Add script to record process metrics

kgryte · kgryte · commit 8a228ebbf2b1 · 2018-01-30T20:48:37.000-08:00
diff --git a/tools/ci/circle/process_metrics b/tools/ci/circle/process_metrics
@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+#
+# @license Apache-2.0
+#
+# Copyright (c) 2018 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Build script to log metrics in order to monitor process resource usage over time.
+
+# VARIABLES #
+
+# Define an output file to store metrics:
+log_file="${CIRCLE_ARTIFACTS}/process_metrics.txt"
+
+# Define an interval for logging metrics:
+interval='1s'
+
+
+# FUNCTIONS #
+
+# Defines an error handler.
+on_error() {
+	echo 'ERROR: An error was encountered during execution.' >&2
+	exit 1
+}
+
+# Polls the system for process metrics.
+#
+# $1 - poll interval
+# $2 - output log file
+poll() {
+	while true; do
+		ps -u ubuntu -eo pid,%cpu,%mem,rss,args,uname -w -w --sort=-%mem >> "$2";
+		echo '----------' >> "$2";
+		sleep "$1";
+	done
+}
+
+# Main execution sequence.
+main() {
+	poll "${interval}" "${log_file}"
+}
+
+# Set an error handler:
+trap 'on_error' ERR
+
+# Run main:
+main
