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https://github.com/clearlinux/graphene.git
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Chia-Che Tsai
51 lines
1.1 KiB
Bash
Executable File
51 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# memusg -- Measure memory usage of processes
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# Usage: memusg COMMAND [ARGS]...
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#
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# Author: Jaeho Shin <netj@sparcs.org>
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# Created: 2010-08-16
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set -um
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# check input
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[ $# -gt 0 ] || { sed -n '2,/^#$/ s/^# //p' <"$0"; exit 1; }
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# TODO support more options: peak, footprint, sampling rate, etc.
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pgid=`ps -o pgid= $$`
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command="$@"
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# make sure we're in a separate process group
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if [ $pgid = $(ps -o pgid= $(ps -o ppid= $$)) ]; then
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cmd=
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set -- "$0" "$@"
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for a; do cmd+="'${a//"'"/"'\\''"}' "; done
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exec bash -i -c "$cmd"
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fi
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# detect operating system and prepare measurement
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case `uname` in
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Darwin|*BSD) sizes() { /bin/ps -o rss= -g $1; } ;;
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Linux) sizes() { /bin/ps -o rss= -$1; } ;;
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*) echo "`uname`: unsupported operating system" >&2; exit 2 ;;
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esac
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# monitor the memory usage in the background.
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(
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peak=0
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while sizes=`sizes $pgid`
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do
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set -- $sizes
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sample=$((${@/#/+}))
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let peak="sample > peak ? sample : peak"
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sleep 0.1
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done
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echo "memusg \`$command\`: peak=$peak kiloBytes" >> "peak.mem.usg"
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) &
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monpid=$!
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echo "running: exec $@"
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# run the given command
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exec "$@"
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