Tickets :: Comment on [#12705] Rate limit polling for new mail notifications

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Comment	> In my IMAP account, I have a fair number of folders that need to be > polled for new messages (about 25) as I use Sieve to sort messages > upon arrival. This means checking for new messages is a relatively > expensive operation. > > When 'Display notification when new mail arrives?' in the Mail > preferences is selected, it looks like this check is performed for > each POST request. This means that if multiple POST requests are send > more or less simultaneously, this check is run many times in > parallel. For instance, if in a month view of Kronolith I move to the > next month, 13 POST requests are fired off within a few milliseconds > (in my agenda there are six calenders, five address books, one > tasklist and one holidays). Each of these will run > > horde/services/ajax.php/kronolith/listEvents > > All in all this takes approximately 10 seconds, during which time the > check for new messages runs 13 times (pretty much in parallel). If I > disable the new mail notifications, the same action takes less than 2 > seconds (I made sure these aren't cached results). > > It would be nice if there was a preference that would allow to > prevent polling for new messages if less than 'X' seconds have passed > since the last poll was started. This would prevent running polls in > parallel, fighting for attention from Dovecot and which in the end is > just a waste of resources.
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