AFAIK, the checks in one uxmon-net* file are executed one AFTER another (serial). but you can split the check to several config files. for every config file one client process will be started. in this way you can run some checks in parallel.
On Thu, 09 Sep 2004 15:43:49 +0200
Tom Van Overbeke <suppressed> wrote:
> Hi,
>
> We need to monitor some 30 servers all located in remote sites. we want the
> monitoring server to check if these servers respond to a ping.
>
> my question: is the internal 'ping' check executed in serial (one after the
> other) or in parallel ? (can't test for the moment due to lack of a proper
> testing environment, and the description of the 'ping' check doesn't mention
> this.)
>
> The reason i ask is that - in big brother - we have had very slow updates on
> the monitoring screen because the ping check was executed one server at a
> time, and if a few servers where down, the ping timeout for these servers
> caused a big delay in the update of the monitoring screen (it took a very
> long time before we saw that the 'conn' table displayed a red alert for the
> server that was down. this was especially the case when it was our own
> site - the site where the monitoring server was located - that was isolated
> from the rest because in this case, we had to wait for the aggregated ping
> timeout of some 30+ servers before the monitoring server would update its
> 'conn' column.
>
> If these ping checks could be executed in parallel (send out the ping to all
> the servers at once, and wait for all the ping answers to be received), this
> delay could be greatly reduced.
>
> I hope I make some sense here.
>
>
> thx,
>
> Tom.
>
>
>
>
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