total 50% cpu unitization while running dcs-mt small to big missions

[gman066]

hi,

i find the cpu utilization always 50% as shown attached pic, please help to have 100% utilization of all cpu cores. clean installation recently, no mods and any other type of scripts/rendering.

my cpu config:

i9 10850k, #core 10, logical 20.

3080 GPU

64GB ram

nvme 2TB.

 

thanks,

Md

dcs.log

[speed-of-heat]

you can't...

even though the 2.8x includes multi threading, it is no going to use all 10 physical cores and 20 threads, if you are getting 50% overall you  getting pretty good utilisation ...  this is still very early days and you shoudl be seeing an increase in the number of cores and threads used over the single thread version.  However to set your expectation , even when the work is "complete" you are not going to see every core in your CPU used... at 100% that's just not the way this is going to work ...

 

[Glide]

It is a common myth that if the CPU is at 100% you get better performance.  The CPU is performing at maximum efficiency at 50%.  I was a performance specialist at IBM for many years, and I measured many systems for performance.  When the system splits tasks across CPU's (time slicing) this adds latency.  You can disable virtual CPUs in the BIOS (e cores).  With 10 cores you have no need for virtual CPUs. 

[gman066]

1 hour ago, speed-of-heat said:

you can't...

even though the 2.8x includes multi threading, it is no going to use all 10 physical cores and 20 threads, if you are getting 50% overall you  getting pretty good utilisation ...  this is still very early days and you shoudl be seeing an increase in the number of cores and threads used over the single thread version.  However to set your expectation , even when the work is "complete" you are not going to see every core in your CPU used... at 100% that's just not the way this is going to work ...

 

Hey,

thanks for your reply. so, its not scalable or proper distributed yet if i understand the above. 

Edited June 10, 2023 by gman066

[speed-of-heat]

6 hours ago, gman066 said:

Hey,

thanks for your reply. so, its not scalable or proper distributed yet if i understand the above. 

 

It is more scalable than before MT...it still has limits, actually like almost every MT code ever written... As Glide says this more complex than just use all the CPU's, there are trade offs, and some of them don't automatically increase performance... some of them are just the physics of moving things around makes things worse.

[5ephir0th]

19 hours ago, gman066 said:

Hey,

thanks for your reply. so, its not scalable or proper distributed yet if i understand the above. 

 

Even if DCS were perfectly scalable you will have this, its just DCS doesnt need more work from your CPU, it can be just because it doesnt needed or  because you, simply, are GPU limited and DCS doesnt need more from CPU at the actual framerate.

I dont know a single game that uses 100% of the CPU that not be a bug

[fab.13]

Hello

You may have to look at cpu or gpu utilisation if you meet some problems,

or check if you have ressources to test upper DCS settings

If DCS run fine, just play

[Temetre]

Am 10.6.2023 um 21:03 schrieb Glide:

The CPU is performing at maximum efficiency at 50%.

But thats a myth too, or at least a massive oversimplification. Dont think its useful to say stuff like that when its not really working out that way in reality.

Or maybe its true for datacenters, but with games its usually a few cores (often just 1 or 2) bottlenecking, it depends on how well devs can spread game tasks. MT for DCS isnt really about adding multithreading, but more about seperating the most complex tasks into threads to mitigate bottlenecks.

Edited June 12, 2023 by Temetre

[Glide]

3 hours ago, Temetre said:

Dont think its useful to say stuff like that

The most difficult thing in the world to see is your own point of view.  Let me help you out.  My post was intended to reset the OP's expectations about CPU utilization and provide a useful suggestion for disabling virtualization on their system.  What's the intent of your post?  To correct MY understanding of how systems work?  How does that help the OP?  Thank you for your contribution to the DCS community.

[Temetre]

vor 19 Minuten schrieb Glide:

The most difficult thing in the world to see is your own point of view.  Let me help you out.  My post was intended to reset the OP's expectations about CPU utilization and provide a useful suggestion for disabling virtualization on their system.  What's the intent of your post?  To correct MY understanding of how systems work?  How does that help the OP?  Thank you for your contribution to the DCS community.

The part ive quoted is just not true for games. Youre spreading a misconception, which people will likely repost.

Edited June 12, 2023 by Temetre