46 lines
938 B
Bash
Executable File
46 lines
938 B
Bash
Executable File
#!/bin/bash
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#
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# Mount a loopback filesystem somewhere on /tmp, then run an
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# infinite loop inside that does the following:
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# 1) Extract linux-3.0.tar.gz
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# 2) Delete
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# 3) Get memory profile
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#
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# This test is good at discovering inode-related memory leaks because it creates
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# huge numbers of files.
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set -eu
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# Setup dirs
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cd /tmp
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wget -nv --show-progress -c https://www.kernel.org/pub/linux/kernel/v3.0/linux-3.0.tar.gz
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DIR1=$(mktemp -d /tmp/loopback-mem.XXX)
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DIR2=$DIR1.mnt
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mkdir $DIR2
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# Mount
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loopback -l -memprofile /tmp/lmem $DIR2 $DIR1 &
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LOOPBACKPID=$(jobs -p)
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sleep 1
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cd $DIR2
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# Cleanup trap
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trap "cd /; fusermount -u -z $DIR2; rm -rf $DIR1 $DIR2" EXIT
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echo "Starting loop"
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N=1
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while true; do
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t1=$SECONDS
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tar xf /tmp/linux-3.0.tar.gz
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rm -Rf linux-3.0
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t2=$SECONDS
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delta=$((t2-t1))
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rss=$(grep VmRSS /proc/$LOOPBACKPID/status)
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echo "Iteration $N done, $delta seconds, $rss"
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let N=$N+1
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sleep 1
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kill -USR1 $LOOPBACKPID
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done
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