Perhaps using one of these will help:
http://wiki.lib.sun.ac.za/index.php/SUNScholar/Optimisations#Java_Webapp_Performance
On 25 March 2013 17:28, TAYLOR Robin <robin.tay...@ed.ac.uk> wrote:
> Hi all,
>
> I'm in search of help. We have been suffering from a memory leak recently
> causing out-of-memory exceptions and *I think* the cause is this:-
>
> In DSpaceWebappServletFilter.doFilter() there is a call to
> requestService.startRequest() which in turn calls all registered
> RequestInterceptors, one of which is CachingServiceRequestInterceptor. This
> creates a 'cache map' for the current request. I assume the cache map
> should be removed when the request ends but that does not seem to be
> happening in all cases, causing the class CachingServiceImpl to grow
> inexorably until memory is exhausted. Going back to our starting point of
> DSpaceWebappServletFilter.doFilter() there is a call to
> requestService.endRequest() which should remove the cache map, but it does
> not appear to be invoked for all requests. Looking at web.xml for this
> filter I see...
>
> <filter-mapping>
> <filter-name>dspace.request</filter-name>
> <url-pattern>/*</url-pattern>
> <dispatcher>REQUEST</dispatcher>
> <dispatcher>FORWARD</dispatcher>
> <dispatcher>INCLUDE</dispatcher>
> </filter-mapping>
>
> It looks like only 'real' requests get their cache tidied up and not those
> generated by FORWARD or INCLUDE.
>
> So I think I know what is going wrong, but I don't know what is the right
> way to fix it. Any dspace-services experts out there able to help?
>
> Cheers, Robin.
>
> --
> The University of Edinburgh is a charitable body, registered in
> Scotland, with registration number SC005336.
>
>
>
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_d2d_mar
> _______________________________________________
> Dspace-devel mailing list
> Dspace-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/dspace-devel
>
--
*Hilton Gibson*
Systems Administrator
JS Gericke Library
Room 1025D
Stellenbosch University
Private Bag X5036
Stellenbosch
7599
South Africa
Tel: +27 21 808 4100 | Cell: +27 84 646 4758
http://library.sun.ac.za
http://scholar.sun.ac.za
http://ar1.sun.ac.za
http://aj1.sun.ac.za
------------------------------------------------------------------------------
Everyone hates slow websites. So do we.
Make your web apps faster with AppDynamics
Download AppDynamics Lite for free today:
http://p.sf.net/sfu/appdyn_d2d_mar
_______________________________________________
Dspace-devel mailing list
Dspace-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dspace-devel
