[CI] Adaptive mining timeout, depending on available CPU power

Printing also available RAM. Add comprehensive description.

tests/functional_tests/util_resources.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+
+# Copyright (c) 2021 The Monero Project
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice, this list of
+#    conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice, this list
+#    of conditions and the following disclaimer in the documentation and/or other
+#    materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors may be
+#    used to endorse or promote products derived from this software without specific
+#    prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""
+    Help determine how much CPU power is available at the given time
+    by running numerical calculations
+"""
+
+from __future__ import print_function
+import subprocess
+import psutil
+
+def available_ram_gb():
+    ram_bytes = psutil.virtual_memory().available
+    kilo = 1024.0
+    ram_gb = ram_bytes / kilo**3
+    return ram_gb
+
+def get_time_pi_seconds(cores):
+    app_path = './cpu_power_test'
+    time_calc = subprocess.check_output([app_path, str(cores)])
+    decoded = time_calc.decode('utf-8')
+    miliseconds = int(decoded)
+
+    return miliseconds / 1000.0