P3D V5.4 High CPU Usage & Temps

[Lenovouser 11]

Job scheduler I can post tonight.

The CPU has 8 cores and SMT is active in the bios

[vonmar 124]

Have you tested a short flight with the default jet at the default airport without AI traffic or any other Add-on running?

Just checking:

Is this your post in P3D forum?

https://www.prepar3d.com/forum/viewtopic.php?f=6312&t=148321

 

Edited August 8, 2023 by vonmar

[Ray Proudfoot 9,040]

30 minutes ago, Lenovouser said:

Job scheduler I can post tonight.

The CPU has 8 cores and SMT is active in the bios

I'm unfamiliar with AMD processors. Does SMT double 8 to 16?

[Lenovouser 11]

3 hours ago, vonmar said:

Haben Sie einen kurzen Flug mit dem Standardjet am Standardflughafen getestet, ohne dass AI-Verkehr oder ein anderes Add-on ausgeführt wurde?

Ich prüfe gerade:

Ist das Ihr Beitrag im P3D-Forum?

https://www.prepar3d.com/forum/viewtopic.php?f=6312&t=148321

 

Yes

[dave2013 1,149]

I've always had this issue with P3Dv5.  It puts a heavy load on the CPU, even though it was supposed to shift more processing to the GPU.  Maybe it did, but I get near 90% loading on core 1 sometimes and 50+% on most other cores.  Now, my scenery settings are quite high, but with my new computer I didn't expect CPU loading to be almost like it was with my previous computer.

The CPU loading is higher when you're flying because P3D has to do more work to load and render new scenery as you move.  I even get a huge CPU draw when using the flight planner as it loads the map detail. 

One thing I've done which helps a bit is to set Unlimited frame rates in the sim and then use the Nvidia Control Panel to set max frames at 35fps.  You can probably also set 30fps and wouldn't see much difference, but I like to have a bit of "cushion" to ensure smooth frames in the sim.

I've also assigned P3D to use all cores except core 0, leaving that core free for other processes.

I have a very powerful machine, but P3D still manages to heavily load the CPU.

Dave

[vonmar 124]

39 minutes ago, Lenovouser said:

Yes

What was the result (in english) when you tested a short flight with the default jet at the default airport without AI traffic or any other Add-on running?

[newtie 540]

1 hour ago, dave2013 said:

I've always had this issue with P3Dv5.  It puts a heavy load on the CPU, even though it was supposed to shift more processing to the GPU.  Maybe it did, but I get near 90% loading on core 1 sometimes and 50+% on most other cores.  Now, my scenery settings are quite high, but with my new computer I didn't expect CPU loading to be almost like it was with my previous computer.

The CPU loading is higher when you're flying because P3D has to do more work to load and render new scenery as you move.  I even get a huge CPU draw when using the flight planner as it loads the map detail. 

One thing I've done which helps a bit is to set Unlimited frame rates in the sim and then use the Nvidia Control Panel to set max frames at 35fps.  You can probably also set 30fps and wouldn't see much difference, but I like to have a bit of "cushion" to ensure smooth frames in the sim.

I've also assigned P3D to use all cores except core 0, leaving that core free for other processes.

I have a very powerful machine, but P3D still manages to heavily load the CPU.

Dave

Dave, just for ***** and grins, try the stock AM and let me know what the result is.

http://izn-flightsim.s3-website-us-east-1.amazonaws.com/affinity.html#presetAnchor

[d.tsakiris 420]

5 hours ago, Lenovouser said:

To this day I don't understand why I have 60 degrees on the ground with the fat Addon Airport, and as soon as I take off it's 80 to 91 degrees.

As soon as you start moving, the sim starts loading the scenery you're flying towards. This loads up the rest of your cores, while sitting at an airport, however demanding, most of the times only uses one core (and the GPU of course).

[d.tsakiris 420]

5 hours ago, Lenovouser said:

 

Sorry, double post

Edited August 8, 2023 by d.tsakiris

[djbully 210]

Is your cpu voltage set to Auto in the bios? I find that many motherboards are sending much higher voltage than is needed to the cpu, like over 1.4 and up to 1.5 in some cases! 
 

setting manually to no higher than 1.35 should help reduce the temps. P3D does use some AVX features which is why the temps are so high! 
 

Anyway, if you are comfortable in the bios then definitely set a manual voltage. 

[Lenovouser 11]

8 hours ago, Ray Proudfoot said:

Danke. Veröffentlichen Sie Ihren JobScheduler-Abschnitt in Prepar3D.cfg und geben Sie an, wie viele Kerne Ihre CPU hat und ob Sie Hyperthreading oder das AMD-Äquivalent aktiviert haben.

[Global]

[JobScheduler]
AffinityMask=65535
P3DCoreAffinityMask=65535
MainThreadScheduler=0
RenderThreadScheduler=2
FrameWorkerThreadScheduler=4
 

[Lenovouser 11]

3 hours ago, vonmar said:

What was the result (in english) when you tested a short flight with the default jet at the default airport without AI traffic or any other Add-on running?

Yes, I have that too with default scenery and F35

[Lenovouser 11]

2 hours ago, djbully said:

Ist die CPU-Spannung im BIOS auf „Auto“ eingestellt? Ich finde, dass viele Motherboards viel höhere Spannung an die CPU senden, als nötig ist, beispielsweise über 1,4 und in manchen Fällen bis zu 1,5! 
 

Eine manuelle Einstellung auf nicht mehr als 1,35 sollte dabei helfen, die Temperaturen zu senken. P3D nutzt einige AVX-Funktionen, weshalb die Temperaturen so hoch sind! 
 

Wie auch immer, wenn Sie mit dem BIOS vertraut sind, stellen Sie auf jeden Fall eine manuelle Spannung ein. 

Yes the CPU voltage is on AUTO (Mainboard : Asus Crosshair Hero X570)

If I set the voltage, the CPU will always run at 1.35 without clocking down

Maybe I can set something about offset settings

[Ray Proudfoot 9,040]

14 minutes ago, Lenovouser said:

[Global]

[JobScheduler]
AffinityMask=65535
P3DCoreAffinityMask=65535
MainThreadScheduler=0
RenderThreadScheduler=2
FrameWorkerThreadScheduler=4
 

All 16 virtual processors are being used. It’s been a long time since I worked on this and what were the optimal settings especially for an AMD processor.

There was a big discussion about this here. The supplied calculator may help you determine if you have the best settings. I’m not convinced you have as it’s usual to turn some virtual processors off to assist the OS.

[vonmar 124]

19 minutes ago, Lenovouser said:

Yes, I have that too with default scenery and F35

Ok.
Thank you for the reply.

I see in a previous post you had reinstalled P3D.

But, I did not ask in my last post if you tested P3D in a default state 
with default Options/settings before adding any Add-ons?

Edited August 8, 2023 by vonmar