Re: [sup-talk] [PATCH] xapian: do less work for update_message_state

[Olly Betts <olly@survex.com>]

On 2010-02-04, Olly Betts <olly@survex.com> wrote:
> Olly Betts writes:
>> On 2009-10-01, Rich Lane <rlane@club.cc.cmu.edu> wrote:
>> > Excerpts from William Morgan's message of Thu Oct 01 09:46:20 -0400 2009:
>> >> Reformatted excerpts from Rich Lane's message of 2009-09-30:
>> >> > They're about 3 times faster on my machine with this patch. An
>> >> > optimization the Xapian devs have been planning to make (and that this
>> >> > patch is necessary to take advantage of) should increase performance
>> >> > much more.
>> >> 
>> >> Awesome. Out of curiousity, what's the optimization?
>> >
>> > replace_document currently deletes all the old postings and inserts new
>> > ones. It can be optimized to make the minimal set of modifications.
>> 
>> This is the ticket for it:
>> 
>> http://trac.xapian.org/ticket/250

This fix went into the recent Xapian 1.0.18 release (and also in 1.1.4, which
is a release candidate for 1.2.0).

Cheers,
    Olly

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