Avid Pro Audio Community

Avid Pro Audio Community

How to Join & Post  •  Community Terms of Use  •  Help Us Help You

Knowledge Base Search  •  Community Search  •  Learn & Support


Avid Home Page

Go Back   Avid Pro Audio Community > Pro Tools Hardware > Pro Tools HDX & HD Native Systems (Mac)

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 01-16-2012, 01:50 PM
bradp bradp is offline
Member
 
Join Date: Dec 1969
Location: worcester, ma usa
Posts: 106
Default Cores and cpu load

after a bit of trial and error, ive noticed that choosing 4 cores in pt instead of 16 cores (in the playback engine pref) i get a lower cpu load % on the system window.

Q: how many cores should be selected on a mac quad to get the best outcome? (lowest cpu load)

also,
Q: at what % of cpu native load would one expect a system to grind to a halt?

ill be doing some more testing to find "that perfect setting" ;-)
__________________
thanks, brad

Mac Pro:
PT 11.3.2 HD native, MIDI IO, 96IO
Mac Pro Desktop 4,1 osx 10.11.6., 8 Core 2.26GHz 2009 Intel Xeon MB535LL/A 16GB RAM 640GB HD ATI 4870
-----
MBP:
OS 10.11.6, MacBookPro 5,1, Intel Core 2 Duo 2.4GHz Memory: 8 GB Bus Speed:1.07 GHz, Boot ROM Version: MBP51.007E.B06, SMC Version (system):1.33f8
Reply With Quote
  #2  
Old 01-16-2012, 05:14 PM
musicman691 musicman691 is offline
Member
 
Join Date: Dec 2009
Location: The Sopranos State (NJ)
Posts: 19,136
Default Re: Cores and cpu load

Usual wisdom is to use one less core than what you have so for a dual quad core with hyperthreading turned on that would be 15 as a max.
__________________
Jack
See profile for system details
iMac dead & retired as of 11/4/17

QAPLA!
Reply With Quote
  #3  
Old 01-16-2012, 08:32 PM
bradp bradp is offline
Member
 
Join Date: Dec 1969
Location: worcester, ma usa
Posts: 106
Default Re: Cores and cpu load

hey music,
i noticed that when i use most of the cores, the % of cpu load goes up...
i would think the % would go down ...

any comments on max % cpu load before playback/record stopage?

thanks!
__________________
thanks, brad

Mac Pro:
PT 11.3.2 HD native, MIDI IO, 96IO
Mac Pro Desktop 4,1 osx 10.11.6., 8 Core 2.26GHz 2009 Intel Xeon MB535LL/A 16GB RAM 640GB HD ATI 4870
-----
MBP:
OS 10.11.6, MacBookPro 5,1, Intel Core 2 Duo 2.4GHz Memory: 8 GB Bus Speed:1.07 GHz, Boot ROM Version: MBP51.007E.B06, SMC Version (system):1.33f8
Reply With Quote
  #4  
Old 01-17-2012, 04:07 AM
musicman691 musicman691 is offline
Member
 
Join Date: Dec 2009
Location: The Sopranos State (NJ)
Posts: 19,136
Default Re: Cores and cpu load

Quote:
Originally Posted by bradp View Post
hey music,
i noticed that when i use most of the cores, the % of cpu load goes up...
i would think the % would go down ...

any comments on max % cpu load before playback/record stopage?

thanks!
That's why I said 'usual wisdom' as it's weird reading through the forum here as you'll see people that have less cpu load going with number of cores minus one and some have less cpu load going with lower numbers. It's one of those fine-tuning things where people have to find what works best in their particular setup.
__________________
Jack
See profile for system details
iMac dead & retired as of 11/4/17

QAPLA!
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pro Tools 10 not load plugins,freezing load.HELP javierboz Windows 2 11-08-2012 04:25 AM
Problems when using all 4 cores vs. 3 cores hopelessennui macOS 1 02-03-2012 06:54 AM
Mac Octo 2.26: Almost no difference between 2 Cores and 8 Cores Hive Guy macOS 8 05-10-2011 11:05 PM
better performance from 7 cores than 15 cores? stevesound macOS 4 03-30-2011 11:48 AM
Norton Disk Doctor... to load or not to load MixMonster 003, Mbox 2, Digi 002, original Mbox, Digi 001 (Mac) 10 04-05-2004 11:25 AM


All times are GMT -7. The time now is 12:40 PM.


Powered by: vBulletin, Copyright ©2000 - 2008, Jelsoft Enterprises Limited. Forum Hosted By: URLJet.com