278539 - non-autosynced IMAP server performs badly because of all folders get checked in one blast at the end of the check-for-new-mail delay. Need more granularity for check-for-new-mail delay

Status: NEW

(MailNews Core :: Networking: IMAP, enhancement)

Description

[6e77a 70 6e 6e7a]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 StumbleUpon/1.999
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 StumbleUpon/1.999

IMAP server performs badly because of all folders get checked in one blast at
the end of the check-for-new-mail delay.  TB should either divide the delay by
the number of folders or provide a check-for-new-mail delay per folder.

TB should ultimately add a new feature to the folder-subscription screen. 
Besides the existing checkbox that subscribes to each folder, it should also
provide a checkbox to check that folder for new mail and a check-for-new-mail
delay.  The rationale is that TB doesn't need to check some folders as often as
others, and TB wouldn't be "out to lunch" when I want to read an important
message.  For example, TB should poll a "Likely Spam" folder less often than a
"Friends" folder.

Perhaps you could split this into two bugs.  One for an easier, short-term fix
that divides the delay by the folders, and another for a longer-term change to
the folder-subscription screen.


Reproducible: Always

Steps to Reproduce:
n/a
Actual Results:  
n/a

Expected Results:  
n/a

Comment 1

[Gervase Markham [:gerv]]

This is an automated message, with ID "auto-resolve01".

This bug has had no comments for a long time. Statistically, we have found that
bug reports that have not been confirmed by a second user after three months are
highly unlikely to be the source of a fix to the code.

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Comment 2

[Gervase Markham [:gerv]]

This bug has been automatically resolved after a period of inactivity (see above
comment). If anyone thinks this is incorrect, they should feel free to reopen it.

Comment 3

[6e77a 70 6e 6e7a]

Still hoping someone will implement this.

Comment 4

[Wayne Mery (:wsmwk)]

David, wontfix?  randomize?
6e77a doesn't state what precise conditions are a problem for the server.  

Comment 5

[6e77a 70 6e 6e7a]

Wayne, I don't understand what information you're looking for.

Comment 6

[Wayne Mery (:wsmwk)]

you say "IMAP server performs badly".  how do you know this?  how *exactly* is your server taking a performance hit?  what traffic is now occurring that's taxing the server that your suggestion would avoid?

Comment 7

[Steve Simms]

Changing from "major" to "enhancement".  It might be worth changing the summary to something like "allow check-for-new-mail interval to be set per-folder" (I haven't checked to see if that would be a duplicate).

Regarding the short-term fix, I don't think that's a good idea -- let's say you have 120 folders with "check for new mail" set, with a 2-minute update.  Then it would theoretically need to start checking a folder every second, and have to track if it fell behind, or something like that.  Seems messy to me.

Comment 8

[David :Bienvenu]

the new imap auto sync stuff makes this somewhat less important, as it updates folder on idle, but no more frequently than the check for new mail interval. Assigning to nobody, though this might be wontfix.