[FFmpeg-user] Help with excessive CPU usage

[Francois Visagie]

> -----Original Message-----
> From: ffmpeg-user-bounces at ffmpeg.org [mailto:ffmpeg-user-
> bounces at ffmpeg.org] On Behalf Of Loadlinx
> Sent: 19 February 2014 08:38
> To: FFmpeg user questions
> Subject: Re: [FFmpeg-user] Help with excessive CPU usage
> 
> Any ideas what could be wrong here? I cant figure out why an identical
> server has this problem with ffmpeg making all processes run at 250%
usage.
> Anyone?
> 
> 
> On Sat, Feb 15, 2014 at 2:14 AM, Loadlinx <limiteddi at gmail.com> wrote:
> 
> > I think I know what causes it but would like someone to confirm:
> >
> > I have two identical 16 core servers, identical ffmpeg lines,
> > identical software installs.
> >
> > Server 1 does a very good job transcoding 20 inputs from DVB @ 75% per
> > process
> >
> > Server 2 is on the same LAN and transcodes inputs from server 1 but
> > CPU usage is through the roof. If I start with 1 process is starts at
> > 75%, if I add 4 more all processes go up to 180%.
> >
> > The only difference between the two is input: DVB to http on localhost
> > vs http remote host.
> >
> > Can someone shed some light if its possible to get server 2 to work as
> > efficiently as server 1?

You could copy the same files to server 2 and transcode them locally for
comparison (and possible temporary work-around if that's where the problem
lies).

As a side issue, how is it possible to get > 100% CPU usage?