1 files changed, 28 insertions, 0 deletions
diff --git a/coin/provisioning/common/macos/telegraf-ioping.sh b/coin/provisioning/common/macos/telegraf-ioping.sh
new file mode 100755
index 00000000..9b6d3851
--- /dev/null
+++ b/coin/provisioning/common/macos/telegraf-ioping.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+#Copyright (C) 2023 The Qt Company Ltd
+#SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+# Measure I/O latency once, return data in InfluxDB format
+#
+# Run one ioping command for read, and one for write.
+# Each one sends 3 requests and reports the minimum time, in nanoseconds.
+# (Because of limitations of ioping, we can't just send one request and get
+#  the number back in the batch format. Additionally, the number seems to be
+#  fluctuating quite a bit so taking the smallest number out of 3 requests is
+#  stabilising it a bit.)
+
+
+set -e
+
+[ -z "$1" ] && echo "$0 takes a path as a first argument" && exit 1
+
+# Try to run in high priority to avoid slow-downs because of
+# factors other than I/O.
+renice  -n -10 -p $$  >/dev/null 2>&1 ||  true
+
+
+rlatency="$(/usr/local/bin/ioping -B -k -c 3 -i 0.1     "$1" | cut -d " " -f 5)"
+wlatency="$(/usr/local/bin/ioping -B -k -c 3 -i 0.1 -W  "$1" | cut -d " " -f 5)"
+
+printf "ioping,path=$1 read_latency_ns=%u,write_latency_ns=%u\n" \
+       "$rlatency" "$wlatency"