From mboxrd@z Thu Jan  1 00:00:00 1970
From: rlane@club.cc.cmu.edu (Rich Lane)
Date: Thu, 01 Oct 2009 13:02:18 -0400
Subject: [sup-talk] [PATCH] xapian: do less work for update_message_state
In-Reply-To: <1254404707-sup-9253@masanjin.net>
References: <1252867449-30734-1-git-send-email-rlane@club.cc.cmu.edu>
	<1254339542-sup-886@masanjin.net> <1254341186-sup-4357@zyrg.net>
	<1254404707-sup-9253@masanjin.net>
Message-ID: <1254416360-sup-8957@zyrg.net>

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.