CPU usage of data structures [was: Re: [PD] Re: new pmpd developer]

cyrille cyrille.henry at la-kitchen.fr
Wed Mar 16 12:36:46 CET 2005

hello frank,

thanks for your optimisation.
do you think more improvement can still be made?
i'm very disapointed with the curent performances...


Frank Barknecht wrote:
> Hallo,
> Frank Barknecht hat gesagt: // Frank Barknecht wrote:
>>Another test I did was in the opposite direction: I suspected, that
>>maybe access to the array data is slowing things down. So I added
>>another field to the mass-struct for color. I then colorized the
>>movable mass on the house's roof. ;)
> Okay, inspired by this I now tried some more things to optimize
> setting array data, with good results actually: CPU usage was about
> halfed (no real benchmark data).
> In attached patch I replace the many "set" patches which always just
> set one single field in an array by abstractions, which use only one
> [set] inside to set fields in one go. Those are mass-setter.pd and
> link-setter.pd. They also carry the pmpd-objects inside, which makes
> the patches clearer. 
> This turns out to be a big performance boost.
> Morale of story (so far): Use the least amount of [set] object,
> concentrate on bundling [set]. This was news to me, too, thanks for
> hitting my head at this problem. ;)
> Ciao

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