Trying to understand what is limiting my fps. Pics inside

[S-GERAT]

While getting a great performance in 1.5 beta versus the old engine, I'm trying to understand why if my Cpu or Gpu aren't working at 100 % I didn't get more fps.. Maybe something is limiting the Cpu to work at 100 % ( In the thread used by DCS ). My computer specs are = I5 2500K @ 4.2 Ghz, 980 Ti gpu, 16 GB ram, ssd..

 

And in these pics I am not using any fps limiter, vertical sync etc..

 

 

 

Here is the dropbox link in order to view correctly the data and more pics = https://www.dropbox.com/sh/hqgr6n6wr07ni9r/AACmFyqPnYF1Be-4feHzQCkza?dl=0

 

 

Regards and thanks in advance

Edited October 7, 2015 by S-GERAT

[BitMaster]

Install MSI Afterburner software to see what is happening while you game.

 

It has graphs for about anything and works with all cards from all vendors.

 

My 8th core from i7 is always somewhere between 80-95% load, no matter if I play at 3.4GHz or 4.8GHz, if I underclock my GPU as low as it goes or overclock it 500MHz faster ( roughly 1/3 more GPU speed )... by a miracle, its always 110fps..more or less, depending on the airframe, scenery, height etc... but it does not effect performance as it used to do with 1.2.x.

 

I am still finding things and it needs time to play and record 2 flights with same settings in DCS but different speeds from the far edges of the MHz envelope. This is signifikant, as my i7 clocks 1GHz higher if oc, 3.4/3.8 default vs 4.8/4.8 oc ... and 949MHz GPU vs 1500MHz GPU ( along with RAM being 8000MHz vs 7000MHz default ).

 

If, at all, it's less than 10fps or 10% in my case, for about twice the wattage, heat and lifetime reduction.

 

For now, I play underclocked :)

 

Bit

[OnlyforDCS]

The new engine is much more efficient, this is why your CPU/GPU loads are less than they were in the old engine.

 

Additionally I would suggest you turn on adaptive VSYNC, as you will experience much smoother gameplay throughout, since fluctuations between frame rates (even fluctuations between high frame rates) have been known to cause jitters and micro-stutters.

Edited October 7, 2015 by OnlyforDCS

[S-GERAT]

Install MSI Afterburner software to see what is happening while you game.

 

It has graphs for about anything and works with all cards from all vendors.

 

My 8th core from i7 is always somewhere between 80-95% load, no matter if I play at 3.4GHz or 4.8GHz, if I underclock my GPU as low as it goes or overclock it 500MHz faster ( roughly 1/3 more GPU speed )... by a miracle, its always 110fps..more or less, depending on the airframe, scenery, height etc... but it does not effect performance as it used to do with 1.2.x.

 

I am still finding things and it needs time to play and record 2 flights with same settings in DCS but different speeds from the far edges of the MHz envelope. This is signifikant, as my i7 clocks 1GHz higher if oc, 3.4/3.8 default vs 4.8/4.8 oc ... and 949MHz GPU vs 1500MHz GPU ( along with RAM being 8000MHz vs 7000MHz default ).

 

If, at all, it's less than 10fps or 10% in my case, for about twice the wattage, heat and lifetime reduction.

 

For now, I play underclocked :)

 

Bit

 

Hi Bit,

 

The data in the screenshots is obtained from Msi Afterburner, but in my case my 4th Core ( My i5 didn't have Hyperthreading ) never goes above 65-70 %.. I have tried to give priority to the dcs process ( In Prepar3d V2 this works ) without success..

 

I also get framerates above 100 fps flying in missions with few IA units ( usually the 120 limited by the graphics.lua ) but in more complex missions the performance fall apart.. and that's why I'm trying to find a fix to this.. I want to get a 100 % cpu core or a 100 % gpu when fps aren't limited.

 

The new engine is much more efficient, this is why your CPU/GPU loads are less than they were in the old engine.

 

Additionally I would suggest you turn on adaptive VSYNC, as you will experience much smoother gameplay throughout, since fluctuations between frame rates (even fluctuations between high fram erates) have been known to cause jitters and micro-stutters.

 

Hi mate,

 

Every graphic engine ( at least the vast parts I find in my gaming life ) when the fps are unlimited should run the Cpu and Gpu at 100 % in order to get the max fps possible. If the Cpu is used at 100 % , it limits the gpu, so in that case we get a 80 % gpu usage for example.. If on the contrary the Gpu is working at 100 % and the Cpu can't make more calculations because the bottleneck is in the Gpu then the Cpu can't go at 100 %.

