hi Dr. Uwe Werner schrieb: > Hello Fellow-MoinMoiners! > > I was wondering if there is a difference in performance between > > (1) <<FullSearch(category:CategoryName title:Prefix-)>> > > and > > (2) <<FullSearch(title:Prefix- category:CategoryName)>> ??? > if you talk about xapian, I think there is no different, because all keywords/data are stored in a indexes/database... but maybe some core dev knows better. the normal moinmoin search is slow. don't use it for bigger wikies.
> Does category search actually open the page and read until the last > line is reached in order to check the category? If so, then I presume > (2) is faster because checking the name of a page (actually most > pages) and excluding it from the subsequent is a quicker thing than > finding categories. Is this correct? again with xapian search sure not! Because xapian use an own database for the indexes (http://xapian.org/docs/quickstart.html) so no need for open/reading every page. about the question for the querparser I do not know.. some moin-dev should know. What's about the intern "slow" moinmoin search don't know... it's anyway to slow if you start to have a wiki with more then a few hundred pages. > > The wiki in question is still small. Does someone have "empirical" > evidence -- or know the internals? > it's not only depend on the wiki size (pagecounts), more important is how your users use the wik, how many traffic you will have, how fast is your machine, are your pages full with attachment to download or only single text pages, etcetera. maybe you have to specific how big your wiki will be, how many concurrent users you will have, how many search in a minutes, etc.. so somebody can say someting... the only limit is that some filesystem (like ext3) only supporting 32'000 subdirectorys and I also would say more then 15'/20'000 Pages would be realy heavy. Maybe have a look at the ext4 (http://kernelnewbies.org/Ext4#head-97cbed179e6bcc48e47e645e06b95205ea832a68) or some other filesystems (e.g. xfs) in generaly: 1. use apache (or even a more lighter webserver) with wsgi 2. use xapain for search 3. try to tweak/tune your filesystem 4. add a lot of memory to your machine, 5. use fast harddisk with some raid 6. etcetera... see here: http://moinmo.in/HowTo/Tune%20Performance > BTW when is the cache in the "Cached" search version up-to-date? > as far as i know "caching" means only the result (the page itself), and not the search query. so if somebody add a new page you need to "refresh" to see this page... btw. there is a page on the wiki http://moinmo.in/PerformanceProposals but it is a bit outdated. hope it helps a bit... bye Marcel ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Moin-user mailing list Moin-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/moin-user
