1 files changed, 106 insertions, 0 deletions
diff --git a/scripts/oe-time-dd-test.sh b/scripts/oe-time-dd-test.sh
new file mode 100755
index 0000000000..81748b8c9e
--- /dev/null
+++ b/scripts/oe-time-dd-test.sh
@@ -0,0 +1,106 @@
+#!/bin/bash
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+# 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 "$0 is used to detect i/o latency and runs commands to display host information."
+	echo "The following commands are run in order:"
+	echo "1) top -c -b -n1 -w 512"
+	echo "2) iostat -y -z -x 5 1"
+	echo "3) tail -30 tmp*/log/cooker/*/console-latest.log to gather cooker log."
+	echo " "
+	echo "Options:"
+	echo "-c | --count <amount>		dd (transfer) <amount> KiB of data within specified timeout to detect latency."
+	echo "				Must enable -t option."
+	echo "-t | --timeout <time>		timeout in seconds for the <count> amount of data to be transferred."
+	echo "-l | --log-only			run the commands without performing the data transfer."
+	echo "-h | --help			show help"
+
+}
+
+run_cmds() {
+    echo "start: top output"
+	top -c -b -n1 -w 512
+	echo "end: top output"
+	echo "start: iostat"
+	iostat -y -z -x 5 1
+	echo "end: iostat"
+	echo "start: cooker log"
+	tail -30 tmp*/log/cooker/*/console-latest.log
+	echo "end: cooker log"
+}
+
+if [ $# -lt 1 ]; then
+	usage
+	exit 1
+fi
+
+re_c='^[0-9]+$'
+#re_t='^[0-9]+([.][0-9]+)?$'
+
+while [[ $# -gt 0 ]]; do
+	key="$1"
+
+	case $key in
+		-c|--count)
+			COUNT=$2
+			shift
+			shift
+			if ! [[ $COUNT =~ $re_c ]] || [[ $COUNT -le 0 ]] ; then
+				usage
+				exit 1
+			fi
+			;;
+		-t|--timeout)
+			TIMEOUT=$2
+			shift
+			shift
+			if ! [[ $TIMEOUT =~ $re_c ]] || [[ $TIMEOUT -le 0 ]] ; then
+				usage
+				exit 1
+			fi
+			;;
+		-l|--log-only)
+			LOG_ONLY="true"
+			shift
+			shift
+			;;
+		-h|--help)
+			usage
+			exit 0
+			;;
+		*)
+			usage
+			exit 1
+			;;
+	esac
+done
+
+
+if [ "$LOG_ONLY" = "true" ] ; then
+    uptime
+    run_cmds
+    exit
+fi
+
+if [ -z ${TIMEOUT+x} ] || [ -z ${COUNT+x} ] ; then
+    usage
+    exit 1
+fi
+
+uptime
+echo "Timeout used: ${TIMEOUT}"
+timeout ${TIMEOUT} dd if=/dev/zero of=oe-time-dd-test.dat bs=1024 count=${COUNT} conv=fsync
+if [ $? -ne 0 ]; then
+    run_cmds
+fi