I'll reply to the larger question about caching of WikiTalk on 1.8 in a few minutes, but certainly the kind of thing that you list below is low-hanging fruit of the sweetest variety :-)
David > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:flexwiki- > [EMAIL PROTECTED] On Behalf Of Craig Andera > Sent: Thursday, August 30, 2007 6:18 AM > To: 'FlexWiki Users Mailing List' > Subject: Re: [Flexwiki-users] Performance analysis > > > namespace.Topics.SortBy > > { each | > > DateTime.Now.SpanBetween(each.LastModified) > > } > > OK, I think I can see why this is so slow. The issue is that > each.LastModified translates into a call of > Federation.GetTopicModificationTime. But when doing a SortBy, each > element > is going to be compared *many time* to its neighbors, resulting in > dozens > and dozens of calls into the Federation, with all the security checking > and > whatnot that implies. Even though it's hitting cache, it's still going > to be > expensive. > > The easy fix for this is to change methods like this (on TopicInfo): > > [ExposedMethod(ExposedMethodFlags.Default, "Answer a DateTime > inndicating > when the topic was last modified")] > public DateTime LastModified > { > get > { > return Federation.GetTopicModificationTime(TopicRevision); > } > } > > To something like this: > > [ExposedMethod(ExposedMethodFlags.Default, "Answer a DateTime > inndicating > when the topic was last modified")] > public DateTime LastModified > { > get > { > if (!_haveLastModified) > { > _lastModified = > Federation.GetTopicModificationTime(TopicRevision); > _haveLastModified = true; > } > > return _lastModified; > } > } > > Yeah, that should help *a lot*. Freakin' awesome if it does, too, > because > it's dead simple and doesn't require any architectural changes. :) > > I'll start making some of these changes today and see what effect it > has. > I'm extremely optimistic. > > > > ----------------------------------------------------------------------- > -- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > Flexwiki-users mailing list > Flexwiki-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flexwiki-users ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Flexwiki-users mailing list Flexwiki-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flexwiki-users
