On Sat, 2014-10-04 at 13:34 -0700, Ronni Montoya wrote: > Hi, i have a very big patch that is producing glitches at 70% cpu load. > Is this normal behaivor? With my old computer i only used to get > glitches when i go over 100 % cpu load .....any idea why its producing > 70% cpus load? > The patch has a lot subpatches and a lot of big tables with data (like > 100 tables) ... is this a bad practice in pd? having a lot of > subpatches, gui elements and tables can affect the sound? > Do you think that it would be better if i put all in just one patch ( > withouth too much subpatches?), and delete gui elements ? maybe are > the tables? > What do you recommend me? >
CPU load in and glitches might correlate, but they do not so necessarily. CPU might not be the only bottle neck, there is also I/O and memory access. Even if the CPU is the culprit, there are scenarios where you experience glitches with a CPU load of 70%. What does CPU load in percent mean? It means that in a certain time frame x percent of CPU cycles have been used and 100-x percent have been idling. Assume your latency setting in Pd is much shorter than the time frame used for measuring CPU load. If you require Pd to do n calculations within m ms, this might cause an audio drop-out because the CPU is too slow, but it might still show a load of only 70% in your CPU monitoring tool, because the remaining time of the measuring window the CPU was not doing much. You can easily trigger this by something like [bang( | [100000( <- adjust that value at your will | [until] | [1.23489435( | [pow] Depending on your CPU and latency setting, you may want to alter the number in the message box in order to reliably, but only quickly cause a glitch. What you could do (combine at your will): a) make your patch less demanding at times. For instance, do not too many things in zero logical time. b) increase your latency setting c) get a faster CPU Roman _______________________________________________ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list