On Mon, 21 Mar 2005 09:48:10 +0100, Serge Huber <[EMAIL PROTECTED]> wrote: > > Hi Michael, > > Michael Wechner wrote: > > > Edgar Poce wrote: > > > >> IMHO ... > >> > >> FileSystems > >> > >> - LocalFileSystem > >> . Slow on window boxes > > > > > > > > Why is it slow on Windows? (please apologize if I might have missed > > that explanation somehow) > > and how is it on UNIX/Linux? > > I did some tests on Windows, and posted results a few months ago in this > list. Basically the main problem is that NTFS directory creation > operations are really slow (I'm guessing it's the journalling that's > interfering here). I must also say that I was creating something like > over 10'000 files in my tests. > > > > > Does anyone have any actual figures (especially compared with CQFS)?
have a look at http://article.gmane.org/gmane.comp.apache.jackrabbit.devel/595. the results of those earlier tests showed that (on a windows box) ObjectPersistenceManager w/ CQFS is about 5-6 times faster than ObjectPersistenceManager w/ LocalFileSystem. the reason is that the windows file system really sucks when it comes to storing a very large number of small files & folders. cheers stefan > > I don't have figure against CQFS but I do have some against Object > serialization and my ORM persistence managers. The results are a bit > dated now but they should be indicative of the problem of slow file > creation under Windows. > > You can find the results of my tests here : > http://www.jahia.org/~loom/JackRabbit_Performance_Tests.pdf > > Please note these are not very scientific, I was mostly trying to check > if my ORM persistence managers where performing decently than actually > trying to spend a lot of time on testing procedures. > > Regards, > Serge Huber. >
