[Bf-committers] Blender Startup Time

[Ton Roosendaal]

Hi,

On my slow PPC system, debug build, the full 'cold' startup takes  
about 5 seconds, of which 3.5 is being spent in BPY_python_start()

On second and successive runs it's 1.2s for Python. Without netrender  
only saves 0.1 sec... total about 2.5 seconds.

Interesting is that then quite some time goes to:
(0.53s) reading startup.blend + open window
(0.25s) read the preview.blend
(0.12s) gpu_init
(0.10s) font init

Slow .blend reading here might be because of endian/32 bits converting.
tested this, and indeed, saving startup myself saves 0.2 sec!

-Ton-

------------------------------------------------------------------------
Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The Netherlands

On 25 Feb, 2011, at 14:00, Campbell Barton wrote:

> Today I took some time to look at how much slower blender 2.5x is then
> 2.4x, and possible ways to make it faster.
>
> http://wiki.blender.org/index.php?title=User:Ideasman42/BlenderStartup
>
> Or just jump to conclusions
> http://wiki.blender.org/index.php?title=User:Ideasman42/BlenderStartup#Conclusions
>
> One thing I found was disk speed on a 'cold start' to be the major  
> bottleneck,
> Does anyone know some way we could asynchronously cache certain files
> on load so when they are needed it wont lag so much?
>
> Other suggestions for improving startup time welcome!
>
> -- 
> - Campbell
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