Hard Drive – Processors – Video Card Bottleneck?

[David Roth weiss]

[Tim Stachelski] “At this time we tried using multiple streams of uncompressed 10 bit video to determine how many streams our system can run.”

10-bit SD or 10-bit HD? There is a difference of course.

[Tim Stachelski] “Our Disk throughput is comming in at about 480 MB/sec”

That’s very good, and I can understand why you’re concerned about a bottleneck somewhere. How are you determining throughput? Do you have an I/O card such as a BM or Kona?

David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los Angeles

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A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.

[Tim Stachelski]

We used compressor and selected the Quicktime uncompressed 10bit 4,2,2. The original file was from our EX1 1920 X 1080p 24 so it is HD

We are using Activity monitor to check our throughput. Because we use the EX1 and have a tapeless workflow we have not invested in a Kona card.

Thank you for the help
Tim

[David Roth weiss]

[Tim Stachelski] “We are using Activity monitor to check our throughput. Because we use the EX1 and have a tapeless workflow we have not invested in a Kona card.”

The reason I asked is because the Activity monitor is not at all accurate in terms of measuring raid throughput. It gives a measure that can best be considered as “potential.” The Disk Speed Test in the AJA System Test gives a realistic measure of the raids true performance when under load reading and writing video files. Unfortunately, it only works when one of their cards is installed.

Were I you, I would the raid manufacturer and ask them how they properly measure throughput.

David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los Angeles

POST-PRODUCTION WITHOUT THE USUAL INSANITY ™

A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.