Andrew Boyd(deleted)
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RE: RE: Qnet Node detection
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Andrew Boyd(deleted)
03/04/2009 12:05 PM
post23493
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RE: RE: Qnet Node detection
> i am getting the notification after some time
> later like 1 or smthing.
But you ARE getting the EHOSTDOWN immediately
after the rmdir, correct?
> i want to get the notification within 1 sec
> what the option that i have to set.
One second is pretty tight - any transient
communication outage, network congestion or
busy high-priority threads may cause unnecessary
node downs with timeouts that tight!
Anyways, there are basically two sets of command
line options to control how fast qnet decides if
a node has disappeared.
One set of command line options has effect when
you are actually transmitting user data. They
are tx_ticks=X and tx_retries=XD.
The second set of command line options has effect
when there is NO user data being transmitted. They
are conn_up_idle=X and conn_up_retries.
Again, be sure to carefully re-test your ENTIRE
application after changing ANY qnet option, because
of unintended side effects.
--
aboyd
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