Hi Kevin,
I didn't have a really good comment so didn't speculate in my last
email... I have been using dual core or dual CPU setups for quite
a few
years on Linux though. I've seen a similar problem a few years back,
and think at the time it was an issue with the process reporting tools
on the linux side, rather than Cin. But I won't guarantee your
problem
isn't a compile issue (but it might not be Cin, it can be toolchain
side
on FC6 also.)
cpu usage statistics on multi-core cpus can sometimes be incorrect, so
I've never worried about it to much. Usually I do a baseline against
the closest single core cpu I have around and see how the performance
compares. I've never seen a 2:1 performance improvement when going
from
1 to 2 cpus (and didn't expect one, since there is overhead) but if
there is not 1.2 to 1.5 times the performace then I start to worry. I
usually do some simple renders that take a few minutes to run and
compare the render times across platforms.
Kevin,
Thanks for the thoughts. I've put in a good eight hours of editing
on the new box so far. I have a fairly simple, short project with
about three audio tracks and two video tracks, chroma key, titling
and a few hundred keyframes. I've been using mpstat to examine the
cpu usage of each individual CPU. I describe using this command and
the ffmpeg -threads option in this post:
http://crazedmuleproductions.blogspot.com/2007/10/multithreading-in-
ffmpeg-and-mpstat.html
I'm very happy to report than Cinelerra has not crashed once since
I've compiled and have been using it. My OS is FC6, x86-64. Of
course, as this is a server, it is picky about its video, and I was
not able to get my NVidia card working. Thus, do not have OpenGL
compiled/enabled. I'm getting more comfortable using the box and
will give a full report once I am done with this project. So far,
the project is looking damn good, if I say so myself!
;)
scott
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