[mythtv-users] random livetv stalls

[Kevin Johnson]

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.




On Thu, Feb 6, 2014 at 10:33 PM, Jean-Yves Avenard <jyavenard at gmail.com>wrote:

> Hi
>
>
> On Friday, February 7, 2014, Kevin Johnson <iitywygms at gmail.com> wrote:
>>
>> Unless I am not understanding how mythtv works, my mythtv setup does not
>> use nfs.
>> This is my exports config.
>> /D2/share *(rw,async,no_root_squash,no_subtree_check)
>> No other entries are in there.
>>
>
> /etc/exports has nothing to do with what the frontend is mounting. It will
> be fstab
>
>
>
>>
>> Mythtv does not store any recordings in the /D2/share directory.
>> So that should eliminate nfs as a issue right?  Or do I not understand
>> correctly?
>>
>>>
>>>
> You do...
>
> Looking at your log, it does attempt to go via storage groups.
>
> At this stage the only thing I can suggest is try a different hard drive.
>
> In the mean time when Live TV starts, try to rewind 10s or pause 10-15s or
> so... see if that helps
>
>
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>
>
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