From 5568370030aad8cd6403943c2e4252aac65dac50 Mon Sep 17 00:00:00 2001
From: luto <m@luto.at>
Date: Thu, 28 Feb 2019 09:22:41 +0100
Subject: do not lock up a CPU when running qrunner --runner=All

When running qrunner --runner=All on a non-busy system, qrunner starts the runners in an endless loop; eating up a full CPU core doing nothing. This changes the behavior so qrunner sleeps in between runs.

https://mail.python.org/pipermail/mailman-users/2004-September/039401.html
---
 bin/qrunner | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'bin/qrunner')

diff --git a/bin/qrunner b/bin/qrunner
index 0ca2f993..911276e3 100644
--- a/bin/qrunner
+++ b/bin/qrunner
@@ -75,6 +75,7 @@ operation.  It is only useful for debugging if it is run separately.
 import sys
 import getopt
 import signal
+import time
 
 import paths
 from Mailman import mm_cfg
@@ -268,6 +269,8 @@ def main():
                 qrunner.run()
             if once:
                 break
+            if mm_cfg.QRUNNER_SLEEP_TIME > 0:
+                time.sleep(mm_cfg.QRUNNER_SLEEP_TIME)
         syslog('qrunner', 'Main qrunner loop exiting.')
     # All done
     sys.exit(loop.status)
-- 
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