[Bug-mit-scheme] [bug #26961] imail is very slow handling large file folders

[Taylor R. Campbell]

URL:
  <http://savannah.gnu.org/bugs/?26961>

                 Summary: imail is very slow handling large file folders
                 Project: MIT/GNU Scheme
            Submitted by: riastradh
            Submitted on: Sun 05 Jul 2009 15:34:45 GMT
                Category: imail
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Suboptimal behavior
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                Keywords: 

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Details:

Opening a Unix mail file folder with fourteen thousand messages takes well
over a minute or two on my 2 GHz MacBook.  Closing it, after modifying it,
takes well over five minutes.  IMAIL should be cleverer, either by keeping a
cache on disk or by being clever about incremental parsing of the file, and
perhaps mmapping it into memory rather than reading it byte-by-byte.  When
writing, IMAIL should seek to the part of the file that needs rewriting, which
requires recording the messages that are dirty.




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