From 8b3f327df03d2ca530d094342710ff3f75ae3934 Mon Sep 17 00:00:00 2001
From: Rick Harris <rconradharris@gmail.com>
Date: Thu, 22 Mar 2012 23:50:36 +0000
Subject: Add periodic_fuzzy_delay option.

Fixes bug 962665

This random delay is intended to reduce the stampeding behavior
associated with periodic tasks when compute workers are restarted in
unison across a cluster.

Change-Id: Ie3771d94af29049061c129b8ea562ee447a61771
---
 nova/utils.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'nova/utils.py')

diff --git a/nova/utils.py b/nova/utils.py
index 819929a81..29df28cea 100644
--- a/nova/utils.py
+++ b/nova/utils.py
@@ -687,13 +687,14 @@ class LoopingCall(object):
         self.f = f
         self._running = False
 
-    def start(self, interval, now=True):
+    def start(self, interval, initial_delay=None):
         self._running = True
         done = event.Event()
 
         def _inner():
-            if not now:
-                greenthread.sleep(interval)
+            if initial_delay:
+                greenthread.sleep(initial_delay)
+
             try:
                 while self._running:
                     self.f(*self.args, **self.kw)
-- 
cgit