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willhains / guicebox

Automatically exported from code.google.com/p/guicebox
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Ping and Heartbeat timeout & retry defaults #13

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
The default behaviour for ping and heartbeat to trigger node state changes can 
produce false 
failovers. It should be changed as follows (got some advice from a network 
engineer for these 
values).

The ping interval should be 1000ms, with a timeout of 3000ms, and a retry of 3 
times before 
triggering a disconnect (so 9+ seconds to trigger disconnect).

The heartbeat interval should also 1000ms, with a tolerance of 6 times before 
triggering a 
failover (so 6+ seconds to trigger failover).

It's also important for both that the interval be measured from the *end* of 
the last result, to 
avoid queuing up a large number of pings / heartbeats / expected heartbeats.

Related: Issue 5

Original issue reported on code.google.com by willhains on 18 Jun 2008 at 11:21

GoogleCodeExporter commented 9 years ago 
Fixed in r148.

Original comment by willhains on 13 Oct 2009 at 1:21