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Frame Dropping
Dual 2.5, 8gig ram, 10.3.9, XSan 1.1, XRaid 2.9tb,FCP 4.5
When trying to capture SDI/AV we are dropping frames. We should have more than enough bandwidth as this station is the only one accessing the raid. This has happened on a coupple of occasions. We have 2 other systems that are dual 2.7s running FCP 5 on 10.4 and they are having the same problem.
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5 Replies
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Supposedly, there’s an update for the XRaid that is supposed to aid in video capture. i don’t know as I don’t use an XRaid, but I have seen this come up in other forums for similiar problems.
https://www.apple.com/support/downloads/xserveraiddriver10.html
Jeremy
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G5 Dual 2Ghz <> 4GB RAM <> FCP 5.02 <> Kona 2
ATTO 42XS <> Huge Systems 4105 Fibre -
unfortunately frame dropping is like a cough, it is such a general symptom that it can be very hard to locate the issue- you could have: corrupt render file, corrupt sequence, corrupt prefs, too many sequences open, you could even have a drive failing— etc…
try to isolate the issue- is it the same spot on the timeline or are you dropping frames randomly… such questions are good places to start- and why aren’t you fully upgraded like the other comps on the san? 10.3.9 is a terrible os— very buggy.
and I have heard that xraid update is supposed to help for some issues… make sure everything is updated fully and completely. lastly, trash prefs, restart-
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Having same issues here with Xserve RAID. Everything is up to date. I will be on the phone with Apple this afternoon and see if I can solve the problem. The workaround for now is to capture to the internal drive. I was able to capture 18min on 10bit UC no problem. I have posted about this a few weeks ago, but with no real feedback. I am finding that I am not alone, and will provide any feedback with any solutions ASAP. Good luck.
Jared
Idea Spring Editing, Inc.
Denver Final Cut Pro UG -
Okay, I think I found the solution without having to call Apple. I have not been able to test this to see if it works yet, but it make complete sense.
change the admin setting (version 1.5):
go to the tab Performance and
check use controller Write Cache
uncheck Allow Host Cache Flushing (that was the problem)
check Use Drive Write Cache
uncheck Use Steady Streaming Mode
Read Prefetch :
check 128 Stripes (8Mb/disk)
If you have an UPS It will really help in case of a power shortage.
Jared
Idea Spring Editing, Inc.
Denver Final Cut Pro UG -
Thank you,
I will try this
Michelle
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