[mythtv-users] waiting for a thread/backend hang

[Sean Savage]

On Tue, 09 Nov 2004 18:13:41 -0500, Christopher N. Deckard
<cnd at ecn.purdue.edu> wrote:
> I'm trying to get MythTV stable on some Athlon64 hardware under Debian
> "unstable" (quoted as I'm using the unreleased pure64 tree from
> alioth.debian.org).  I've also rebuilt the MythTV Debian source packages
> for amd64.  MythTV runs fine, and I can schedule things and it will
> record the programs as expected.  However, there seems to be some kind
> of weirdness going on, and I haven't been able to pinpoint it.
> 
> I am getting a lot (on the order of 20/second) of messages in my mythtv
> backend log stating "waiting for a thread".  The time I really notice
> this is when a program has started to record, and I use the MythWeb
> interface for verifying that it has started to record.  The MythWeb
> pages take a very long time (sometimes a minute) to come up.  Bandwidth
> is not the issue as this is on my home network, and the backend,
> storage, and apache server are all running on the same machine.
> 
> The other thing I notice is that many times the preview image of the
> recorded program does not show up.  If I restart mythbackend, everything
> comes back and is responsive, but making the preview images still seems
> to either take forever or is broken.
> 
> When the backend gets into its "waiting for a thread" mode, scheduled to
> record programs do not get recorded.
> 
> Any pointers on fixing this or investigating this problem would be
> great.  I haven't seen anyone else mention this on the mailing list, and
> there are very few results in a google search.  Could this be an
> Athlon64 problem?
> 
> -Chris
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> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> 

This problem is still happening to me.  I have the latest rpms from
atrpms as of 2 days ago on fc2.  I have a pvr-250 and old bt878 wintv.
 i really havent been able to determine what is causing it, the only
things before in the log are ...

2004-12-16 02:40:25 MainServer::HandleAnnounce Playback
2004-12-16 02:40:25 adding: linux as a client (events: 0)
2004-12-16 02:41:52 MainServer::HandleAnnounce Playback
2004-12-16 02:41:52 adding: linux as a client (events: 0)
2004-12-16 02:41:53 waiting for a thread..
2004-12-16 02:41:53 waiting for a thread..
2004-12-16 02:41:53 waiting for a thread..

i was probably poking around mythweb(resorded programs) at that time,
i dont know if mythweb could cause it, i dont see any errors in
apache, except for a pass by refrence warning in program_listings.php

PHP Warning:  Call-time pass-by-reference has been deprecated -
argument passed by value;  If you would like to pass it by reference,
modify the declaration of [runtime function name]().  If you would
like to enable call-time pass-by-reference, you can set
allow_call_time_pass_reference to true in your INI file.  However,
future versions may not support this any longer.  in
/var/www/html/mythweb/program_listing.php on line 50