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[08:49:00] | dekarl: | IMHO the only good thing about HEVC is the promotion they do for the Alliance for Open Media. https://en.wikipedia.org/wiki/High_Efficiency . . . nt_licensing |
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[15:18:28] | lautriv_: | would be worth to implement some kind of heardbeat into backends, still enough problems in silent crashes. |
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[15:31:11] | crakrjak: | anyone around? |
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[15:33:02] | stuartm: | lautriv_: so the problem is backends crashing – slaves or the master? |
[15:34:36] | stuartm: | Could you explain how a heartbeat would help? We already know when backends go down since their permanent socket connection to the master, or master to the frontend will be closed when that happens |
[15:36:35] | stuartm: | and we can even tell the difference between a normal shutdown and a crash with a 'backend_shutdown' event – if it wasn't sent the the backend crashed or was aborted |
[15:37:01] | lautriv_: | stuartm, in the past few years i observed random crashes, 0.28 stabilized a lot but it claims the dvb-stream to close e.g. when i get something from dish which will truncate because of massive rain or a thunderstorm the backend runs on a wall. if there were any testable sign of live like a timestamp in a tempfile it would be easy to restart. |
[15:37:18] | stuartm: | but how we you utilise that information? Send an email notification? |
[15:38:03] | stuartm: | are you talking about crashes or hangs? |
[15:38:26] | stuartm: | a crash is easily detected, restart scripts are out there to auto-restart a crashed backend |
[15:38:48] | lautriv_: | process is up but doesn't react. |
[15:38:57] | stuartm: | that's a hang, not a crash :) |
[15:39:09] | stuartm: | a heartbeat would help to determine that a backend is hung, yes |
[15:39:19] | lautriv_: | something trivial like date > somefile inside the scheduling would help to check health |
[15:40:45] | lautriv_: | since a kill -9 leads to a zombie, that is more than just hanging ;) |
[15:43:00] | lautriv_: | i admit this could also be issued by the cards (firmware) itself where mythbackend claiming a dead device. |
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