parallel/testsuite/tests-to-run/parallel-local2.sh

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#!/bin/bash
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forceload () {
# Force load
LOAD=$1
# Start 10 times as many burnP6
seq 0 0.1 $1 | parallel -j0 timeout 20 burnP6 2>/dev/null &
PID=$!
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# Give GNU Parallel 1 second to startup
sleep 1
perl -e 'do{$a=`uptime`} while($a=~/average: *(\S+)/ and $1 < '$LOAD')'
# Load is now > $CPUS
}
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# Force load avg > number of cpu cores
forceload $(parallel --number-of-cores)
cat <<'EOF' | parallel -vj0 -k -L1
echo "bug #38441: CPU usage goes to 100% if load is higher than --load at first job"
/usr/bin/time -f %e parallel --load 100% true ::: a 2>&1 |
perl -ne '$_ > 1 and print "More than 1 secs wall clock: OK\n"'
/usr/bin/time -f %U parallel --load 100% true ::: a 2>&1 |
perl -ne '$_ < 1 and print "Less than 1 secs user time: OK\n"'
echo '### Test slow arguments generation - https://savannah.gnu.org/bugs/?32834'
seq 1 3 | parallel -j1 "sleep 2; echo {}" | parallel -kj2 echo
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EOF
# Make sure we got all the burnP6 killed
killall -9 burnP6 2>/dev/null
echo '### Test too slow spawning'
# Let the commands below run during high load
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seq 1000 | timeout 20 parallel -j400% -N0 burnP6 2>/dev/null &
PID=$!
seq 1 1000 | stdout nice nice parallel --halt 1 -uj0 -N0 kill $PID |
perl -pe '/parallel: Warning: Starting \d+ processes took/ and do {close STDIN; `kill '$PID';killall -9 burnP6`; print "OK\n"; exit }';
# Make sure we got all the burnP6 killed
killall -9 burnP6 2>/dev/null