Re: Exmh 2.7 Flist much slower?

On Thu, 30 Dec 2004 11:02:43 PST, John Beck said:

> Brent> I found some simple optimizations in mh.tcl MhReadSequences that
> Brent> improved my flist time from 18 seconds to under 1 second.

> Yes, it seems faster, though it's not clear how much.  It will be more
> obvious (for me) only after I start up with a ton of unread mail, which
> usually only happens after logging in after being away for a while.

Weirdness indeed. I have 160 or so folders, 32 have unread mail in them.  About
217K messages total, about 15K unread.  flist's were taking 20-30 seconds
sometimes for me.  I did a cvs update, and flists were down to 7 seconds.  The
odd thing is that the *old* code (Oct 19 datestamp on mh.tcl) is now down to 7
seconds as well.  

> There does appear to be such a something, which would be the ftoc (i.e. scan)
> cache: I have
> 
> *ftextLines:    14
> 
> in my defaults file but the new version had it much bigger than that.  By
> playing with the number in Preferences, I observed a formula something like
> 	20 + (n / 2)
> meaning that e.g. with n set to 14, there would actually be 27 lines in the
> display, though the baseline of 20 may have been a little smaller, and there
> were some oddities with n = 0 or 1.  I did not fully understand the diffs to
> exwin.tcl, but by backing out its changes (i.e., restoring the 2.7.0 version)
> I got back the behavior I'm used to.

I noticed that as well - I never *did* figure out if I did that when I added the
code to support separate panes for the message display and flist, or if it was
broken before that.  It's tied into the whole resize-the-pane code - it looks
like the ftextLines value doesn't *really* do much, because the flist pane gets
built after and then there's all the 'pack' calls.

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