rogeriodec
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High CPU usage for no reason
Sonar has been working well almost all the time, but sometimes, without any reason, Sonar starts to consume the entire CPU:   To solve this, only closing Sonar and restarting it with my current project. Hence, the CPU normalizes:   Leaving the "Plug-In Load Balancing" option checked or unchecked makes no difference:  Someone would know how to solve this?
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gswitz
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Re: High CPU usage for no reason
2017/11/07 02:33:24
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when you press the 'E' key does it stop?
E bypasses all plugins.
If that does it, try bypassing different fx until you find the offender.
Are you using Synths? Sometimes I push the processor level with synths. I'm not sure what would do that with the playback stopped. I would think if playback is stopped and it's still redlining, you might have input echo enabled and be routing your audio into something heavy for your system.
StudioCat > I use Windows 10 and Sonar Platinum. I have a touch screen. I make some videos. This one shows how to do a physical loopback on the RME UCX to get many more equalizer nodes.
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rogeriodec
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Re: High CPU usage for no reason
2017/11/07 13:39:09
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I'll try to bypass any plugin or fx next time. Thanks.
But from what I see, there is no other way to solve this problem other than closing Sonar, right?
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bitflipper
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Re: High CPU usage for no reason
2017/11/07 13:50:49
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Global bypass may well stop the excessive CPU consumption.
What happens next, when you subsequently re-enable the effects, will be telling. If you're lucky, when you undo the global bypass the problem will return. If that happens, start removing plugins one-by-one until you've identified the culprit. If you're unlucky, the CPU usage will settle down after re-enabling all plugins, making it much harder to figure out which one was going nuts.
This may seem like too much trouble, compared to just restarting SONAR to make the problem go away. However, you're eventually going to want to know which plugin is giving you grief so you can avoid using it in the future.
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ibediggin
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Re: High CPU usage for no reason
2017/11/07 14:00:50
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i have the same issue and it is usually a cakewalk plugin
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rogeriodec
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Re: High CPU usage for no reason
2017/11/07 18:29:51
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It happened again, in the same project.  Suddenly, Sonar starts to take up too much CPU (and of course Audio Dropouts occur). But unfortunately, this sudden CPU consumption by Sonar continues even by clicking on "Bypass All Audio Effects". So this does not seem to be caused by plugins, or the Bypass button does not completely disable these plugins. Is there any other way to check what might be causing this bad behavior of Sonar?
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scook
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Re: High CPU usage for no reason
2017/11/07 19:07:31
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☄ Helpfulby rogeriodec 2017/11/07 19:59:57
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rogeriodec
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Re: High CPU usage for no reason
2017/11/07 20:05:27
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scook
Bypassing effects does not affect soft synth. One way to check if the problem is soft synth related is disconnect the synths. When the synth rack is docked with the browser the option is in the "Synth Settings Menu." When docked in the multidock or floating each synth has a power button on the left side in the rack. For more see https://www.cakewalk.com/Documentation?product=SONAR&language=3&help=Browser.11.html
Thanks, the problem was really the synths. I'm using 23 instances of Kontakt, in a massive orchestral template. But disconnecting the first instances, the CPU has returned to normal. And even reconnecting these first instances, the CPU has no more overhead. So, the problem is in the synth and not in Sonar, right? Or is Sonar still guilty?
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scook
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Re: High CPU usage for no reason
2017/11/07 20:14:14
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☼ Best Answerby rogeriodec 2017/11/07 20:43:24
It does suggest Kontakt or whatever Kontakt is running. I do not use Kontakt but would suspect any 3rd party libraries first.
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azslow3
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Re: High CPU usage for no reason
2017/11/07 20:45:59
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I do not have Kontakt... if that happens again, can you somehow see in Kontakt incoming MIDI activity?
Also, check unintended VSTi MIDI outputs (check what is available for any MIDI track input, all VSTs with output enabled will be listed there).
Does any track has MIDI echo enabled (can be if "auto" echo is used)? And if yes, does the problem still there once all echos are disabled?
I mean if there is some "MIDI loop" (unintentional/Sonar MIDI routing bug/etc), that can "activate" all your instances producing heavy load.
Have you already tried stop/start Audio Engine button as a possible quick workaround?
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msorrels
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Re: High CPU usage for no reason
2017/11/07 22:43:33
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Kontakt has very CPU expensive effects that instruments can use. More often than not it's the instrument rather than Kontakt itself, since an instrument is a full on script. Kontakt's IR reverb is expensive and a few of the other effects are also costly. Then there is all the scripting, which can easily be a problem.
If it's not the script/effects, then there is the memory issue. Kontakt has some settings that control how much it loads of samples into RAM but instruments also have some control there. If your are swaping due to low memory it can really effect performance and cause crazy CPU usage. Each instrument in Kontakt will show how much ram it is using. It wouldn't take much with 23 instances to blow that ram budget.
If you are loading multiple copies of the exact same instrument you should load them all in a single Kontakt instance, since they can share the sample memory. If however every instrument has its own separate samples, multiple instances of Kontakt are better for CPU loading.
if your signature is correct and you only have 16GB of RAM, I'd take a hard look at that. I'd say you need at least twice that much RAM to do anything I'd consider a massive orchestral template.
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dcumpian
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Re: High CPU usage for no reason
2017/11/08 13:21:00
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It may not be Kontakt if you have an AV that is persistently scanning files as they are loaded. That would cause a lot of overhead as Kontakt tries to load the samples. Not all AV software is smart enough to ignore samples.
Regards,
Dan
Mixing is all about control. My music: http://dancumpian.bandcamp.com/ or https://soundcloud.com/dcumpian Studiocat Advanced Studio DAW (Intel i5 3550 @ 3.7GHz, Z77 motherboard, 16GB Ram, lots of HDDs), Sonar Plat, Mackie 1604, PreSonus Audiobox 44VSL, ESI 4x4 Midi Interface, Ibanez Bass, Custom Fender Mexi-Strat, NI S88, Roland JV-2080 & MDB-1, Komplete, Omnisphere, Lots o' plugins.
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emwhy
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Re: High CPU usage for no reason
2017/11/08 15:51:04
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Before SPLAT incorporated load balancing Kontakt used to hit my first CPU core pretty hard especially on the Abbey Road Drums. As msorrels says the effects within the specific libraries can really take up a lot of cycles. There are many times on bigger projects where I will bypass the Kontakt effects and just use SONAR effects. That has helped a lot.
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gswitz
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Re: High CPU usage for no reason
2017/11/08 19:15:06
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I don't think load balancing works with synths today.
StudioCat > I use Windows 10 and Sonar Platinum. I have a touch screen. I make some videos. This one shows how to do a physical loopback on the RME UCX to get many more equalizer nodes.
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emwhy
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Re: High CPU usage for no reason
2017/11/08 20:02:03
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It works with a lot of my CPU hungry stuff. load balancing has helped with Kontakt and the Arturia collection for me, but I'm on an i7.
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chuckebaby
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Re: High CPU usage for no reason
2017/11/08 21:38:14
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emwhy
It works with a lot of my CPU hungry stuff. load balancing has helped with Kontakt and the Arturia collection for me, but I'm on an i7.
I don't think it works with Synths, unless they are in an FX bin. "When enabled, SONAR will attempt to load balance FX Racks that contain two or more unbypassed plug-in effects, including track FX Racks, bus FX Racks, clip FX Racks, FX Chains, ProChannel FX Racks, and ProChannel FX Chains."
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