Re: Suggestions for improving ffmpeg performance?
On Tue, Mar 04, 2008 at 08:52:02AM -0600, Kevin Monceaux wrote:
> installed from Debian-Multimedia.org. Now, running Debian(Lenny), if I
> start a video transfer from my PC to my TiVo I have to wait for quite a
> while before I try to start watching it. Sometimes the transfer dies in
> mid-transfer. Watching my network switch I see intermittent activity
> between my desktop PC and my TiVo with two to three second pauses
> in between. ldd shows ffmpeg is using the i686 libc6 libraries. I tried
> rebuilding the ffmpeg package from source optimizing it for i686, but that
> didn't help. Does anyone have any suggestions I might try to improve
> performance?
>
What happens if you run top? Look at things like %idle, %waiting (for
i.o), and %sys (kernel executing) and %user (your program, likely the
ffmpeg program, see the listing for that line). This may tell you where
the bottle-neck is. For example, did the two systems uses the same
mount options for the filesystem? Are other daemons running that are
interrupting the process?
Doug.
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