[mythtv-users] random livetv stalls

Kevin Johnson iitywygms at gmail.com
Sat Feb 8 22:47:20 UTC 2014


On Fri, Feb 7, 2014 at 7:42 AM, Kevin Johnson <iitywygms at gmail.com> wrote:

> Well that's a bummer.  I have been on myth since .20 and never had live tv
> issues like others have reported.  Guess it is my turn.
> I already have 3 drives that have recording directories spread across them
> so I do not think changing drives will do anything.  The logs have reported
> issues on all 3 drives.
>
> After searching around a bit I have tried making some tweaks to
> systcl.conf
> kernel.shmall = 167772160
> kernel.shmmax = 167772160
> net.core.wmem_max=12582912
> net.core.rmem_max=12582912
> net.ipv4.tcp_rmem= 10240 87380 12582912
> net.ipv4.tcp_wmem= 10240 87380 12582912
>
> I will see if this makes a difference.
>
> Strange thing is I can be recording 3 shows at once and never see issues
> with lost recordings.  So I don't believe it is a hard drive issue,
> although I do not know enough about the way everything works to know if my
> assumptions are correct.
>
> I also tried changing the kernel i0 scheduler from deadline to noop.  That
> offered no improvement.
>
> I do see this error around the time things start to go flaky.
> E HDHRStreamHandler recorders/hdhrstreamhandler.cpp:206 (UpdateFilters)
> HDHRSH(131968AB-2): UpdateFilters called in wrong tune mode
>
> I wonder if the hdhr prime has something to do with it??
>
> I was hoping that this could get this resolved as I am off on business
> soon and the house sitter will have to deal with the locking issue.
>
> Anyway, thank you for the suggestions.  The search continues.
>
>
>
Well it seems the above may have fixed the issue.  I have not had a lock
since doing the above.  And I no longer see the error in the frontend log.
I still get a stall of about 4 seconds at the top and bottom of the hour
during live tv watching, but that is it.
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