concurrency(?) in rpc:multicall()
Tue Jun 27 15:19:38 CEST 2006
The meaning is that the requests are all sent before even trying to
receive an answer. The sequentioal alternative is to send a request,
wait for the answer, send the next request, and so on.
On 6/27/06, HP Wei <> wrote:
> According to the manual,
> It is semantically the same as iteratively making a series
> of RPCs on all the nodes,
> but the multicall is faster as all the requests
> are sent at the same time...
> I do NOT understand the last part:
> all the requests are sent at the same time
> I trace the source code for rpc:multicall().
> It boils down to gen_server:send_nodes(),
> whose function head reads:
> send_nodes([Node|Tail], ...)
> Apparently, multicall sends out the requests to the
> target processes 'one by one' (not at the same time).
> Is there a typo in the manual for rpc:multicall() ???
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