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| -rwxr-xr-x | tests/stress_tests/loopback-mem.bash | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tests/stress_tests/loopback-mem.bash b/tests/stress_tests/loopback-mem.bash new file mode 100755 index 0000000..fa3b0e3 --- /dev/null +++ b/tests/stress_tests/loopback-mem.bash @@ -0,0 +1,45 @@ +#!/bin/bash +# +# Mount a loopback filesystem somewhere on /tmp, then run an +# infinite loop inside that does the following: +# 1) Extract linux-3.0.tar.gz +# 2) Delete +# 3) Get memory profile +# +# This test is good at discovering inode-related memory leaks because it creates +# huge numbers of files. + +set -eu + +# Setup dirs +cd /tmp +wget -nv --show-progress -c https://www.kernel.org/pub/linux/kernel/v3.0/linux-3.0.tar.gz +DIR1=$(mktemp -d /tmp/loopback-mem.XXX) +DIR2=$DIR1.mnt +mkdir $DIR2 + +# Mount +loopback -l -memprofile /tmp/lmem $DIR2 $DIR1 & +LOOPBACKPID=$(jobs -p) +sleep 1 +cd $DIR2 + +# Cleanup trap +trap "cd /; fusermount -u -z $DIR2; rm -rf $DIR1 $DIR2" EXIT + +echo "Starting loop" + +N=1 +while true; do + t1=$SECONDS + tar xf /tmp/linux-3.0.tar.gz + rm -Rf linux-3.0 + t2=$SECONDS + delta=$((t2-t1)) + rss=$(grep VmRSS /proc/$LOOPBACKPID/status) + echo "Iteration $N done, $delta seconds, $rss" + let N=$N+1 + sleep 1 + kill -USR1 $LOOPBACKPID +done + |