[ofa-general] RE: How fast to get RDMA_CM_EVENT_DISCONNECTED ?

Roland Dreier rdreier at cisco.com
Thu Apr 12 08:26:12 PDT 2007


 > Thanks for the suggestion. What is the minimum safe value of timeout for
 > typically IB network with 2-3 level of switch ?

It depends, since congestion may delay messages for quite a while.
Probably a timeout of 100 milliseconds or so works pretty well.  Of
course there is a tradeoff here between false positives (killing
connections because of transient conditions) and reaction time, which
you'll have to tune for yourself.



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