Mogens Kjaer wrote:
Skunk Worx wrote:
Hi,
I use FC6 to master DVDs and have noticed if I add the -J option to
the mkisofs command the read performance on the final dvd is severely
degraded.
For example mastering a DVD image with RockRidge and ISO9660 alone
yields about 200 mb./minute read performance on my media.
What does the DVD contain? How many files:
cd /thedvd
find . -type f | wc
I added the "-l" option to wc :
test 1 : 153163 files (1.2 gb. data)
test 2 : 10 files (3.2 gb. data)
I wanted to use a mix of media and file counts for testing.
The read performance is consistently good on my home machines (mac
mini/OSX tiger) and my FC6 boxes.
I tested four blades at work yesterday (all same vendor/model) and they
all drop to 30%, sometimes 20%, read performance with Joliet enabled.
Will start digging into the f/w updates for the blade mobos and dvd
readers tomorrow. It gets a little weird because we are testing a known
buggy 3rd party kernel driver and pci card in them.
I don't want to talk the the vendor until I eliminate those from the
equation.
---
John
