On Aug 3, 2014, at 6:30 PM, Ken Hornstein <kenh(_at_)pobox(_dot_)com> wrote:
Yeah. We'd store the original contents of the headers, of course, but they wouldn't go through any additional parsing until they were accessed.
Ah. I thought you were talking about a lazy evaluation parser. I don't think you are going to find any measurable savings in deferring much, if any, of the header parsing, even into complimentary formats. The measurements I did in the Cyrus IMAP server's MIME parser showed that that part of the code was in the noise compared to the I/O overhead. We were optimizing for response time across hundreds of transactions per second. I can't imagine how anyone using MH from the command line would ever notice this sort of tune-up. I'm all in favour of cleaning up the code, but let's not drive the process from a false premise. --lyndon
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