From 3e48f954396d3e973ef2bbc3871ddbfba4327a0a Mon Sep 17 00:00:00 2001
From: David Wilson <dw@botanicus.net>
Date: Wed, 4 Jul 2018 15:22:18 +0000
Subject: [PATCH] tests: import cpu_load.py.

---
 tests/soak/cpu_load.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 tests/soak/cpu_load.py

diff --git a/tests/soak/cpu_load.py b/tests/soak/cpu_load.py
new file mode 100644
index 00000000..ed473b15
--- /dev/null
+++ b/tests/soak/cpu_load.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python
+"""
+Put the machine's CPUs under pressure to increase the likelihood of scheduling
+weirdness. Useful for exposing otherwise difficult to hit races in the library.
+"""
+
+import multiprocessing
+
+def burn():
+    while 1: pass
+
+mul = 2
+count = int(mul * multiprocessing.cpu_count())
+print count
+
+procs = [multiprocessing.Process(target=burn)
+         for _ in range(count)]
+
+for i, proc in enumerate(procs):
+    print([i])
+    proc.start()