 

I didn't have any stutter problem or tearing, and I have the fps limited at 60 fps.. but in some missions I am not getting 60 fps and neither my Cpu or Gpu are working at full.. so something wrong is here.. It can be also memory bandwich or vram.. I need to check these ones too

Edited October 7, 2015 by S-GERAT

[OnlyforDCS]

Ok now I understand what you are getting at, however consider that the engine itself runs at a certain speed and that to utilize the CPU to 100% you need to have some heavy simulation going on in the background. Having LOW FPS by itself doesn't mean that the CPU would be utilized at 100%, though low FPS combined with a low GPU load (and a low CPU load) would indicate that something might not be working correctly in the EDGE renderer.

[S-GERAT]

Ok now I understand what you are getting at, however consider that the engine itself runs at a certain speed and that to utilize the CPU to 100% you need to have some heavy simulation going on in the background. Having LOW FPS by itself doesn't mean that the CPU would be utilized at 100%, though low FPS combined with a low GPU load (and a low CPU load) would indicate that something might not be working correctly in the EDGE renderer.

 

That's what I am getting.. 50 % of the Cpu used core load and 60-70 % Gpu load.. obviously not all the time.. if I run for example a free flight quick mission I can get a 100 % Gpu load if I not limit the fps.. but that is at more than 120 fps..

 

If somebody from ED can talk us about how the engine works in that topic, if that behavior is normal and if it is going to improve in the future I will be very grateful with them.

[JABO2009]

 

Additionally I would suggest you turn on adaptive VSYNC, as you will experience much smoother gameplay throughout, since fluctuations between frame rates (even fluctuations between high frame rates) have been known to cause jitters and micro-stutters.

 

Is turning VSYNC to "ON" causing any FPS loss ?

killing eventual micro stutters would be nice - will test it, but I dont wanna "spend" any FPS for this...thx in advance

[BitMaster]

It is strange as I have stated elsewhere in 1.5 bug section, it really doesnt scratch DCS a tiny bit if run at 3.4/3.8GHz stock Intel settings or if I oc to 4.8/4.8GHz and also almost fry my vGa card at 1500MHz clock and 8000MHz VRAM, it just stays at 121 fps.

 

OK, KA-50 bug brings it down to 30 when I use Vikhrs and Sensors, but the lowest I ever get, really, in dense environments and two SU-27s exploding in my view and a A-10 taxiing...is roughly 60-65 fps....and this is very rare. usually way above 80, no matter where my CPU/GPU is clocked at.

 

I DONT COMPLAIN !!! I LOVE IT THIS WAY !!! LESS OC = less fans for radiator = less noise ;)

 

right now I play @ 121fps and my CPU is 34°C and my GPU 43°C, steady, when gaming HOLA ;)

 

 

Bit

[S-GERAT]

It is strange as I have stated elsewhere in 1.5 bug section, it really doesnt scratch DCS a tiny bit if run at 3.4/3.8GHz stock Intel settings or if I oc to 4.8/4.8GHz and also almost fry my vGa card at 1500MHz clock and 8000MHz VRAM, it just stays at 121 fps.

 

OK, KA-50 bug brings it down to 30 when I use Vikhrs and Sensors, but the lowest I ever get, really, in dense environments and two SU-27s exploding in my view and a A-10 taxiing...is roughly 60-65 fps....and this is very rare. usually way above 80, no matter where my CPU/GPU is clocked at.

 

I DONT COMPLAIN !!! I LOVE IT THIS WAY !!! LESS OC = less fans for radiator = less noise ;)

 

right now I play @ 121fps and my CPU is 34°C and my GPU 43°C, steady, when gaming HOLA ;)

 

 

Bit

 

Play the firsts missions of the A-10 campaign and return here to report :lol:

 

It doesn't matter about the CPU/GPU clock because it isn't using the CPU thread at full.. when you're doing a free roam with low AI units in the map can be wonderful.. but when doing a mission with a lot of AI units the performance fall drastically and at least I expect a better usage of my computer resources.. If DCS only uses one thread of the processor I want that thread working at full and not at 40 % while I'm getting 40 fps and my GPU is touching his balls..

[AtaliaA1]

A better understanding of Program Language is needed here. Especially "Program Executions".

 

No DX9 Program should run any "Modern" CPU at 100% Constant. Chasing your tail.

 

Remove any background programs, turn off your virus software. Run SSD clean up program and it also helps to restart your PC. mostly when you have programs downloading overnight.

[S-GERAT]

A better understanding of Program Language is needed here. Especially "Program Executions".

 

No DX9 Program should run any "Modern" CPU at 100% Constant. Chasing your tail.

 

Remove any background programs, turn off your virus software. Run SSD clean up program and it also helps to restart your PC. mostly when you have programs downloading overnight.

 

Shouldn't because usually they're limited by the GPU, but in this case neither the CPU or GPU are working at full, and we are getting low fps in missions with a lot of IA units ( that's the moment when I expect the CPU working hard ). And I'm running in a newly installed O.S with only drivers and DCS installed..