[mythtv-users] mythbackend periodically locks up at 100% CPU since upgrading to latest 0.27.4 fixes

[Paul Netherwood]

> 
> I think this problem has something to do with multirec. I have 5 cards, 4 DVB-T cards each with multirec set to 2 and a DVB-S2 card with multirec set to 5. I had no problem with this configuration until I upgraded to 0.27.4. The time locked out was reduced when I reduced the multirec on the DVB-S2 card from 5 to 2. Once I removed all of the multirec and set every card to 1 the problem does not occur. This effectively reduces the number of encoders from 13 to 5.
> 
> I wouldn't say the problem is resolved but reduced. I noticed some changes to the code to do with multirec in scheduler.cpp. 
> 

I've just had the locking up occur even with multirec set to 1 for all cards. So rather then being related to multirec itself it may be just the fact of reducing the number of encoders from 13 to 5 reduces the number of scheduling threads and hence the chance of a the backend hanging. Its just locked up just now while I was making some changes to scheduled programs while a recording was going on. I'm becoming more convinced its a locking bug in the scheduler.

Has anyone else had any similar issues?