Re: [Dspace-tech] Browse by author is very slow, v. 1.4.2
Hi Joseph, There was a memory leak in the Browse function in version 1.3.2 which may have persisted into 1.4 but has disappeared with the rewritten Browse function in 1.5. It does cause a gradual degradation in responses for us. In order to get round it we have to restart Tomcat each night to free up the memory. Not ideal but its just a workaround until we upgrade. Cheers, Robin. Robin Taylor Main Library University of Edinburgh Tel. 0131 6515208 > -Original Message- > From: Joseph Greene [mailto:joseph.gre...@ucd.ie] > Sent: 08 June 2009 15:48 > To: dspace-tech@lists.sourceforge.net > Subject: [Dspace-tech] Browse by author is very slow, v. 1.4.2 > > Hello, > > My browse-by-author is going very slowly. I'm on version > 1.4.2. Does anyone have that fixed? Can't seem to find > anything in the archive other than rumours of memory leaks. > Any pointers? > > Many thanks, > > Joseph Greene > Institutional Repository Project Manager > 325 James Joyce Library > University College Dublin > Belfield, Dublin 4 > > 353 (0)1 716 7398 > joseph.gre...@ucd.ie > http://irserver.ucd.ie/dspace/ > > > > -- > > OpenSolaris 2009.06 is a cutting edge operating system for > enterprises looking to deploy the next generation of Solaris > that includes the latest innovations from Sun and the > OpenSource community. Download a copy and enjoy capabilities > such as Networking, Storage and Virtualization. > Go to: http://p.sf.net/sfu/opensolaris-get > ___ > DSpace-tech mailing list > DSpace-tech@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dspace-tech > > > -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
Re: [Dspace-tech] Browse by author is very slow, v. 1.4.2
Hi Joseph, > Hello, > > My browse-by-author is going very slowly. I'm on version 1.4.2. Does anyone > have that fixed? Can't seem to find anything in the archive other than > rumours of memory leaks. Any pointers? > How many items/authors do you have in the database? And what sort of load times are you seeing? The browse in 1.4.2 did "by author" by using a SELECT DISTINCT query over a potentially very large table, which can result in extreme poor performance in generating the user interface. As the number of authors scaled by the number of items becomes large, this process becomes very slow indeed, especially if there are author names which appear on multiple items. This was the main reason for replacing the browse system in v1.5, which is considerably more scalable. If you can, you should upgrade to the latest version of DSpace, which will eliminate this problem. Cheers, Richard -- Richard Jones Head Repository Systems Architect, Symplectic Limited e: rich...@symplectic.co.uk t: 0845 026 4755 t: +44 (0)207 7334036 w: http://www.symplectic.co.uk/ -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
[Dspace-tech] Browse by author is very slow, v. 1.4.2
Hello, My browse-by-author is going very slowly. I'm on version 1.4.2. Does anyone have that fixed? Can't seem to find anything in the archive other than rumours of memory leaks. Any pointers? Many thanks, Joseph Greene Institutional Repository Project Manager 325 James Joyce Library University College Dublin Belfield, Dublin 4 353 (0)1 716 7398 joseph.gre...@ucd.ie http://irserver.ucd.ie/dspace/ -- OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get ___ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
