On Monday, 19 October 2009 at 21:16, Jeffrey Ratcliffe wrote: > On Sat, Oct 17, 2009 at 02:04:19PM +0200, Christian Brabandt wrote: > > Usually mutt works okay using IMAP over GPRS and header/message caching > > enabled. Sometimes it's slow, when the connection has a long delay and > > there is no data coming in. I have noticed that a couple of times, when > > using mutt in the train and the train was going through a tunnel. > > Thanks for all the suggestions. > > I had header and message caching enabled, and adding imap_idle made no > difference. > > What I don't understand is why the slowness is per key-press. I was > expecting to be able to tag/move up and down the index normally, and > when reading a message or deleting or moving a bunch of messages to > have to wait. But tag/move is 15-20s per press.
Mutt is polling mailboxes for new mail too frequently. If you run with -d2 and tail ~/.muttdebug0, you'll see the traffic. Pressing a key wakes up mutt, and if it's been more than $mail_check seconds it'll go poll all your mailboxes before doing anything else. I'd recommend raise mail_check to 120 to poll mailboxes every two minutes instead of every 5 seconds (the default).
