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32 lines
713 B
Text
32 lines
713 B
Text
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#!/bin/bash
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# a poor man's profiler
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# http://webcache.googleusercontent.com/search?q=cache:http://mituzas.lt/2009/02/15/poor-mans-contention-profiling/
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nsamples=1
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sleeptime=1
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while [ $# -gt 0 ] ; do
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arg=$1;
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if [[ $arg =~ --(.*)=(.*) ]] ; then
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eval ${BASH_REMATCH[1]}=${BASH_REMATCH[2]}
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else
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break
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fi
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shift
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done
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pid=$1
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for x in $(seq 1 $nsamples)
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do
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gdb -ex "set pagination 0" -ex "thread apply all bt" -batch -p $pid
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sleep $sleeptime
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done | \
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awk '
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BEGIN { s = ""; }
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/^Thread/ { if (s != "") print s; s = ""; }
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/^\#/ { if ($3 == "in") { v = $4; } else { v = $2 } if (s != "" ) { s = s "," v} else { s = v } }
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END { print s }' | \
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sort | uniq -c | sort -r -n -k 1,1
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