doc: update extractloop results

Update output and add a nice plot.

1 files changed, 38 insertions, 276 deletions

diff --git a/Documentation/extractloop.md b/Documentation/extractloop.md
index 62f9939..eca66bb 100644
--- a/Documentation/extractloop.md
+++ b/Documentation/extractloop.md
@@ -1,6 +1,11 @@
 # extractloop.bash results
 
-What the extractloop stress test does is (top comment in `extractloop.bash`):
+Memory usage stabilises at 141MiB, we do not run out of fds,
+and the iteration time is stable around 38 seconds:
+
+![](extractloop_plot_csv.png)
+
+What the extractloop stress test does is (top comment in `tests/stress_tests/extractloop.bash`):
 
 ```
 # Mount a gocryptfs filesystem somewhere on /tmp, then run two parallel
@@ -13,282 +18,39 @@ What the extractloop stress test does is (top comment in `extractloop.bash`):
 # huge numbers of files.
 ```
 
-Memory usage stabilises at 119MiB, we do not run out of fds,
-and the iteration 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):
-
+Test output (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 
+~/go/src/github.com/rfjakob/gocryptfs/tests/stress_tests$ ./extractloop.bash
+
+20803 (process ID) old priority 0, new priority 19
 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
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-[pid 23842] Iteration 39 done, 35 seconds, RSS 129656 kiB
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-[pid 23843] Iteration 47 done, 37 seconds, RSS 126576 kiB
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-[pid 23842] Iteration 64 done, 37 seconds, RSS 120116 kiB
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-[pid 23843] Iteration 83 done, 36 seconds, RSS 119068 kiB
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-[pid 23843] Iteration 84 done, 37 seconds, RSS 119044 kiB
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-[pid 23843] Iteration 96 done, 36 seconds, RSS 120052 kiB
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-[pid 23843] Iteration 120 done, 36 seconds, RSS 119668 kiB
-[pid 23842] Iteration 121 done, 37 seconds, RSS 119668 kiB
-[pid 23843] Iteration 121 done, 37 seconds, RSS 119668 kiB
-[pid 23842] Iteration 122 done, 36 seconds, RSS 119668 kiB
+Test dir: /tmp/extractloop_tmpdir/SMc
+'/tmp/extractloop.csv' -> '/tmp/extractloop_tmpdir/SMc.csv'
+[looper 2] Starting
+[looper 1] Starting
+[looper 2] Iteration 1 done, 42 seconds, RSS 36020 kiB
+[looper 1] Iteration 1 done, 42 seconds, RSS 36020 kiB
+[looper 2] Iteration 2 done, 40 seconds, RSS 45400 kiB
+[looper 1] Iteration 2 done, 40 seconds, RSS 45400 kiB
+[looper 1] Iteration 3 done, 40 seconds, RSS 53396 kiB
+[looper 2] Iteration 3 done, 40 seconds, RSS 53396 kiB
+[looper 1] Iteration 4 done, 39 seconds, RSS 64588 kiB
+[looper 2] Iteration 4 done, 40 seconds, RSS 64588 kiB
+[looper 1] Iteration 5 done, 40 seconds, RSS 64588 kiB
+[looper 2] Iteration 5 done, 39 seconds, RSS 64588 kiB
+[looper 1] Iteration 6 done, 39 seconds, RSS 71628 kiB
 [...]
-[pid 23842] Iteration 1988 done, 36 seconds, RSS 119880 kiB
-[pid 23843] Iteration 1988 done, 37 seconds, RSS 119880 kiB
-[pid 23842] Iteration 1989 done, 36 seconds, RSS 119880 kiB
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-[pid 23842] Iteration 1991 done, 36 seconds, RSS 119880 kiB
-[pid 23843] Iteration 1991 done, 36 seconds, RSS 119880 kiB
-[pid 23842] Iteration 1992 done, 37 seconds, RSS 119728 kiB
-[pid 23843] Iteration 1992 done, 36 seconds, RSS 119728 kiB
-[pid 23842] Iteration 1993 done, 36 seconds, RSS 119728 kiB
-[pid 23843] Iteration 1993 done, 37 seconds, RSS 119728 kiB
-[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$
+[looper 1] Iteration 945 done, 38 seconds, RSS 140832 kiB
+[looper 2] Iteration 946 done, 38 seconds, RSS 140832 kiB
+[looper 1] Iteration 946 done, 38 seconds, RSS 140832 kiB
+[looper 1] Iteration 947 done, 37 seconds, RSS 140832 kiB
+[looper 2] Iteration 947 done, 37 seconds, RSS 140832 kiB
+[looper 1] Iteration 948 done, 38 seconds, RSS 140832 kiB
+[looper 2] Iteration 948 done, 38 seconds, RSS 140832 kiB
+[looper 1] Iteration 949 done, 38 seconds, RSS 140832 kiB
+[looper 2] Iteration 949 done, 38 seconds, RSS 140832 kiB
+[looper 1] Iteration 950 done, 38 seconds, RSS 140832 kiB
+[looper 2] Iteration 950 done, 38 seconds, RSS 140832 kiB
+[looper 1] Iteration 951 done, 38 seconds, RSS 140832 kiB
+[looper 2] Iteration 951 done, 38 seconds, RSS 140832 kiB
 ```