From: Willy Tarreau <w@1wt.eu>
Date: Sun, 14 Oct 2007 21:09:26 +0000 (+0200)
Subject: [DOC] document spread-checks
X-Git-Tag: v1.3.13~20
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fe255b706183b4553d5ad75fc9b25d3c0c0827b1;p=thirdparty%2Fhaproxy.git

[DOC] document spread-checks
---

diff --git a/doc/configuration.txt b/doc/configuration.txt
index 86f3f3325c..994df07e2c 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -47,6 +47,7 @@ The following keywords are supported in the "global" section :
    - nopoll
    - nosepoll
    - tune.maxpollevents
+   - spread-checks
   
  * Debugging
    - debug
@@ -164,6 +165,13 @@ tune.maxpollevents <number>
   latency at the expense of network bandwidth, and increasing it above 200
   tends to trade latency for slightly increased bandwidth.
 
+spread-checks <0..50, in percent>
+  Sometimes it is desirable to avoid sending health checks to servers at exact
+  intervals, for instance when many logical servers are located on the same
+  physical server. With the help of this parameter, it becomes possible to add
+  some randomness in the check interval between 0 and +/- 50%. A value between
+  2 and 5 seems to show good results. The default value remains at 0.
+
 
 1.3) Debugging
 ---------------