On Wed, Aug 01, 2007 at 09:49:26AM -0700, Sergey Chechelnitskiy wrote: Hi Sergey, > > I have a flat directory with a lot of small files inside. And I have a java > application that reads all these files when it starts. If this directory is > located on ZFS the application starts fast (15 mins) when the number of files > is around 300,000 and starts very slow (more than 24 hours) when the number > of files is around 400,000. > > The question is why ? > Let's set aside the question why this application is designed this way. > > I still needed to run this application. So, I installed a linux box with XFS, > mounted this XFS directory to the Solaris box and moved my flat directory > there. Then my application started fast ( < 30 mins) even if the number of > files (in the linux operated XFS directory mounted thru NSF to the Solaris > box) was 400,000 or more. > > Basicly, what I want to do is to run this application on a Solaris box. Now I > cannot do it.
Just a rough guess - this might be a Solaris threading problem. See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6518490 So perhaps starting the app with -XX:-UseThreadPriorities may help ... Regards, jel. -- Otto-von-Guericke University http://www.cs.uni-magdeburg.de/ Department of Computer Science Geb. 29 R 027, Universitaetsplatz 2 39106 Magdeburg, Germany Tel: +49 391 67 12768 _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
