Hello, Martin. Before running mpv to watch the video I _completely_ disabled all the software from packages from loading in /etc/rc.conf.local to exclude them totally from testing loop. I do it on i7 2-core CPU machine.
For now from boot runs only: 1. syslogd, pflogd, nsd, unbound, ntpd, mountd, nfsd 2. sshd, dhcpd, smtpd, ftpd, ftpproxy, vmd, spamd, spmalogd, sndiod 3. apmd, sensorsd, cron, xenodm According to top -SH -s .3 some software loaded in addition: spectrwm, xterm, iostat, slaacd, getty (some instances) Stutters present with just the software loaded listed above. When I run mpv and try to watch 720p video. In case of stutters after some time of watching audio flow desyncronized with video flow and mpv show video FPS/2 rate afterwards. Each time of stutter mpv increase 'Dropped' like A-V: 0.000 Dropped: 58++ Cahce: 1378s+154MB I did ktrace for mpv process. I run and see by 'kdump -H ktrace.out' that it has one process ID and / mostly one-three thread used. But sometimes (assuming in stutter times) it jumping against treads with different numbers. Yes, IPI increased to 900-1000 when stutter appears. I'm going to disable step-by step each 'out of the box' software to determine the reason. Am I right doing this way? Martin ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Friday, April 3, 2020 8:13 AM, Martin Pieuchot <[email protected]> wrote: > On 02/04/20(Thu) 18:40, Martin wrote: > > > Before starting the video 2017 bsdcon, disabled all the packages software > > on both AMD and i7 and run mpv player and test both machines. > > What do you mean? Which software are running? What do you see in > "top -SH -s .3"? > > > Shutters on both platforms happened when APM change low CPU frequency to > > high. Maybe it's an apmd issue? > > No it is not, it is just a symptom. > > Please let's stick to the original question: which piece of software are > you running when you see the stutters. Is it mpv(1)? > > When running mpv(1) do you see high IPIs? If so did you ktrace(1) it?
