[Kstars-devel] KDE/kdeedu/kstars/kstars

[Khudyakov Alexey]

В сообщении от 07 ноября 2009 00:13:21 Alexey Khudyakov написал:
> SVN commit 1045844 by khudyakov:
> 
> Remove radian caching from dms. It's not really sensible to
> cache results of multiplication. It's better to save some space
> 
Follow up on DMS caching 

Here nice plot showing caching efficiency as function of time. Efficiency is 
defined as ratio of all cache hits to all cache misses so far. I made two 
measurements. In 'idle' I simply left KStars running for few minutes. In 
'active' I dragged sky around, zoomed in/out.

Ratio is quite low, it's in 0.5-0.6 range. Or in other words only about 1 call 
in 3 is cached. This leads me to question efficiency of sin/cos caching.

In attachment plot and patch used for measurements
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