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Sporadic CPU usage issues

Last post Mon, May 19 2014 by Cyril Blanc, 23 replies.

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Posted on Fri, May 09 2014 19:43
by MDesigner
Joined on Thu, Jul 24 2003, Chicago, Posts 124

I've noticed the CPU usage meter in the bottom right varies greatly, but randomly. Sometimes it hangs around 10-15% which is great. Other times it's above 70%, even just idling. I can't figure out why it's doing this.

I'm on a Mac Pro, 10.8.5, 8-core 2.66GHz, 32GB RAM, running VE Pro and DP8 on the same machine. (though this issue occurs w/ Cubase as well) I'm open to suggestions!

Sam Hulick
Composer
http://www.samhulick.com/

Posted on Sat, May 10 2014 04:02
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2664

Buy a sata III card and put your lib on raid 0 of 2 x ssd

MacPro 2010 12 core 2.93 ghz 64 GB Mac OS X 10.11 2722 Rocket Raid Sata III card with 8 x ssd
VSL lib on a Raid 0 of 4 x 256 GB ssd Sata III - Raid 0 of 4 x 64 GB for other libs
System on a 1 TB ssd
Audio Motu PCI system 84 ins / 64 outs
Kbd : P80 Yamaha, S88 and S25 Komplete Kontrol, DX7
I-Controls Pro, 2xMidi expression pedals
Synth : many....
---
Macbook pro Retina 2.7 ghz 16 GB
---
Mac Mini server 10.10 (server, Itunes, WEB, and Backup )
--
Logic X , Dorico, Band In A Box, ORB Composer
VSL : MIR PRO, Appassionata Strings I, Solo strings , Wind and Brass Complete, Dimension Brass, Big Band Orchestra series
Kontakt, Omnisphere, QLSO, QLSC, CS 80, Arturia V5, Maximo, Realivox Blue. CS 80 V3, The Orchestra 2, Art Conductor 5, Genesis Children Choir, Lunaris, Lacrimosa

Final Cut pro
Camera full HD

Posted on Sat, May 10 2014 18:24
by MDesigner
Joined on Thu, Jul 24 2003, Chicago, Posts 124

I'm not entirely convinced that's the issue.

Sam Hulick
Composer
http://www.samhulick.com/

Posted on Sat, May 10 2014 23:15
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2664

MDesigner wrote:

I'm not entirely convinced that's the issue.

What disk do you have ?

If you are not convince that ssd will fix you load problem, try to find a solution

Posted on Sun, May 11 2014 05:36
by civilization 3
Joined on Sat, May 16 2009, SF Bay Area, Posts 1658

MDesigner wrote:

I'm not entirely convinced that's the issue.

I'm not at all persuaded it would be the issue. Because I have a less powerful machine, no RAID, no special anything, and I run Cubase and quite some VE Pro on the one machine and do not experience anything like a 70% of CPU while idling. It could be a network bottleneck like dynamic IP. Don't know.

MacBook Pro 16,1: 2.3 GHz 8-core i9
64GB 2667MHz DDR4
OSX 10.15.6
VE Pro 7

Posted on Sun, May 11 2014 09:21
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2664

civilization 3 wrote:

. It could be a network bottleneck like dynamic IP. Don't know.

He has only one computer ! you cannot have an network bottleneck !

Hope this guy did the minimum check :

- disable WIFI, Bluetooth

- set his preload buffer to maximum

- set its DAW with large buffers and it's I/O buffersize to maximum (1024)

If not he should give us all the values he set !

Posted on Mon, May 12 2014 14:29
by DAW PLUS
Joined on Wed, Nov 16 2011, Posts 9

If the system is not connected to a DHCP server device it might interfere if he hasn't got a static IP.
Also, an SSD and especially RAID will not fix his issues.

OP, do you use the VST3 version of a VEP audio input by any chance (and have it active in said project)?

Leon
Project Manager Audio
www.xi-machines.com

Posted on Wed, May 14 2014 19:12
by MDesigner
Joined on Thu, Jul 24 2003, Chicago, Posts 124

Correct, no network.. single machine. And the CPU problem is sporadic like I said. Sometimes it's at 10%. Other times, I'll open the same project and it connects to VE Pro and then the CPU says 45-60%. Doesn't make any sense.

I'm not using the VST3 version. Digital Performer doesn't currently support VST3.

Sam Hulick
Composer
http://www.samhulick.com/

Posted on Wed, May 14 2014 20:02
by civilization 3
Joined on Sat, May 16 2009, SF Bay Area, Posts 1658

Cyril wrote:

civilization 3 wrote:

. It could be a network bottleneck like dynamic IP. Don't know.

He has only one computer ! you cannot have an network bottleneck !

All he said initially was he was running the DAW on the same computer as VEP. That in itself is not evidence there is not another computer. I am aware of your thing for RAID and SSD, but the lack of it is not likely the cause of this.

Is there a performance issue that goes with this spike, or are you just troubled to see it?

