From e2fc922448086f13c4b5c421ea367c5a4ed54d97 Mon Sep 17 00:00:00 2001
From: Ivan Pepelnjak <ip@ipspace.net>
Date: Fri, 10 Feb 2023 18:45:14 +0100
Subject: [PATCH] timing: a script to measure device boot/config times

---
 timing/README.md    |  9 +++++++++
 timing/timing.sh    | 20 ++++++++++++++++++++
 timing/topology.yml |  7 +++++++
 3 files changed, 36 insertions(+)
 create mode 100644 timing/README.md
 create mode 100755 timing/timing.sh
 create mode 100644 timing/topology.yml

diff --git a/timing/README.md b/timing/README.md
new file mode 100644
index 0000000..f4d0ab5
--- /dev/null
+++ b/timing/README.md
@@ -0,0 +1,9 @@
+# Measure Virtual Device Startup Time
+
+The script in this directory was used to measure the time it takes to boot a network device and perform the minimal initial configuration.
+
+If you want to repeat the measurements:
+
+* [Install netlab](https://netsim-tools.readthedocs.io/en/latest/install.html)
+* [Build Vagrant boxes](https://netsim-tools.readthedocs.io/en/latest/labs/libvirt.html) for the networking devices you want to test
+* Execute `./timing.sh <list-of-devices>`
diff --git a/timing/timing.sh b/timing/timing.sh
new file mode 100755
index 0000000..8eedf3e
--- /dev/null
+++ b/timing/timing.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+#
+# Time how long it takes to spin up a virtual machine and do initial configuration
+#
+set -e
+if [ -z "$1" ]; then
+  echo "Specify device type"
+  exit 1
+fi
+for dut in $@; do
+  echo "Device: $dut"
+  netlab create -d $dut >/dev/null 2>/dev/null
+  echo -n "Starting the lab: "
+  /usr/bin/time -f "%E" bash -c 'netlab up --snapshot --no-config >/dev/null 2>/dev/null || echo "netlab up failed"'
+  echo -n "Device configuration: "
+  /usr/bin/time -f "%E" bash -c 'netlab initial >/dev/null 2>/dev/null || echo "netlab up failed"'
+  netlab down --cleanup >/dev/null 2>/dev/null
+  echo "... done"
+  echo ""
+done
diff --git a/timing/topology.yml b/timing/topology.yml
new file mode 100644
index 0000000..8b40151
--- /dev/null
+++ b/timing/topology.yml
@@ -0,0 +1,7 @@
+#
+# Lab topology used to test VM start times
+#
+nodes: [ dut ]
+
+links:
+- dut