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#!/bin/bash
# Usage:
# nice -n -19 strace-brick.sh glusterfsd 50
brick_process_name=$1
min_watch_cpu=$2
if [ ! $brick_process_name ]; then
brick_process_name=glusterfsd
fi
if [ ! $min_watch_cpu ]; then
min_watch_cpu=50
fi
echo "min_watch_cpu: $min_watch_cpu"
break=false
while ! $break;
do
mypids=( $(pgrep $brick_process_name) )
echo "mypids: ${mypids[*]}"
pid_args=$(echo ${mypids[*]} | sed -e 's/ / -p /g;s/^/-p /')
echo "pid_args: $pid_args"
pcpu=( $(ps $pid_args -o pcpu -h ) )
echo "pcpu: ${pcpu[*]}"
wait_longer=false
for i in $( seq 0 $((${#pcpu[*]} - 1)) )
do
echo "i: $i"
echo "mypids[$i]: ${mypids[$i]}"
int_pcpu=$(echo ${pcpu[$i]} | cut -f 1 -d '.')
echo "int_pcpu: $int_pcpu"
if [ ! $int_pcpu ] || [ ! $min_watch_cpu ]; then
break=true
echo "breaking"
fi
if [ $int_pcpu -ge $min_watch_cpu ]; then
wait_longer=true
mydirname="${brick_process_name}-${mypids[$i]}-$(date --utc +'%Y%m%d-%H%M%S.%N')"
$(mkdir $mydirname && cd $mydirname && timeout --kill-after=5 --signal=KILL 60 nice -n -19 strace -p ${mypids[$i]} -ff -tt -T -o $brick_process_name) &
fi
done
if $wait_longer; then
sleep 90
else
sleep 15
fi
done
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