[mythtv-users] Mythbackend hogging CPU, causing IO problems

[Ryan Steffes]

I just upgraded to recent SVN this week (and tried again with this mornings)
and mythbackend is running oddly.  It starts out fine, then, after 5 to 20
minutes, it starts hogging the CPU to the point where it causes ivtv to
flake and throw those write errors, and my log starts filling up with

2006-06-03 13:48:09.703 NVP: ClearAfterSeek(1)
2006-06-03 13:48:09.704 Transcoding Video and Audio
2006-06-03 13:48:16.901 GetNextFreeFrame() is getting a busy frame P.
UUUUUUUUUUUUUUUUUUUUUUUUUUUuUUL
2006-06-03 13:48:16.934 GetNextFreeFrame() is getting a busy frame P.
UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUL
2006-06-03 13:48:16.970 GetNextFreeFrame() is getting a busy frame P.
LUUUUUUUUUUUUUUUUUUUUUUUUUUUUUu
2006-06-03 13:48:17.000 GetNextFreeFrame() is getting a busy frame P.
LUUUUUUUUUUUUUUUUUUUUUUUUUUUUUu
2006-06-03 13:48:17.031 GetNextFreeFrame() is getting a busy frame P.
LUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
2006-06-03 13:48:17.063 GetNextFreeFrame() is getting a busy frame P.
uUULUUUUUUUUUUUUUUUUUUUUUUUUUUU
2006-06-03 13:48:17.093 GetNextFreeFrame() is getting a busy frame P.
uUULUUUUUUUUUUUUUUUUUUUUUUUUUUU
2006-06-03 13:48:17.126 GetNextFreeFrame() is getting a busy frame P.
UUULUUUUUUUUUUUUUUUUUUUUUUUUUUU

and
2006-06-03 13:58:42.989 TFW, Error: Write() -- IOBOUND begin cnt(2048)
free(2047)
2006-06-03 13:58:43.551 TFW, Error: Write() -- IOBOUND end
2006-06-03 13:58:43.896 TFW, Error: Write() -- IOBOUND begin cnt(2048)
free(2047)
2006-06-03 13:58:44.523 TFW, Error: Write() -- IOBOUND end
2006-06-03 13:58:45.327 TFW, Error: Write() -- IOBOUND begin cnt(2048)
free(2047)


I'm running with -v general,record,playback,schedule,commflag,jobqueue and
nothing more descriptive is coming up in the logs.

I am only running with one PVR150, no HD, no reason to be having IO
problems.  I wasn't having them with 0.18, or the version of SVN I had a
before I updated.  I'd roll back to that version, but I don't know what
version it was.

Any suggestions?

Ryan
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