[mythtv-users] mythlogserver multiple copies high cpu

[Andrei Rjeousski]

On Sat, Mar 2, 2013 at 1:43 AM, David Farmer <remrafevad at gmail.com> wrote:

>  I have been having this as an ongoing problem since I installed MythTV
> 0.26 on an Arch Linux x86_64 box. There is a current bug report<http://code.mythtv.org/trac/ticket/11230>(ticket #11230) but it's priority is marked at low, I'm hoping that this
> could possibly change! Trouble is, I don't know how to reproduce it. As the
> subject says, I get multiple copies of mythlogserver and they smash the cpu
> at a combined total of almost 100% for each core.
>
> My typical MythTV usage is to have it wake itself, record a program and
> then use a HandBrakeCLI user job to transcode this, and finally shut itself
> down. Typically a 2 hour SD recording takes 2 hours to transcode using my
> settings, and a 2 hour HD takes about 6 hours. But since 0.26 I get up in
> the morning and the the user jobs aren't finished and there are around 4
> copies of mythlogserver all running, using so much cpu that HandBrakeCLI
> only used 0.3%. But the worst example was a few days ago, I had 14
> instances all at the same time.
>

What kind of video card do you have? I know it may sound irrelevant, but
I've had the same issue and spend a night trying to find out what was going
on. On my system the issue was actually caused by a bad nvidia driver (310
or 313 i believe). The process would stall with the following call stack:

(gdb) where
#0 0x00007fd12211fd15 in _nv012tls () from /usr/lib64/libnvidia-tls.so.
313.18
#1 0x00007fd12880ab58 in ?? () from /usr/lib64/libGL.so.1
#2 0x00007fd1287e5fda in ?? () from /usr/lib64/libGL.so.1
#3 0x00007fd1303faa63 in ?? () from /lib64/ld-linux-x86-64.so.2
#4 0x00007fd125b8cee9 in ?? () from /lib64/libc.so.6
#5 0x00007fd125b8cf35 in exit () from /lib64/libc.so.6
#6 0x00007fd125b774c4 in __libc_start_main () from /lib64/libc.so.6
#7 0x0000000000401ea9 in _start ()

Since then I've downgraded to "304.64" driver and have not has any issues
since then (4 days so far). Prior to downgrading the drive, I would get
10-15 instances of mythlogserver whenever the server was busy.

If you are running nvidia, give it a try.


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