Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Editing › Slow Performance
- This topic has 23 replies, 1 voice, and was last updated 14 years ago by Anonymous.
- March 29, 2006 at 7:00 AM #41000AnonymousInactive
I have connected 4 new dvd burners to a PCI to IDE adapter card. They work but are amazingly slow. 8x fails and 4x takes 45 minutes to burn 3.8Gig.
I’ve tried connecting 1 directly to the IDE on the motherboard and it worked great. 8x burned same content in 7 minutes. (Same media brand).
The motherboard only has 1 IDE so I need to use the adapter card to connect 4. How can I increase the burn speed?
Try just burning one DVD disk on one of the DVD burners in your array. If the speed is back to 8X then your throughput on your MoBo is just not fast enough to feed 4 mpeg data streams at the same time for the (4) 8X burners you have. That would be a "bus line bottlerneck" issue.
Another possible problem… and I say "possible" could be available power from your power supply. With all of those devices hooked up, your system could be starving for power thus slowing it down. I would think you would need at least 450 watts or more and even that would depend on what kind of CPU and video card you have not to mention other components installed.
That WAS with just 1 drive. Even though they are all connected, I only used 1 drive.
Second, my power supply is rated for 550W. My motherboard is the Intel D975XBX with a Pentium D 2.8GHz dual core processor and 2Gig of DDR2 667 RAM. Plenty of power there.
I’ve posted this problem on several forums. 1 theory is that there may be an IRQ issue with the card slot. Too many resources to allow the card to operate properly. Given the problems I’m having, this sounds very likely. I’m going to try swapping slots tonight. Lets see if that fixes it.
Ok… Horsepower sure isn’t the problem.
It does come back to what looks like a bottle-neck, conflict or maybe even a PC setting issue. I’m assuming that there was some kind of driver needed for that card right?
I do like your theory on this.
What about DMA settings? I’m stabbing here but is there a place where you are able to set these drives to use DMA? It should be in your HARDWARE profile.
I guess I never heard of anyone trying this before on a regular PC let alone even being able too. My gut feeling is that you can’t do what you’re trying to do.
In my device manager, under IDE/ATAPI, there is 2 primary and 1 secondary channels. All are set to DMA. I can’t find this setting on the individual drive device.
The driver was installed and the device appears in the device manager as a SCSI controller.
This is a newly built computer which was specifically designed for video editing, DVD authoring and duplicating. Maybe no one has built such a system before but it must be possible since stand alone DVD duplicators are available on the market. What makes them so different? After all, its still a computer inside. The tower holds 5 optical drives and 5 hard drives. Certainly someone has max’d this tower out before.
If swapping slots, (or even assigning IRQs) doesn’t fix this, I may even try a new PCI card. This 1 is a few years old but barely used. Its an Ultra 133 TX2. I suppose the card could be bad but since this is a new system, its probably just configured wrong.
I deeply appreciate your help in solving this issue.
While I agree that duplicators are basically computers, they are configured a little differently because they don’t have multible HD’s, sound cards, graphic cards, network cards, modems and so fourth. Because of that they have more IRQ’s available for each of the optical drives.
Now by taking a PC with all of the above components and then add those extra DVD drives, I’m thinking that this is where the problem comes in. This is kind of why I liked your theory with the IRQ’s. You might be able to reasign these but then you might have problems with the other components.
Nonetheless all the best! Make sure you let us know becuase there are a lot of video junkies out here that would be very interested in doing what you’re attempting to do. Mainly me!