1 files changed, 23 insertions, 0 deletions
diff --git a/scripts/oe-time-dd-test.sh b/scripts/oe-time-dd-test.sh
new file mode 100644
index 00000000000..970a86dff08
--- /dev/null
+++ b/scripts/oe-time-dd-test.sh
@@ -0,0 +1,23 @@
+#!/bin/sh
+#
+# oe-time-dd-test records how much time it takes to 
+# write <count> number of kilobytes to the filesystem.
+# It also records the number of processes that are in
+# running (R), uninterruptible sleep (D) and interruptible
+# sleep (S) state from the output of "top" command.
+# The purporse of this script is to find which part of
+# the build system puts stress on the filesystem io and
+# log all the processes.
+
+usage() {
+        echo "Usage: $0 <count>"
+}
+
+if [ $# -ne 1 ]; then
+        usage
+        exit 1
+fi
+
+uptime
+/usr/bin/time -f "%e" dd if=/dev/zero of=foo bs=1024 count=$1 conv=fsync
+top -b -n 1 | grep -v "0      0      0" | grep -E ' [RSD] ' | cut -c 46-47 | sort | uniq -c