Is DVD2One a CPU intensive program

[BlakIce]

most people talk about dvd2one encoding in 20 min well mine on average takes 40min i was wondering if it was cpu intensive if that was the case i would move it to my dual processor even thought its probably not written in smp it will free up some cpu cycles on my p4 which is only a 1.7 with 256k cant wait till i get my 2.53 on friday

[schlaufer]

Hi,
to my perception, its main bottleneck is I/O. Do you compress with source and destination on the same harddrive? Try to distribute them across two physical diffrent drives and see your speed increase drastically.

[wangofree]

Originally posted by schlaufer
Hi,
Try to distribute them across two physical diffrent drives and see your speed increase drastically.
That really does make a difference? I've got a 40gb 7200 and the original Dell 7.5gb 5600....I'll try that tonight.

:D WF

[mpucoder]

Want to figure how much time gets wasted using one drive? Multiply the drive's average seek time (usually around 10ms) by the number of times it will need to reposition the head. Typical transfers are in blocks of 4K, so a DVD will have roughly one million block transfers, or 2 million seek operations. 2 million x 10ms = 20,000 seconds. Now subtract the seek time for using 2 drives, which, if properly defragged, and nothing else accesing them (like other tasks, and the C: of course will be interrupted periodically by Windows), will be 0.

Edit: I just checked my own computer's read-ahead buffer size, and it's 64K. That means 1/16 the transfers as above, making it 1,666 seconds (about 27 minutes)

[xmenxmen]

Or better, strip those babies with a RAID controller.

[schlaufer]

Originally posted by xmenxmen
Or better, strip those babies with a RAID controller.
No, in this special case, two separate disks are far superior to stripe sets. In a stripe set you can still run into the situation described by mpucoder.

But you can still gain further speed if you use two physically disjoint stripe sets or RAID arrays. So if you want DVD2One do its work in, say, 5min, use a 3GHz Athlon or Pentium 4 and two different 4 disk set RAID5 sets on two different RISC-RAID-controllers with 10,000 upm SCSI disks.

Or, for less or the same money, buy all those movies twice, one for watching, one for backup. ;)

Cheers,
schlaufer

[wangofree]

I ran dvd2one on the same title set on 1 physical drive and then I ran it again using 2 seperate drives for source and destination.

Splitting the drives saved me 30 seconds..... :confused:

Oh well....

:D WF