This is using the BDB backend. On Mon, Dec 22, 2008 at 6:13 AM, Ian Eslick <esl...@media.mit.edu> wrote:
> Which backend are you using? > > Sent from my iPhone > > On Dec 22, 2008, at 12:35 AM, "Elliott Slaughter" < > elliottslaugh...@gmail.com > > wrote: > > > Hi, > > > > I am exploring Elephant/BDB as a backend for a video game I am > > writing. I have ignored performance considerations so far, but on > > some larger maps (around 100 objects), performance is abominably > > slow (around 5 fps). The same maps run about 10 times faster (about > > 50 fps) when using completely in-memory hash-tables. > > > > Based on profiling, it appears that the main bottleneck is > > persistent slot lookup. I remember reading that Elephant reads from > > file on every slot read, which could explain this result. > > > > Are cached slots usable yet (at least in a single-threaded > > situation)? When I use ":cached t" in my slot definitions, I get > > errors. > > > > Any other advice about optimization would be appreciated. > > > > Thanks. > > > > -- > > Elliott Slaughter > > > > "Any road followed precisely to its end leads precisely nowhere." - > > Frank Herbert > > _______________________________________________ > > elephant-devel site list > > elephant-devel@common-lisp.net > > http://common-lisp.net/mailman/listinfo/elephant-devel > > _______________________________________________ > elephant-devel site list > elephant-devel@common-lisp.net > http://common-lisp.net/mailman/listinfo/elephant-devel > -- Elliott Slaughter "Any road followed precisely to its end leads precisely nowhere." - Frank Herbert
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