* Timo Sirainen <dovecot@dovecot.org>: > On Tue, 2009-10-13 at 21:38 +0100, Ed W wrote: > > Something I had been pondering recently (I started using a cell phone > > with imap idle support), was a previous poster mentioning the huge > > increase in battery life from turning off the radio for as long as > > possible. It appears that just turning on the radio (wifi or 3G) > > consumes much more energy than the transmitting of a few bytes of data > > after it's on. In particular synchronising certain types of infrequent > > transmissions may have a dramatic increase in battery life for mobile > > devices - I'm thinking mainly of the NOOPs when the connection is idling
Idling consumes lots of battery on mobiles, because it requires an active TCP session. Cell phone providers use a trick to circumvent that. They send a SMS (with a service signature that hides it from regular SMS readers) containing a trigger signal which causes the mobile to check for new mail. This uses less battery. You may want to check if you application/mobile supports this. p...@rick > > > > Is this something that could be implemented with the current > > architecture? Are there other types of application where synchronising > > "stuff" happening to multiple connections from the same client could be > > helpful? > > No matter how many times I read the above, I've no idea what you're > trying to ask. :) This seems like entirely a client-dependent issue and > Dovecot can't much alter clients' behavior. Unless you're talking about > running Dovecot on a cell phone?..
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