This is a simple script to compare failures across runs.
Given files containing stdout from several runs, each of which contains
a Failures: line, it will print a table of all failures for each run.
Test subdir names are abbreviated for compactness, i.e. generic->g.
For 7 results files named test 1 through test 7:
# compare-fail.sh test*
Failures:
g/075 g/082 g/209 g/233 g/270 g/388 x/004 x/073 x/076
-----------------------------------------------------
g/082 g/233 x/004 x/073 test1
g/082 g/233 x/004 x/073 x/076 test2
g/082 x/004 x/073 x/076 test3
g/082 g/388 x/004 x/073 test4
g/082 g/270 x/004 x/073 test5
g/082 x/004 x/073 test6
g/075 g/082 g/209 g/233 x/004 x/073 test7
This lets us easily spot unique failures and outliers.
This could be enhanced to output CSV etc, but for now I think it's
helpful to visualize changes in failures across multiple runs.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---
V2: not sure why I had the commit log in so few columns ;)
That's the only change.
diff --git a/README b/README
index 400e902..3213d02 100644
--- a/README
+++ b/README
@@ -272,6 +272,9 @@ Pass/failure:
The elapsed time for the most recent pass for each test is kept
in "check.time".
+ The compare-failures script in tools/ may be used to compare failures
+ across multiple runs, given files containing stdout from those runs.
+
__________________
SUBMITTING PATCHES
__________________
diff --git a/tools/compare-failures b/tools/compare-failures
new file mode 100755
index 0000000..13b07b9
--- /dev/null
+++ b/tools/compare-failures
@@ -0,0 +1,67 @@
+#!/bin/bash
+
+# Compare test failures across runs
+#
+# Takes multiple "results" files as arguments, comprised of the
+# stdout from a ./check run, each containing a Failures: line.
+#
+# Outputs a table of failures for comparison across runs
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2017 Red Hat, Inc. All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#-----------------------------------------------------------------------
+#
+
+filter_names() {
+ sed -e s/btrfs/b/ \
+ -e s/cifs/c/g \
+ -e s/f2fs/f/g \
+ -e s/generic/g/g \
+ -e s/overlay/o/g \
+ -e s/shared/s/g \
+ -e s/udf/u/g \
+ -e s/xfs/x/g
+}
+
+# ALLFAILURES: A B C D E F G
+# THESEFAILURES: A C D G
+
+# We want to print the header (ALLFAILURES) and then
+# if a run didn't fail a particular test, print spaces instead
+
+# All tests that failed in any run, all on one line, unique
+ALLFAILURES=`grep -h ^Failures: $* \
+ | tr " " "\n" \
+ | sort | uniq \
+ | filter_names \
+ | tr "\n" " " \
+ | sed -e "s/^Failures: //g"`
+
+# Header
+echo "Failures:"
+echo $ALLFAILURES
+echo $ALLFAILURES | sed -e "s/./-/g"
+
+# Per-file failures
+for FILE in $*; do
+ THESEFAILURES=`grep ^Failures: $FILE | filter_names`
+ for FAILURE in $ALLFAILURES; do
+ CELL=`echo $THESEFAILURES \
+ | grep -wo "$FAILURE" || echo $FAILURE | sed -e "s/./ /g"`
+ echo -n "$CELL "
+ done
+ echo $FILE
+done
--
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