MacBook Pro 16,1: 2.3 GHz 8-core i9
64GB 2667MHz DDR4
OSX 10.15.6
VE Pro 7

Posted on Wed, May 14 2014 21:25
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2664

Please report all settings

Posted on Thu, May 15 2014 07:57
by molemac_824
Joined on Fri, Jan 31 2003, London, Posts 87

Hi Cyril,

I am having similar issues ( see post yesterday about new mac pro) . Can you clarify for me

DisbaleBluetooth : Does this make a diference ? ( I like to use the apple bluetooth mouse for horizontal scrolling

- set his preload buffer to maximum

Is that in Vienna instruments ? What about Kontakt ?

set its DAW with large buffers and it's I/O buffersize to maximum (1024)

For me a 1024 buffer is too high latency wise

Charlie

Posted on Thu, May 15 2014 09:46
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2664

Hi Charlie

You disable all non needed (Wifi, Bluetooth, Flash ......)

To see if you have enough CPU power and enough fast disk you should set all pre-load buffer size to maximum (in you DAW and in VSL)

Is there are no more problems, you can start to reduce them until you get problems ! and set it back to the values where there is no problem.

Then if the latency is not acceptable, you should go with SSD and/or put memory to 32 or 48 GB, and/or change computer, and/or add slaves

For Kontakt it is the same, also it is better to have Kontakt in the DAW, if you put it in VEP you will add another layer in the processing.

Best

Cyril

Posted on Thu, May 15 2014 09:51
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2664

civilization 3 wrote:

Is there a performance issue that goes with this spike, or are you just troubled to see it?

If VSL engine loads in memory a small chunk of the sample he has to play (depending of the size of the preload buffer size) if it does not have time to read the rest of the sample in time, you get problems.

VSL engine, need fast CPU and fast disk access, all that depending of your template.

Posted on Thu, May 15 2014 16:46
by molemac_824
Joined on Fri, Jan 31 2003, London, Posts 87

Thats why I bought the new mac pro 3.5ghz 6core with 64 gig of ram and 4 1gig ssds,

Should have just bought a cheap pc

Charlie

Posted on Thu, May 15 2014 17:08
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2664

If you want I can test one of the piece where you have problems

My CPU is idle à 65 % on large and heavy score, and at 85 % on normal

Can you give more detail on how you have organize your orchestral template.

Posted on Thu, May 15 2014 19:42
by civilization 3
Joined on Sat, May 16 2009, SF Bay Area, Posts 1658

Cyril wrote:

civilization 3 wrote:

Is there a performance issue that goes with this spike, or are you just troubled to see it?

VSL engine, need fast CPU and fast disk access, all that depending of your template.

I was asking the original poster. Your setup is performing poorly, or are you just looking at activity monitor and it's unsettling?

That [Sam's] computer is very comparable to mine, and I get on pretty well. Without worrying about all of this theory, without SSD, without RAID. I actually do music all day with relatively few hiccups. I do not think the things Cyril is saying are it. For instance, the preload buffer for Vienna is by default high enough.

So, first things first: are you having trouble with performance or just trouble with something you see in activity monitor? I have seen things that don't even add up in it, for instance.

The symptoms of actual troubles will be more indicative of problems I think.

MacBook Pro 16,1: 2.3 GHz 8-core i9
64GB 2667MHz DDR4
OSX 10.15.6
VE Pro 7

Posted on Thu, May 15 2014 21:37
by MDesigner
Joined on Thu, Jul 24 2003, Chicago, Posts 124

Not sure what settings I need to post. I've got 2 threads per instance. My buffer in Digital Performer is set to 256 which works fine for me.. 512 introduces a little too much latency for my tastes. But regardless, the CPU doesn't seem to be connected to buffer size at all. Like I said, it's totally random. Sometimes it's running at 9%, sometimes 90%. When it's that high, yes, I get lots of stuttering and skipping.

Sam Hulick
Composer
http://www.samhulick.com/

Posted on Fri, May 16 2014 04:29
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2664

Can you give the figure in Activity monitor/memory after you had "stuttering and skipping."

Put 8 core in VEPRO setting and Pre-load buffer to normal in Directory Manager

Put DP with 1024 and test if it is playing ok, if not put pre-load buffer to bigger (you must re-launch VSL each time you change a parameter)

see : You disable all non needed (Wifi, Bluetooth, Flash ......)

Reboot, do not lauch any softare, only VSL and DAW

To see if you have enough CPU power and enough fast disk you should set all pre-load buffer size to maximum (in you DAW and in VSL)

Is there are no more problems, you can start to reduce them until you get problems ! and set it back to the values where there is no problem.

Then if the latency is not acceptable, you should go with SSD and/or put memory to 32 or 48 GB, and/or change computer, and/or add slaves

For Kontakt it is the same, also it is better to have Kontakt in the DAW, if you put it in VEP you will add another layer in the processing.

Posted on Mon, May 19 2014 02:35
by MDesigner
Joined on Thu, Jul 24 2003, Chicago, Posts 124

Buffer settings make no difference.. again, sometimes VE Pro works fine, sometimes not. Directory Manager doesn't matter, since I'm not using any Vienna instruments. Kontakt only.

It just spiked a while ago at around 60-70%. In Activity Monitor it said 450% CPU usage! The only thing that fixes it is restarting VE Pro and reloading my template. Now it's idling at around 25%. Activity Monitor reports around 170% CPU usage.

Sam Hulick
Composer
http://www.samhulick.com/

Posted on Mon, May 19 2014 02:59
by civilization 3
Joined on Sat, May 16 2009, SF Bay Area, Posts 1658

higher than 100% for an application just means that more than one core is being used.

MacBook Pro 16,1: 2.3 GHz 8-core i9
64GB 2667MHz DDR4
OSX 10.15.6
VE Pro 7

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