Re: mpv and estd and --vo=xv

[Mike Pumford <mpumford%mudcovered.org.uk@localhost>]

On 11/07/2021 14:13, Rhialto wrote:
> I keep having weird things with graphics performance. I got myself a new
> box ("Intel(R) Core(TM) i5-9600K CPU @ 3.70GHz") with 6 cores. I got a
> "new" old Radeon HD-5450 because at least that chipset is supported for
> dri/drm.
>
> I also use estd to dymamically throttle down the cpu freqency when the
> system is not so busy. So most of the time it is set to 800 MHz, the
> lowest possible value.
I'm not sure estd defaults work if you have a lot of cores. From reading 
the manual page (and based on experiments here) it seems to work based 
on overall cpu time so you have to adjust the parameters so that 1 core 
at 100% CPU is enough to keep it from dropping the clock speed. So for 
my 8 core i7 system I use:

estd_flags="-a -l 12 -h 25"

in rc.conf. So it needs a brief burst of 2 core load to get things to 
ramp up but then it won't ramp down as long as 1 core is maxed out. This 
seems to be match the reality when doing builds. Even when the a build 
goes single core as long as that core stays at 100% the core clock stays 
at maximum. This did seem to help with in browser video playback 
smoothness as well but I'm on the onboard graphics of my CPU rather than 
an external card.

Mike