Difference in Playback Performance between Catalyst and Quicktime

[Seantava]

there are several bottlenecks - and they SHIFT all the time with hi-res files - sometimes its graphics card, sometimes cpu and sometimes its disc bandwidth... all 3 are relevant and interact

yes - for animation codec - you might need a higher peak data rate than from a single ssd- try raiding 2 together.
with animation codec percentage 75% etc isnt the same as 75% with photojpeg-
or try using uncompressed files.
uncompressed might work better as the cpu has less to do - but you will need much more drive bandwidth


richard

Hi Richard,

today i´ve tried a setup with 2 MTron 128GB Drives in a striped Raid setup. Maybe i´m too stupid, but i noticed a significant performance loss during playback AIC Codec Files. I´m 100% shure that the raid settings were fine.

So, i switched back to a single SSD setup.


Any Idea?

Holger

[SourceChild]

...i noticed a significant performance loss during playback AIC Codec Files. I´m 100% shure that the raid settings were fine...

Unless I'm mistaken, you're not using a RAID controller?

If you are not using a RAID controller then the processing resources of the computer are used to control the RAID. Once you do this, the performance bottleneck becomes the processor. A RAID card independently processes the RAID leaving the processor and GPU free to render the output.

[samsc]

Unless I'm mistaken, you're not using a RAID controller?

If you are not using a RAID controller then the processing resources of the computer are used to control the RAID. Once you do this, the performance bottleneck becomes the processor. A RAID card independently processes the RAID leaving the processor and GPU free to render the output.

no. not true. this is a data transfer problem not cpu.

if one ssd can do 80MB/s 2 ssd should do close to 160MB/s enough to do uncompressed hi-def
in this case using raid should double data throughput rate-
this would be a reason to use raided ssd. and it should work.

[samsc]

Hi Richard,

today i´ve tried a setup with 2 MTron 128GB Drives in a striped Raid setup. Maybe i´m too stupid, but i noticed a significant performance loss during playback AIC Codec Files. I´m 100% shure that the raid settings were fine.

So, i switched back to a single SSD setup.


Any Idea?

Holger

what raid setup did you use?