[elephant-devel] Optimization

[Ian Eslick]

Which backend are you using?

Sent from my iPhone

On Dec 22, 2008, at 12:35 AM, "Elliott Slaughter" <elliottslaughter at 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
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