Mailing List Archive: MythTV: Users

My backend goes out to lunch in mythtv.25

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rbonafied at gmail

Sep 17, 2012, 6:30 PM

Post #1 of 5 (451 views)
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My backend goes out to lunch in mythtv.25

Hi,

I finally got off my butt and decided to post this before opening a
ticket. I've been running .25 for about 4 months. Since upgrading,
I've noticed the backend stops responding to the frontend rather
frequently. By frequently, I would have said 1 to 2 days. So much so
that I've set up a cron to restart the backend nightly. Now, with the
increased amount of shows kicking in, the backend checks out sooner.

By check out, I mean the backend stops responding to the frontend and
mythweb hangs when trying to hit the status page. (Picture that little
loading timer circle never coming back) From what I can tell, shows are
still getting recorded so that's good. Unfortunately, if we can't watch
the shows without restarting the backend it won't be very wife friendly.
There are also log entries in the backend log so it's doing something.

On another note, I've also noticed the frontend will randomly just exit
from within a show. This appears after 5-6 days or so and doesn't seem
to have a predictable pattern before it happens.

Here is some of the particulars:
Host: mageia 1 32 bit
Myth is self compiled. Not installed from the official repository.
kernel = 2.6.38.8-server-10.mga (4 G of memory in server)

Version info:

mythbackend --version
Please attach all output as a file in bug reports.
MythTV Version : v0.25.1-54-g67522d8
MythTV Branch : fixes/0.25
Network Protocol : 72
Library API : 0.25.20120506-1
QT Version : 4.7.4
Options compiled in:
linux profile use_hidesyms using_alsa using_jack using_oss using_pulse
using_pulseoutput using_backend using_bindings_python using_bindings_php
using_dvb using_firewire using_frontend using_hdhomerun using_ceton
using_hdpvr using_iptv using_ivtv using_joystick_menu using_libcrypto
using_libxml2 using_lirc using_mheg using_opengl_video using_qtwebkit
using_qtscript using_qtdbus using_v4l2 using_x11 using_bindings_python
using_bindings_php using_mythtranscode using_opengl using_vaapi
using_vdpau using_ffmpeg_threads using_live using_mheg using_libass
using_libxml2
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esarfl at gmail

Sep 17, 2012, 8:45 PM

Post #2 of 5 (425 views)
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Re: My backend goes out to lunch in mythtv.25 [In reply to]

On Sep 17, 2012 7:30 PM, "Rick" <rbonafied [at] gmail> wrote:
>
> Hi,
>
> I finally got off my butt and decided to post this before opening a
> ticket. I've been running .25 for about 4 months. Since upgrading,
> I've noticed the backend stops responding to the frontend rather
> frequently.
>
> Version info:
>
> mythbackend --version
> Please attach all output as a file in bug reports.
> MythTV Version : v0.25.1-54-g67522d8
> MythTV Branch : fixes/0.25

There have been a few deadlock fixes since that version. Try updating.

Tom

support at drdos

Sep 18, 2012, 2:16 AM

Post #3 of 5 (420 views)
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Re: My backend goes out to lunch in mythtv.25 [In reply to]

Rick wrote:
> Myth is self compiled. Not installed from the official repository.

Here is where your install and mine differ. I'm compiling from git and
don't see this issue. As Tom suggests, you may want to update.

My backend and frontend run:

Mageia 1 (32bit)
kernel-server-2.6.38.7-1.mga-1-1.mga1

mythbackend --version
Please attach all output as a file in bug reports.
MythTV Version : v0.25.2-19-gcf06841
MythTV Branch : fixes/0.25
Network Protocol : 72
Library API : 0.25.20120506-1
QT Version : 4.7.4

Doug

--
Ben Franklin quote:

"Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety."

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rbonafied at gmail

Sep 18, 2012, 5:32 PM

Post #4 of 5 (402 views)
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Re: My backend goes out to lunch in mythtv.25 [In reply to]

On 09/18/2012 05:16 AM, Doug Lytle wrote:
> Rick wrote:
>> Myth is self compiled. Not installed from the official repository.
>
> Here is where your install and mine differ. I'm compiling from git and
> don't see this issue. As Tom suggests, you may want to update.
>
> My backend and frontend run:
>
> Mageia 1 (32bit)
> kernel-server-2.6.38.7-1.mga-1-1.mga1
>
> mythbackend --version
> Please attach all output as a file in bug reports.
> MythTV Version : v0.25.2-19-gcf06841
> MythTV Branch : fixes/0.25
> Network Protocol : 72
> Library API : 0.25.20120506-1
> QT Version : 4.7.4
>
>
> Doug
>
>
I'll update and try again. By the way, I'm compiling from git too.
Thanks for the suggestion.
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ylee at pobox

Sep 19, 2012, 8:04 PM

Post #5 of 5 (391 views)
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Re: My backend goes out to lunch in mythtv.25 [In reply to]

Rick <rbonafied [at] gmail> says:
> I've been running .25 for about 4 months. Since upgrading, I've
> noticed the backend stops responding to the frontend rather
> frequently. By frequently, I would have said 1 to 2 days.

In addition to Tom Hayward's advice, try starting mythbackend with the
--noupnp flag. If you have /etc/sysconfig/mythbackend, for example,
add

OPTIONS="--noupnp"

to it.

I think the flag will prevent using HLS (the MythTV-on-Android stuff
discussed a lot on the list lately), but will make the
frontend-backend connection more reliable in my experience. It will
also stop the constant

HttpServer126 servicehost.cpp:134 (Invoke) - MethodInfo::Invoke - An
Exception Occurred: Not Authorized
HttpServer127 servicehost.cpp:405 (ProcessRequest) - Not Authorized

in the mythbackend log. (What causes that, anyway? I think it started
after I tried out the JWPlayer embedded in mythbackend's internal
Webserver.)
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