File:Kernel patches stats.png

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Revision as of 23:03, 19 January 2013 by Glic3rinu (talk | contribs) (Collect data)
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Original file(1,600 × 1,200 pixels, file size: 52 KB, MIME type: image/png)


Description

This graph shows how many patches from OpenVZ developers were merged into mainstream Linux kernel, per each kernel version.

It is drawn by gnuplot using the data set obtained from kernel git repository.

Source code

  1. !/bin/sh
  1. Whose patches to count

PAT='@openvz.org|@parallels.com|@sw.ru|@swsoft.com|@sw.com.sg|adobriyan@|kuznet@'

  1. Return the date of the given tag, in a format usable by gnuplot

get_tag_date() { echo $(git show $1 | egrep ^Date: | head -n1) | sed 's/^Date: ... \(.*\) [-+]....$/\1/' | sed 's/ ..:..:..//' | sed 's/ /-/g' }

  1. Count the number of patches whose authors match $PAT,
  2. for the period between two given git tags

count_patches() { git log --pretty=short --no-merges $1..$2 | egrep '^Author: ' | egrep $PAT | wc -l }

  1. Old 2.6 kernel branch
  2. We start from 2.6.12 -- the first kernel available in git
  3. and end on 2.6.39 -- the last kernel on 2.6 branch

for f in $(seq 13 39); do v1=v2.6.$((f-1)) d1=$(get_tag_date $v1) if [ $f -gt 39 ]; then v2=$HEAD else v2=v2.6.$f fi d2=$(get_tag_date $v2) count=$(count_patches $v1 $v2) if test "$count" -gt 0; then echo $d2 $v2 " " $count fi

done | sed 's/ /\t/g'

  1. New 3.x kernel branch
  2. Transition: patches from 2.6.39 to 3.0

d2=$(get_tag_date v3.0) count=$(count_patches v2.6.39 v3.0) echo $d2 "v3.0" " " $count | sed 's/ /\t/g'

  1. What is the latest kernel patch number in 3.x

latest=$(git tag | grep -v -- -rc | tail -n1 | sed -e 's/^.*\.\(.*\)$/\1/')

  1. Find out if number of patches for HEAD is much more
  2. than for latest -rc. If yes, use HEAD, otherwise -rc.

last_rc=$(git tag | tail -n 1 | grep -- -rc) HEAD=$last_rc if ! test -z "$last_rc"; then much_more=15 count_head=$(count_patches v3.$latest HEAD) count_rc=$(count_patches v3.$latest $last_rc) if test $count_head -gt $((count_rc+much_more)); then HEAD="HEAD " fi fi

  1. We start from 3.0

for f in $(seq 1 $((latest+1))); do v1=v3.$((f-1)) d1=$(get_tag_date $v1) if [ $f -gt $latest ]; then v2=$HEAD else v2=v3.$f fi d2=$(get_tag_date $v2) count=$(count_patches $v1 $v2) if test "$count" -gt 0; then echo $d2 $v2 " " $count fi

done | sed 's/ /\t/g'

Draw the graph

Here is the script to produce the graph. Note it calls the previous script under the name 'count'.

#!/bin/sh

if test "$1" != "-f"; then
	git checkout master
	git pull
	sh count > time.dat
fi

DATE=$(tail -n 1 time.dat | cut -f 1 | awk -F- '{print $2,$1,$3}')
MAXY=$(awk 'BEGIN {max=0}; ($3 > max) {max=$3}; END {print max+50}' < time.dat)
# GNU date is powerful!
MAXX=$(date +%b-1-%Y --date='+2 months')

export GDFONTPATH=/usr/share/fonts/msttcorefonts/
cat << EOF | gnuplot > plot.png
set terminal png enhanced font "verdanab,20" size 1600,1200
#set terminal png enhanced transparent font "verdanab,14" size 1200,600
#set terminal svg enhanced font "verdanab,8" size 800,600

set title "OpenVZ team kernel patches progress as of ${DATE}"

unset xlabel
set xdata time
set timefmt "%b-%d-%Y"
set format x "%b\n%Y"
set grid xtics mxtics noytics

set xrange [ : "${MAXX}" ]
set yrange [ 0 : ${MAXY} ]
set ylabel "Number of patches from OpenVZ team,\n per kernel release, accepted into mainstream"

set border 3		# no lines at right and top
set xtics nomirror	# no tics at top
set ytics nomirror	# no tics at right

plot 'time.dat' using 1:3 with linespoints pt 6 ps 1 lw 2 lt 2 notitle, \
	''	using 1:3:2 with labels left offset 0,1 rotate notitle, \
	''	using 1:3:3 with labels left offset 0.7,0 notitle

EOF

File history

Click on a date/time to view the file as it appeared at that time.

(newest | oldest) View ( | ) (10 | 20 | 50 | 100 | 250 | 500)
Date/TimeThumbnailDimensionsUserComment
12:11, 14 June 2018Thumbnail for version as of 12:11, 14 June 20181,600 × 1,200 (43 KB)Vvs (talk | contribs)4.17+
11:03, 27 April 2018Thumbnail for version as of 11:03, 27 April 20181,600 × 1,200 (43 KB)Vvs (talk | contribs)Kirill Thai submitted huge number of patches into 4.17-rc kernel
16:16, 8 February 2018Thumbnail for version as of 16:16, 8 February 20181,600 × 1,200 (45 KB)Vvs (talk | contribs)
12:34, 3 June 2015Thumbnail for version as of 12:34, 3 June 20151,600 × 1,200 (30 KB)Sergey Bronnikov (talk | contribs)
03:25, 24 March 2014Thumbnail for version as of 03:25, 24 March 20141,600 × 1,200 (38 KB)Kir (talk | contribs)better labels
03:17, 24 March 2014Thumbnail for version as of 03:17, 24 March 20141,600 × 1,200 (38 KB)Kir (talk | contribs)Updated
22:46, 19 January 2013Thumbnail for version as of 22:46, 19 January 20131,600 × 1,200 (49 KB)Glic3rinu (talk | contribs)3.8-rc4, good work guys!
20:48, 19 March 2012Thumbnail for version as of 20:48, 19 March 20121,600 × 1,200 (47 KB)Glic3rinu (talk | contribs)kernel 3.3 released (c/r patches)
19:51, 26 January 2012Thumbnail for version as of 19:51, 26 January 20121,600 × 1,200 (47 KB)Glic3rinu (talk | contribs)now 3.0 is displayed too
19:39, 26 January 2012Thumbnail for version as of 19:39, 26 January 20121,600 × 1,200 (46 KB)Glic3rinu (talk | contribs)v3.3-rc1
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