performance issue (imap spool on san)

Daniel Eckl deckl at
Thu Jul 27 09:36:00 EDT 2006

> My telnet client could do 'ls -lR /' when I log in, and cache it, but it
> doesn't :-)

If your telnet client would need several minutes to show you all files in case 
you are searching for a file you don't exactly know its name, then you would 
definitely prefer that it would do so.


> Am Donnerstag, 27. Juli 2006 14:45 schrieb Joseph Brennan: 
> --On Thursday, July 27, 2006 2:58 -0700 Nikola Milutinovic
> <alokin1 at> wrote:
> > Say you have a GUI IMAP client XxX. Say you start it up and click on the
> > INBOX. What would you desire/expect XxX to do?
> First I'd like it not to open inbox unless I do click on inbox (or unless
> I configured it to open inbox).  That's a pop holdover.  As if, what else
> would I be running a mail client for?  Well, with imap I might be wanting
> to check some other folder.
> When opening inbox, a client is usually configured to list new messages.
> If so it really needs only to fetch headers of new messages.  The rest do
> not matter unless the user wants to scroll back, and even then it might
> fetch only the next N messages back.
> Some clients actually open and cache headers of all subscribed folders.
> That does not scale on a system where users are advised to subscribe to
> many shared folders.
> My telnet client could do 'ls -lR /' when I log in, and cache it, but it
> doesn't :-)
> Joseph Brennan
> Columbia University Information Technology
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