Xen Project 4.11 Acknowledgements
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 4.10 with Xen 4.11. 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 4.11 Hypervisor Total.
Note: The data below shows a reduction in public code review activity, as well as development velocity. This figure is substantially skewed by a number of large and complex security related code series that were developed in private under security embargoes. In other words, the reduction signifies that we are doing fewer public reviews to satisfy requirements that allow project members to fix issues under security embargoes. In addition, we ported many of these changes - including code that enabled these series - to older releases of Xen to uphold our maintenance and security guarantees.
|Attribute||4.10 Hypervisor Total [ 1 ]||4.11 Hypervisor Total [ 1 ]||4.11 Hypervisor Core [ 2 ]||4.11 Hypervisor Other [ 3 ]||Drivers and Devices (other projects) [ 4 ]|
|Release Cycle||174 days
111 dev window/days [ 6 ]
139 dev window/days [ 6 ]
|Changesets (including backports) [ 8 ]||1751||1971|
|Series (=Features) [ 5 ]||525||406|
|Average Size of Feature||2.3||3.0|
|Changes / Day||7.2||5.4|
|Changes / Dev Day [ 6 ]||11.2||8.7|
|Features / Day [ 5 ]||3.0||3.4|
|Code Review Statistics|
|Review Comments [ 5 ]||6527||7058|
|Review Comments / Day [ 5 ]||37.8||31.8|
|Review Comments / Dev Day [ 6 ]||59.2||50.8|
|Comments / Series [ 5 ]||12.5||17.4|
|Employers [ 7 ]||31||27||27||37|
4.11 Hypervisor Only Code Contributions [ 1 ]
Breakdown by Individual
Code Contributions to Xen Related Drivers and Devices in Linux, NetBSD, FreeBSD [ 4 ]
Breakdown by Individual
4.11 Hypervisor Reviewers [ 5 ]
This table is sortable : please click on the 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.
[ 1 ] Includes the following repos: xen, mini-os, osstest, raisin, livepatch-build-tools, xtf
[ 2 ] Includes the following repos: xen
[ 3 ] Includes the following repos: mini-os, osstest, raisin, livepatch-build-tools, xtf
[ 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
[ 7 ] Only known employers are used. Unknown employers were discounted.
[ 8 ] Includes backports to stable branches