[Info-vax] How to read system time from cluster node
jo jimbo
jojimbo at sbcglobal.net
Thu Mar 26 13:33:03 EDT 2009
"JF Mezei" <jfmezei.spamnot at vaxination.ca> wrote in message
news:00141dcd$0$16154$c3e8da3 at news.astraweb.com...
> Rogal wrote:
>
>> CONFIG SHOW TIME/OUT.... method is perfectly what I needed :).
>
> Note that SYSMAN does sequential queries to cluster nodes. The time
> difference between the queries may be minimal, but you should be aware
> of it.
That's not quite true in the case of the config commands. For example, in
the docs for config set time it is noted that:
"SYSMAN uses special processing in an OpenVMS Cluster environment to ensure
that all processors in the cluster are set to the same time. Because of
communication and processing delays, it is not possible to synchronize
clocks exactly. However, the variation is typically less than a few
hundredths of a second. If SYSMAN cannot set the time to within one half
second of the specified time, you receive a warning message that names the
node that failed to respond quickly enough."
Regards, Jim
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