paulina Szubarczyk 162 5 1
Peter Maydell 0 0 3
Radim Krčmář 6 0 1
Ross Lagerwall 43 25 2
Roger Pau Monné 1599 87 8
Sebastian Andrzej Siewior 12 22 1
Shannon Zhao 379 165 9
Stefano Stabellini 2 2 1
Thomas Huth 1 1 1
Vitaly Kuznetsov 34 11 7
Vlastimil Babka 2 2 1
Wei Liu 6 0 1
Wei Yongjun 2 11 1


4.8 Hypervisor Reviewers [ 5 ]

This table is sortable : please click on the Sortable.gif icon besides the column header, to sort by a specific column. Note that in the table below, we only count review comments by community members other than comments by the author of a patch. We do not count replies and clarifications by the author of a patch that are made in response to review comments by others.

Name Sortable.gif Review Comments Sortable.gif
105 others (less than 10 review comments each) 300
Andrew Cooper 651
Andrii Anisov 21
Anshul Makkar 16
Anthony Perard 42
Bob Liu 20
Boris Ostrovsky 269
Corneliu Zuzu 88
Daniel De Graaf 35
Daniel Kiper 82
Dario Faggioli 124
David Vrabel 77
Dirk Behme 50
Doug Goldstein 35
Feng Wu 65
George Dunlap 215
Greg Kurz 10
Ian Jackson 204
Jan Beulich 1310
Joao Martins 26
Juergen Gross 159
Julien Grall 644
Kevin Tian 85
Konrad Wilk 394
Kyle Huey 27
Lars Kurth 40
Luis R. Rodriguez 22
Luwei Kang 10
Meng Xu 11
Michael Turquette 11
Mihai Donțu 16
Olaf Hering 19
Oleksandr Andrushchenko 48
Paul Durrant 64
Paulina Szubarczyk 14
Peng Fan 14
Quan Xu 31
Razvan Cojocaru 97
Roger Pau Monné 91
Ross Lagerwall 36
Samuel Thibault 77
Sergej Proskurin 125
Shanker Donthineni 39
Shannon Zhao 74
Stefano Stabellini 271
Tamas Lengyel 157
Tim Deegan 40
Wei Liu 643
Yi Y Sun 20
Yu Zhang 31

Footnotes

[ 1 ] Includes the following repos: xen, mini-os, osstest, raisin, livepatch-build-tools
[ 2 ] Includes the following repos: xen
[ 3 ] Includes the following repos: mini-os, osstest, raisin, livepatch-build-tools
[ 4 ] Includes commits to the following Xen specific directories of the following upstream projects: linux: arch/*/xen/ arch/*/include/asm/xen/ drivers/xen/ drivers/*/*xen* include/xen/ arch/*/pci/*xen* ; netbsd: sys/arch/xen; freebsd: sys/dev/xen/ sys/x86/xen sys/xen/; qemu: xen* hw/i386/xen hw/xenpv hw/*/xen* hw/xen include/*/xen*, xen windows pv drivers
[ 5 ] This data was extracted from the Xen Project Code Review Dashboard
[ 6 ] These are the days/months during which we were not in code freeze

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