Whats reccomended for Optimizing the Ram Preview specifically.

[Ericbowen]

16GB of ram is not enough for 8 Cores. You really need 2GB of ram per core/thread and atleast 4 to 8GB left for other programs. I would suggest moving to 32GB of ram atleast. I suggest setting the memory saved for other applications to 4GB. Set the ram per background CPU to 1.5GB and use what cores you can. Smaller comps should not exceed that most of the time. No this does not effect Media Encoder. AE 2014 has a very large ram profile so get as much ram as you can.

Eric-ADK
Tech Manager
support@adkvideoediting.com

[Brian Charles]

[Joshua Chaulk] “I find i spend more time waiting for ram previews than I do actually working!”

It is my experience that enabling Multiprocessing for RAM previews actually can actually slow down some RAM previews, hence the new option to enable Multiprocessing only for rendering and not previewing.

The speed of previews is affected by many factors, complexity of a composition, number and type of effects, how fast the source media can be loaded and processed. An SSD used for cache can improve performance significantly.

[Joshua Chaulk]

So should I set my “CPUs reserved for other applications” to 0?

We were considering swapping out our C drive to an SSD to improve speed, but would you recommend a ram upgrade before an SSD upgrade?

[Joshua Chaulk]

[Brian Charles] “It is my experience that enabling Multiprocessing for RAM previews actually can actually slow down some RAM previews”

So Your saying that I should check the box that says “Only for Render Queue, not for Ram Preview”
and that should increase my Ram preview speed? I’m not saying your wrong, But isn’t the whole purpose of that option so that RAM previews are faster by utilizing the multi-core processor instead of just using the RAM?

[Brian Charles]

[Joshua Chaulk] ” isn’t the whole purpose of that option so that RAM previews are faster by utilizing the multi-core processor instead of just using the RAM?”

The purpose of that option is to enable more cores/threads for any processing task After Effects has to do, so both Renders and Previews •can• be faster.

Since After Effects does this by spawning new instances, the time to spawn the instances can slow down the start of a preview – hence the option to enable it •only* for renders and not previews. Sometimes it is faster for previews to leave MP disabled.

[Ericbowen]

Yes set the CPU reserved for other applications to 0. Definitely get more ram before an SSD if you want to utilize all of the threads in AE. The Ram preview is faster on a system with more cores if you use the multiprocessing for ram preview as well. Don’t turn that off for ram preview unless you have to for something.

Eric-ADK
Tech Manager
support@adkvideoediting.com

[Ericbowen]

The OS moderates threads based on interrupt and priority. If another process needs to take cpu time it will interrupt based on priority. I have been setting these to zero for years and never has an issue with it since AE uses CPU’s as background resource priority.

Eric-ADK
Tech Manager
support@adkvideoediting.com

[Joshua Chaulk]

[EricBowen] ” Definitely get more ram before an SSD”

I have heard people say that having a lot of RAM can actually slow down the computer when the RAM is not being used. And I don’t always do video work here on this computer, I mostly work in Photoshop all day. So the only time I actually use my ram to it’s fullness is maybe twice a week. Do you still think I should be upgrading RAM instead of the SSD? The SSD should improve render times as well am I right?

[Brian Charles]

[EricBowen] “The OS moderates threads based on interrupt and priority. If another process needs to take cpu time it will interrupt based on priority. I have been setting these to zero for years and never has an issue with it since AE uses CPU’s as background resource priority.”

Are you saying that setting available CPU’s to zero won’t affect other application renders or processes? e.g. Premiere Pro, Media Encoder, Compressor etc?

Todd Kopriva of Adobe posted a warning regarding over-scheduling processors which seems to contradict what you wrote.

https://blogs.adobe.com/aftereffects/2010/03/performance-tip-dont-oversched.html

[Jp Pelc]

Yes that’s the purpose, but I’ve also found that enabling multiprocessing slows down my RAM preview significantly. Try disabling it and see how it works