-
Log&Transfer using 20% of CPU
Hi,
Yet another one of these obscure, hitting-a-wall sort of problems. Transferring footage is 1/5th real time – 5.5 minutes for a 1-minute clip.
Here are all the details:
AVCHD from AF100, PH1080 quality (~3MB/s) 1080p24
Macbook Pro 2009, i5 dual 2.4GHz 4GB RAM, OSX 10.6.6, FCP 7.0.3
on AC power, set to ‘high performance’
Source drive USB, 95% empty, tested over 30MB/s
Target drive FW800, 95% empty, tested over 67MB/s
Disabled spotlight on both drivesDuring transfer, disk activity is always under 5MB/s and CPU is 35-45% (each thread is 10-20%). There’s plenty of free RAM, and nothing else takes more than a few % of CPU.
So what’s keeping it down?
How fast should it be?Thanks!
-
2 Replies
-
[Drew Lahat] “So what’s keeping it down?”
Transcoding to ProRes…with a laptop. Might be the USB connection too? But that should be fast enough.
[Drew Lahat] “How fast should it be?”
Well, on my 3.0Ghz tower, that conversion is about real time. Laptop…it is 50% slower. 1:30 for a 1:00 clip.
Shane
GETTING ORGANIZED WITH FINAL CUT PRO DVD…don’t miss it.
Read my blog, Little Frog in High Def -
[Shane Ross] “Might be the USB connection too? But that should be fast enough.”
Nope, I got the throughput results using the same cable & USB connection in the same session.
Anyone? Faulty logic board? I haven’t noticed other problems.
Reply to this Discussion! Login or Sign Up