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|
#!/bin/bash
#
##repobench - generate or render reposurgeon profiling results
##
## usage: repobench [-h] [-c cmd] [-p datafiles] [-o datafiles] [-s runtime|heap|highwater] [dumpfile min step max]
command=""
datfile=""
display=no
style=runtime
while getopts c:hops: opt
do
case $opt in
c) command="$OPTARG";;
o) display=yes; svg=yes;;
p) display=yes; svg=no;;
s) style=$OPTARG;;
*) grep '^##' "${0}" | sed -e 's/##//'
exit 0;;
esac
done
shift $((OPTIND - 1))
reposurgeon="$(dirname "${0}")/reposurgeon"
function alphaonly {
echo -n "${*}" | tr -cs '[:lower:]' '_'
}
if [ $# = 4 ] && [ "${display}" = no ]
then
function run {
datfile="${1}" # The output benchmark data
logfile="${2}" # The logfile for the conversion
dump="${3}" # The dump to be read in
readlimit="${4}" # The nmber of revisions to read
"${reposurgeon}" "logfile ${logfile}" \
"readlimit ${readlimit}" \
"${command}" \
"read <${dump}" \
"profile bench" >>"${datfile}"
}
dump="${1}"
min="${2}"
step="${3}"
max="${4}"
# This really shouldn't be run outside of the reposurgeon
# repository, but we set up a fallback just in case
rev="$(git describe HEAD 2>/dev/null)"
if [ "$rev" = "" ]
then
# shellcheck disable=SC2046
set -- $(reposurgeon --version)
rev=$2
fi
datfile="$(basename "${dump}")_${rev}.dat"
for readlimit in $(seq "${min}" "${step}" "${max}"); do
logfile="$(basename "${dump}")_${rev}_${readlimit}.log"
# Flush all disk VM caches so the data file has to be reread
sudo sh -c 'echo 3 >/proc/sys/vm/drop_caches'
run "${datfile}" "${logfile}" "${dump}" "${readlimit}"
if [ $? == 1 ] # In this context, means we got EOF before readlimit
then
break
fi
done
echo "Results are in ${datfile}"
exit 0
fi
if [ "${display}" = yes ]
then
case "${style}" in
runtime) idx=2; title="running time";;
heap) idx=3; title="heap size";;
highwater) idx=4; title="total memory";;
*)
echo "Unknown plot type ${style}" >&2
exit 1
;;
esac
fi
if [ "${display}" = yes ] && [ "$2" = "" ]
then
datfile=${datfile:-$1}
if [ ! -f "$datfile" ]
then
echo "File ${datfile} is missing." >&2
exit 1
fi
cat >/tmp/plotme$$ <<EOF
set key top lmargin
set xlabel "number of revisions read in by reposurgeon"
set ylabel "${style}"
f(x) = a*x + b
g(x) = c*x**2 + d*x + e
fit f(x) file using 1:$idx via a,b
fit g(x) file using 1:$idx via c,d,e
plot file u 1:$idx title "$title" lw 2, \
f(x) title "linear fit" lw 2, \
g(x) title "quadratic fit" lw 2
EOF
# The actual plotting
if [ "${svg}" = yes ]
then
# You could use the non-SVG mode to view the graph, and then
# use the viewer to save an svg file. However, that has some
# drawbacks; in particular the size of the graph will be fixed
# rather than dynamic, which means that it won't resize to
# your browser window.
name="$(alphaonly "${title}")_from_$(alphaonly "${datfile}")"
gnuplot --persist -e "file='${datfile}'; set terminal svg size 1920,1080 dynamic mouse standalone name '${name}'" /tmp/plotme$$
else
gnuplot --persist -e "file='${datfile}'" /tmp/plotme$$ -
fi
rm -f /tmp/plotme$$
exit 0
fi
if [ "${display}" = yes ] && [ "$2" != "" ]
then
# We have: Multiple benchmark-data files corresponding to different
# revisions. We want: A merged plot extracting a selected statistic
# from all of them for comparative graphing.
cat >/tmp/plotme$$ <<EOF
set key top lmargin
set title "comparative ${title}"
set xlabel "number of revisions read in by reposurgeon"
set ylabel "${style}"
plot for [i=1:words(files)] word(files, i) using 1:${idx} title word(files, i) noenhanced lw 2
EOF
# The actual plotting
if [ "${svg}" = yes ]
then
name="comparative_$(alphaonly "${title}")"
gnuplot --persist -e "files='$*'; set terminal svg size 1920,1080 dynamic mouse standalone name '${name}'" /tmp/plotme$$
else
gnuplot --persist -e "files='$*'" /tmp/plotme$$ -
fi
rm -f /tmp/plotme$$
exit 0
fi
# Fall through to usage description
grep '^##' "${0}" | sed -e 's/##//'
# end
|
