I see a peculiar threads/cpu usage when using ffmpeg to convert a video file (on Haiku Beta4). This is the command line:
ffmpeg -i "Test.mp4" -f avi -vcodec mpeg4 -b:v 1000k -r 30 -acodec ac3 -b:a 128k -ar 44100 -ac 2 "Test.avi"
I have an 8 core i7, 2.3 GHz machine. Pulse shows about 40% usage across all 8 cores at the start, but soon drops to maybe 10% with short 50% spikes on individual cores. In general it seems to fluctuate quite a bit (not sure if it depends on the video contents changing…)
Also curious is the thread count and their core usage (all 8 cores on at the left, 4 cores turned off on the right):
All those lazy ass threads in the middle don’t seem to work at all…
A current Linux Mint shows around 80% cpu usage acoss all cores, relatively stable. No idea about thread count, because I have no idea how to get that info on Linux.