On Sun, Apr 17, 2011 at 6:10 PM, ThorstenB <bre...@gmail.com> wrote: > On 16.04.2011 21:16, Anders Gidenstam wrote: >> If I'm not mistaken the particles issue has been around since we got >> particles, so it is apparently not that bad (leak and race >> condition) in practice. > Ok, thanks! I've create a bug issue as a reminder, in case someone else > noticed the issue some day. > http://code.google.com/p/flightgear-bugs/issues/detail?id=305 > >>> Not sure, but I guess the issues with "Effect" objects is probably worse >>> than with particles. There's a larger number of Effect objects - and >>> each is connected to a texture (.rgb/.png images) - which may occupy a >>> lot of memory. Just by starting at KSFO, loads of KSFO terminal textures >>> - and textures of 15 different MP aircraft immediately stick in memory... >> Yes, the big textures will eat memory fast. Particle systems usually use >> small textures (the effect of the accumulation of particle system updaters >> is noticeable with wildfire, though - but you'd need a lot of MP aircraft >> passing through to generate anywhere near those numbers of particle >> systems). > The effect/texture "mystery" is also solved - alas - explained. There is > a global cache in simgear/makeEffect.cxx (effectMap), and it has no > condition to ever drop anything. So, created effects always stay in > memory until shutdown - hence also their textures. If that's used for > scenery/MP aircraft a lot, it _might_ accumulate a lot of memory. Tim > might know more about this :).
It seemed like a good idea at the time :) The Effect cache could be changed to use osg::observer_ptr, which is a weak pointer. Also, there may be some places where effects are not being found in the cache and are being recreated. Tim > > cheers, > Thorsten > > ------------------------------------------------------------------------------ > Benefiting from Server Virtualization: Beyond Initial Workload > Consolidation -- Increasing the use of server virtualization is a top > priority.Virtualization can reduce costs, simplify management, and improve > application availability and disaster protection. Learn more about boosting > the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel > ------------------------------------------------------------------------------ Benefiting from Server Virtualization: Beyond Initial Workload Consolidation -- Increasing the use of server virtualization is a top priority.Virtualization can reduce costs, simplify management, and improve application availability and disaster protection. Learn more about boosting the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
