Puzzled - Video Encoding: P-D 805 vs opty 165

[AkumaX]

using meGUI (an ffmpegx gui variant) to encode x264 (frameserved from VirtualDubMod)

was getting around 18fps from opty @ 2.5ghz
was getting around 17.5fps from p-d @ 2.66ghz (stock)

1) impressed with p-d, performance was almost on par at such a crappy architecture
2) but the REAL conundrum is that:

- P-D was utilizing about 85-90% of cpu (both cores)
- opty was only pinging around 65-70% of cpu usage

why?!

 

[SynthDude2001]

The only reason I can think of for the disparity in CPU usage is that maybe you had an I/O bottleneck...source and destination video were using the same hard drive maybe? If it's not that, I don't have an answer for you then

 

[3chordcharlie]

Originally posted by: SynthDude2001
The only reason I can think of for the disparity in CPU usage is that maybe you had an I/O bottleneck...source and destination video were using the same hard drive maybe? If it's not that, I don't have an answer for you then

Not much need to guess - the processors weren't maxed out, so they weren't getting enough work to do. Either there's an I/O limitation, or system memory was maxed out.

The usage numbers say that the opty is considerably faster than the P-D (and encoding is a relative strongpoint for netburst), but that the rest of the system isn't up to the task, so there's no benefit from the faster processor.

 

[AkumaX]

both systems were using the same hdd for******/dst

the 805 only has 2 x 512, 165 w/ 2 x 1gb

must try with another hdd...

 

[stevty2889]

Hmm, something is off, even at 3.6ghz my 805 can't keep up with my X2 @2.6ghz.

 

[n7]

Yeah there's no way your Pentium D should be getting even close results compared to the Opteron, nevermind an overclocked Opteron.
Something is wrong.

 

[0roo0roo]

lots of benchies
http://www.tomshardware.com/2006/05/10/dual_41_ghz_cores/index.html