Performance of dvd-rb with a P4 ~3.2 GHz?

[NaN]

Hi!

I'm thinking of getting a new machine in the not-so-near future (autumn?) and - sure I like the Athlon64 - was wondering how well the P4 Prescott with about 3.4GHz does in reencoding.

My current machine is a dual rig with 2x1.4-S P3s and it achieves a speed of roughly 1.3-1.6, so a complete process takes about 3.5-4.5 hours.

The new workhorse should do far better of course.

Could somebody with such a hardware tell me how long a complete process lasts? Just some average numbers for a standard length (~100min) video?

Maybe some Prescott/Northwood owners could take the time, it would really be appreciated!

Thanks for reading & posting ;-)), NaN

PS: please post cce performance and the time it takes - Thanks!

PPS: ad Moderators: please don't move that thread to cce, I'm sure you know that the performance is different for cce and dvd-rb.

[Lagoon]

I usually encode between 2.4 and 2.9 using a P4 2.8@3.5 and CCE 2.67

Edit : I don't understand why the performance should be different using dvd-rb :confused: Never used it yet.

[NaN]

It uses avisynth for frame serving. Besides I would like to know wether the harddisks influence - say slow down - the whole process (the first and third/last part of that relies heavy on the hdds).

Thanks for your reply! NaN

[KungFuCow]

I have multiple RAIDs in my system along with lots of single drives. I havent noticed a difference in RAID vs Non RAID. My system sounds pretty much like what you're looking at. P4 3.2Ghz, 2GB DDR, 2 WD 10K RPM Raptors in RAID 0, 2 Seagate 80GB 7200 RPM HDs in RAID 0, 3 x WD 250GB 8MB Cache HDs, etc. Encoding on the 250s is about the same as encoding on the 250s. However, the prepare stage on DVD RB is much faster on the RAIDs than on the 250s.

[cyberbob25]

I have a P4 3.0 GHz overclocked to 3.1, but currently only a 5400 RPM hard drive (getting an SATA RAID soon).

I still average about 3 in the CCE encoding phase, and from start to finish on a 7GH movie, Rebuilder did it in about 200 minutes on 5 passes.

[NaN]

Interesting...Thanks for your replies!

So about 200mins for 5-pass, so for 2-pass ~100-120mins maybe?

Cheers, NaN

@KungFuCow: what's your performance? The disk subsystem isn't the bottle neck for sure...

[Noah]

I don't think hard drives would be a bottleneck in any typical setup.

Your CPU(s) would have to be very fast and your drives very slow.

[SLA]

It's quite easy to calculate this:
Supposed average Inputstreambitrate would be 10.000kbit/s (which is too high for DVD) and your CPU can encode at 3x realtime. This would make a read-rate of 3,8MB/s (10.000/8*3). Even strongly fragmented Harddrives can read/write 10MB/s (non-raid)

[NaN]

I meant it ironically...of course you're right!

However don't forget that files get constructed based on other files, so it is hdd-wise the same as copying files (access the 1st file to construct another), if you have just 1 slow hdd (maybe even on the same channel as another device or 2 hdds on the same IDE channel) the performance can be as slow as 5-6MB/s without additional interruptions of the os.

In real life the performance should be sufficient, though.


Would be great if some more could take the time to drop their numbers!

Thanks, NaN

[cyberbob25]

So about 200mins for 5-pass, so for 2-pass ~100-120mins maybe?

When I backed up Catch Me If You Can (7.3GB after stripping out all extras, menus, credits, etc.), the encoding phase took approx 47 mins on 2 pass. So adding prep and rebuild, approx. 75-80 beginning to end on that movie.

[NaN]

Great speed! 80mins are really fast.

Cheers, NaN

[luphy]

Doesn't encoding speed also depend on the amount of compression needed for a particular movie?

[NaN]

Yes. It depends on a lot of things actually. For myself getting just an impression what modern hardware can do, it's good enough.

Cheers, NaN