File:Kernel patches stats.png

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Revision as of 15:55, 4 May 2008 by Kir (talk | contribs) (Collect data: Updated script)
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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

Collect data

Here is the script to produce the data for the graph, called count:

#!/bin/sh

# Whose patches to count
PAT='@openvz.org|@parallels.com|@sw.ru|@swsoft.com|@sw.com.sg|adobriyan@|kuznet@'

# 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'
}

# Count the number of patches whose authors match $PAT,
# for the period between two given git tags
count_patches() {
	git log --pretty=short --no-merges $1..$2 |
		egrep '^Author: ' | egrep $PAT | wc -l
}

# What is the latest kernel patch number (i.e. x in 2.6.x)
latest=$(git tag | grep -v -- -rc | tail -n1 | sed -e 's/^.*\.\(.*\)$/\1/')

# Find out if number of patches for HEAD is much more
# 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 v2.6.$latest HEAD)
	count_rc=$(count_patches v2.6.$latest $last_rc)
	if test $count_head -gt $((count_rc+much_more)); then
		HEAD="HEAD   "
	fi
fi

# We start from 2.6.12 -- the first kernel available in git
for f in $(seq 13 $((latest+1))); do
	v1=v2.6.$((f-1))
	d1=$(get_tag_date $v1)
	if [ $f -gt $latest ]; then
		v2=$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'

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 pull
	sh count > time.dat
fi

DATE=$(date '+%d %b %Y')
MAXY=$(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 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, per kernel release,\naccepted 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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