bb-matrix: Fix min and max calculations

The BB and PM ranges were originally intended to use leading 0s to
ensure all the values were the same string length, making for nice log
filenames and columnar dat files. However, not everyone will do this -
especially if it isn't documented.

Document the intent. Make the generation and parsing of dat files robust
to either method.

(From OE-Core rev: 90dc44c8246f2a580fe4a41ce28c201e52307500)

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/scripts/contrib/bb-perf/bb-matrix.sh b/scripts/contrib/bb-perf/bb-matrix.sh
index b9edd5ff08..37721fe268 100755
--- a/scripts/contrib/bb-perf/bb-matrix.sh
+++ b/scripts/contrib/bb-perf/bb-matrix.sh
@@ -33,6 +33,8 @@
 #
 
 # The following ranges are appropriate for a 4 core system with 8 logical units
+# Use leading 0s to ensure all digits are the same string length, this results
+# in nice log file names and columnar dat files.
 BB_RANGE="04 05 06 07 08 09 10 11 12 13 14 15 16"
 PM_RANGE="04 05 06 07 08 09 10 11 12 13 14 15 16"
 
@@ -62,10 +64,11 @@ for BB in $BB_RANGE; do
                 echo "BB=$BB PM=$PM Logging to $BB_LOG"
 
                 # Export the variables under test and run the bitbake command
+                # Strip any leading zeroes before passing to bitbake
                 export BB_NUMBER_THREADS=$(echo $BB | sed 's/^0*//')
                 export PARALLEL_MAKE="-j $(echo $PM | sed 's/^0*//')"
                 /usr/bin/time -f "$BB $PM $TIME_STR" -a -o $RUNTIME_LOG $BB_CMD &> $BB_LOG
-                
+
                 echo "  $(tail -n1 $RUNTIME_LOG)"
                 echo -n "  Cleaning up..."
                 mv tmp/buildstats $RUNDIR/$BB-$PM-buildstats