2013/2/15, Christoph Lohmann <2...@r-36.net>: > Please try to see how much the CPU usage changed with the defaults in > the repository. I can’t really apply 5 fps; this makes output feel like > the terminal is hanging.
I try measure on hd6770 with open source driver - it have problem with 2d acceleration (after jump to KMS), but it make difference more clear (I suppose arm hardware have mostly same performance). First, with xfps=60 it have somting like overflow: it freeze st output to 100-300 ms each 2-3 sec (on active updating). Second, I measure CPU usage on real task - search in mc: default xfps=60 actionfps=30 mc 68.5% X 26% st 3.4% xfps=30 actionfps=15 mc 76.9% X 15,7% st 4% xfps=30 actionfps=10 mc 80.9% X 11,8% st 4,2% xfps=30 actionfps=5 mc 84,8% X 7,5% st 4,2% Some comment on result: mc - better when it bigger (as it main task), X and st - better lower. I have 3-core cpu. With single core cpu result will by match worse as X and st cpu usage detain main task (mc). I agree, that 5fps should not be by default. But I don't see difference when xfps > 30. Maybe xfps=30 actionfps=15 good enough as default? In any case, as you move it config.h any one can set it as wish.
