Hi Markus, list,
On 29/03/15 16:08, mr. markuese wrote:
what is the best way to measure needed cpu cycles or MIPS of complex PD-objects like convolve~ oder earplug~? Surely its possible to calculate this from the source code too - for every hint I’ll be glad.
You can't determine CPU cycles without measuring in the real world - lots of issues out of the control of the source code and compiler might affect timing (eg: cache stalls due to OS-controlled switching between cores on a multiprocessor system).
Pd has a load meter patch accessible from the menu, but that measures all of Pd, rahter than specific objects.
I knocked together the attached external, rough usage guide:
[unmeausred]
| | \
[cputime~] |
| | |
| [measured] [???]]
| | | /
[cputime~] | /
| | | /
| [unmeasured]
|
|
CPU time taken by [measured]
(in ms, semi-arbitrary maximum 1 minute per block)
[???] might be included in the time, maybe not (depends on the weather)
- you really need to read and understand the order of execution section
of the html manual to make use of this [cputime~] properly.
See the help patch for a more in-depth example measuring multiple things.
Consider it under the same license as Pd.