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| 23-05-08 / 01:18 : Logic 8.0.2 update : unresolved audio usage peaks (cjed) |
| Apple released a 8.0.2 update to Logic Pro 8. The listed changes are numerous, but there still isn't any mention of the resolution of the huge bug that this giant thread at Apple forums. in fact Logic 8 is said to experience harsh CPU usage peaks (viewable through the audio usage meter) without any reason (and randomly) when using third party AU. The problem doesn't seem to affect Logic pro 7. So probably there are communication problems between Logic (Apple/Emagic) team and Apple CoreAudio team. The resulting bugs remind a lot what we experience with EastWest PLAY player (also the case in standalone mode for PLAY). To conclude we learn that pro musicians/producers consider Logic (Pro) as a non pro product (even the Logic creator at Emagic would have said it wasn't intended to from what we read in the thread), and so they are looking forward ProTools as a reliable solution, despite its less friendly interface. A temporary solution to reduce CPU usage peaks in Logic 8 is to allocate it the max process priority (sudo renice -20 [Logic pid] command, or use the freeware Nicer). However it only limits the frequency of the problem. First comments about the update are mixed bag. It appears that the Safety I/O Buffer (secondary buffer that is used when the audio engine cannot ensure the minimum latency defined by the main buffer) now leads to more overloads (where it is aimed at avoiding or at least reducing them). |
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