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-rw-r--r--Documentation/extractloop.md294
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+# extractloop.bash results
+
+What the extractloop stress test does is (top comment in `extractloop.bash`):
+
+```
+# Mount a gocryptfs filesystem somewhere on /tmp, then run two parallel
+# infinite loops inside that do the following:
+# 1) Extract linux-3.0.tar.gz
+# 2) Verify the md5sums
+# 3) Delete, go to (1)
+#
+# This test is good at discovering inode-related memory leaks because it creates
+# huge numbers of files.
+```
+
+Memory usage stabilises at 119MiB, we do not run of fds,
+and the interation time is stable at 37 seconds. The test
+runs slower in the beginning due to xfstests running in
+parallel on the test machine.
+
+Test output (somewhat trimmed for brevity):
+
+```
+0 jakob@brikett:~/go/src/github.com/rfjakob/gocryptfs/tests/stress_tests$ date
+Sun Jan 21 19:48:34 CET 2018
+0 jakob@brikett:~/go/src/github.com/rfjakob/gocryptfs/tests/stress_tests$ gocryptfs -version
+gocryptfs v1.4.2-71-gf63ce35; go-fuse v20170619-24-g3d30ad6; 2018-01-20 go1.9.2
+0 jakob@brikett:~/go/src/github.com/rfjakob/gocryptfs/tests/stress_tests$ ./extractloop.bash
+Testing gocryptfs
+Test dir: /tmp/extractloop.bash.yp3
+[pid 23842] Starting loop
+[pid 23843] Starting loop
+[pid 23843] Iteration 1 done, 64 seconds, RSS 126268 kiB
+[pid 23842] Iteration 1 done, 64 seconds, RSS 126268 kiB
+[pid 23842] Iteration 2 done, 61 seconds, RSS 128512 kiB
+[pid 23843] Iteration 2 done, 62 seconds, RSS 128512 kiB
+[pid 23843] Iteration 3 done, 62 seconds, RSS 135564 kiB
+[pid 23842] Iteration 3 done, 63 seconds, RSS 135564 kiB
+[pid 23843] Iteration 4 done, 61 seconds, RSS 135564 kiB
+[pid 23842] Iteration 4 done, 63 seconds, RSS 135564 kiB
+[pid 23843] Iteration 5 done, 63 seconds, RSS 148592 kiB
+[pid 23842] Iteration 5 done, 62 seconds, RSS 148592 kiB
+[pid 23843] Iteration 6 done, 61 seconds, RSS 148592 kiB
+[pid 23842] Iteration 6 done, 62 seconds, RSS 148592 kiB
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+[pid 23842] Iteration 7 done, 64 seconds, RSS 148592 kiB
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+[pid 23842] Iteration 8 done, 65 seconds, RSS 155412 kiB
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+[pid 23842] Iteration 11 done, 64 seconds, RSS 155412 kiB
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+[pid 23842] Iteration 12 done, 64 seconds, RSS 155412 kiB
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+[pid 23842] Iteration 15 done, 60 seconds, RSS 161136 kiB
+[pid 23843] Iteration 15 done, 67 seconds, RSS 161136 kiB
+[pid 23842] Iteration 16 done, 63 seconds, RSS 161136 kiB
+[pid 23843] Iteration 16 done, 64 seconds, RSS 161136 kiB
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+[pid 23843] Iteration 17 done, 62 seconds, RSS 161136 kiB
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+[pid 23843] Iteration 20 done, 68 seconds, RSS 161136 kiB
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+[pid 23842] Iteration 22 done, 36 seconds, RSS 161380 kiB
+[pid 23843] Iteration 22 done, 37 seconds, RSS 161380 kiB
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+[pid 23843] Iteration 23 done, 37 seconds, RSS 161380 kiB
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+[pid 23843] Iteration 30 done, 37 seconds, RSS 141320 kiB
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+[pid 23843] Iteration 34 done, 37 seconds, RSS 141320 kiB
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+[pid 23842] Iteration 39 done, 35 seconds, RSS 129656 kiB
+[pid 23843] Iteration 39 done, 36 seconds, RSS 129656 kiB
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+[pid 23843] Iteration 40 done, 37 seconds, RSS 129656 kiB
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+[pid 23843] Iteration 47 done, 37 seconds, RSS 126576 kiB
+[pid 23842] Iteration 48 done, 36 seconds, RSS 126576 kiB
+[pid 23843] Iteration 48 done, 36 seconds, RSS 126820 kiB
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+[pid 23843] Iteration 51 done, 36 seconds, RSS 124156 kiB
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+[pid 23842] Iteration 60 done, 36 seconds, RSS 120636 kiB
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+[pid 23843] Iteration 72 done, 36 seconds, RSS 118964 kiB
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+[pid 23843] Iteration 96 done, 36 seconds, RSS 120052 kiB
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+[...]
+[pid 23842] Iteration 1988 done, 36 seconds, RSS 119880 kiB
+[pid 23843] Iteration 1988 done, 37 seconds, RSS 119880 kiB
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+[pid 23842] Iteration 1994 done, 36 seconds, RSS 119728 kiB
+[pid 23843] Iteration 1994 done, 37 seconds, RSS 119728 kiB
+^C2018/01/21 12:00:43 Unimplemented opcode INTERRUPT
+
+130 jakob@brikett:~/go/src/github.com/rfjakob/gocryptfs/tests/stress_tests$
+```
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 20:02:35 +0000