#linuxcnc-devel Logs

Jan 30 2020

12:10 AM linuxcnc-build: build #2 of 4041.deb-buster-rtpreempt-amd64 is complete: Failure [4failed shell_1] Build details are at http://buildbot.linuxcnc.org/buildbot/builders/4041.deb-buster-rtpreempt-amd64/builds/2
12:21 AM pcw_home: Looks like the RPI4 could work up to a 2 KHz servo thread with SPI, but no video, the RPI4s video is disastrous for realtime
12:25 AM linuxcnc-build: Hey! build 0000.checkin #6395 is complete: Success [3build successful]
12:25 AM linuxcnc-build: Build details are at http://buildbot.linuxcnc.org/buildbot/builders/0000.checkin/builds/6395
08:37 AM jepler: seb_kuzminsky: thanks for starting on buster for buildbot!
08:38 AM jepler: pcw_home: both sam and I are running with video enabled. do you have to fully disable it, just not start an X server, or what? No surprise it's harmful for latency, the video is shared-memory architecture.
08:38 AM jepler: (is video worse than on pi3 according to your investigation?)
08:47 AM skunkworks: I think he is talking about youtube?
08:47 AM skunkworks: That is what I found.
08:48 AM skunkworks: runs great as long as you don't do youtube. (or vlc player)
09:07 AM jepler: Oh I wouldn't do those things :)
09:09 AM skunkworks: I think he has commented that you wouldn't even try to run video on the rpi3 because it is so slow
09:53 AM pcw_home: Yes, its not normal video that seems to be an issue, I think its either the browser or video decoder.
09:57 AM skunkworks: The browser doesn't help. But at 500hz I have not had a issue
10:24 AM linuxcnc-build: build #3 of 4041.deb-buster-rtpreempt-amd64 is complete: Failure [4failed shell_3] Build details are at http://buildbot.linuxcnc.org/buildbot/builders/4041.deb-buster-rtpreempt-amd64/builds/3
10:58 AM linuxcnc-build: build #4 of 4041.deb-buster-rtpreempt-amd64 is complete: Failure [4failed shell_3] Build details are at http://buildbot.linuxcnc.org/buildbot/builders/4041.deb-buster-rtpreempt-amd64/builds/4
11:52 AM seb_kuzminsky: hm, the version of apt-ftparchive on the buildmaster is too old to understand the debs produced on buster
11:52 AM seb_kuzminsky: i guess i can't put off upgrading the buildmaster any longer
12:07 PM pcw_home: skunkworks: on SPI I get about 300 usec servo thread tmax if I don't use the browser/youtube
12:07 PM pcw_home: and about 1300 usec if i do...
04:17 PM -!- #linuxcnc-devel mode set to +v by ChanServ
06:06 PM skunkworks: It will almost run ok at 500hz with youtube..
11:04 PM fjungclaus1 is now known as fjungclaus