[Alpine-info] Very slow IMAP CHECK
hubert at washington.edu
Mon Mar 16 09:32:00 PDT 2009
On Mon, 16 Mar 2009, Chris Wilson wrote:
> Checkpoint: 12:44:50.286490 Since 1st change: 302 secs idle: 16 secs
> tcptimeout: waited 15 seconds
> tcptimeout: waited 30 seconds
> IMAP 12:45:30 3/16 mm_log babble: Check completed.
> I haven't yet found a way to disable the use of the CHECK command. The
> IMAP documentation doesn't make it clear what its purpose is or why it
> actually needs to be run at all. Alpine seems to provide no way to disable
> or control it. Does anyone have any ideas before I patch my alpine to
> disable it completely?
> Cheers, Chris.
The reason that alpine does the CHECK command is to sync the folder to
disk periodically, but since the IMAP documentation is vague it may be
that servers don't need the CHECK call or that the CHECK call does
something else (like check the validity of the mailbox, say).
The alpine call is pine_mail_check. You could easily disable it completely
there. The periodic call to pine_mail_check comes from
You could modify the check_point() routine to slow it down instead of
turning it off completely.
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