id summary reporter owner description type status priority milestone component version resolution keywords cc blockedby blocking platform 18216 ffmpeg shows little usage of a large number of threads humdinger nobody "Please refer to the forum thread [https://discuss.haiku-os.org/t/ffmpegs-threads-cpu-usage ffmpeg's threads/cpu usage]. While ffmpeg under Linux shows a similarly large number of threads, it has a combined cpu usage of around 70%, while Haiku is at a max of 50%. Overall speed reported by ffmpeg for a test encoding is around 13x under Linux, 9.5x under Haiku. As waddlesplash said: > This looks like a job for scheduling_recorder and DebugAnalyzer to determine where the bottlenecks are, if it doesn't appear I/O is the problem. Probably worth opening a ticket, as this looks like something that could be ""low-hanging fruit"" performance-wise." enhancement new normal Unscheduled System/Kernel R1/beta4 All