[mythtv-users] Mythcommflag and multi-core cpu setups

Robert McNamara robert.mcnamara at gmail.com
Sat Jan 22 04:07:25 UTC 2011


On Fri, Jan 21, 2011 at 8:05 PM, Derek & Cindi Cass
<cass at casscoenterprises.com> wrote:
> I see in mythcommflag that --hogcpu will cause the flagger to use as
> much of 1 cpu as it can.  I have a quad-core cpu (AMD @ 3GHz), but I can
> still only get ~33fps for 1080i content, and I like to flag sports
> events real-time so that I can start watching them about 1 hour after
> they start.  Is there any way to get mythcommflag to use more than 1
> cpu?  I only have 1 hdpvr on this system, so I would only be running 1
> commflag at a time anyway.  I already have the JobQueueCPU setting at 2.

No.  We are limited by the decoding capabilities of libavcodec, which
is predominantly (but not completely) single-threaded.  When ffmpeg
evolves more comprehensive multithreaded decode and encode support, so
too can/will we.

Robert


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