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Heavy Cpu Bottleneck On 24 Core Machine


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#1 gondorff

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Posted 23 January 2014 - 04:49 PM

Hey there,
I'm having serious issues with a Dual Socket Xeon E5-2620 setup. I am CPU-Bottlenecked almost all the time

That are 16 physical cores, 24 if you counting hyperthreading, running at 2 Ghz. Ingame, I am dropping constantly to 25 FPS, if I am getting direct hits, means seeing the laser/missile/projectile, including cockpit shake, the framerate is dropping below 16 FPS, making it unplayable. If I am getting hit, it is almost like as being removed from the game.

Thing is, if I am running a random map on testing grounds, the framerate will jump up to ~90 FPS - and will stay there.
In other words, what exactly is happening in multiplayer to get that one cpu down the drain? I'm saying one CPU on purpose here, because, as I watched the CPU usage history while playing, I saw that the load is averaging on all cores on about only 4%. Multiply that with 24 and you will get 96 Percent load, almost exactly one fully used Core out of 24. The Cryengine cannot be that bad on multicore, or can it?

Has anyone an idea in regards to modifying the .ini or something else to reduce the load on the CPU? Or maybe any other idea?

System Specs:
2x Xeon E5-2620
GTX 660Ti
32 GB Ram


[EDIT:] I just saw this buried in the depths of the forum: http://www.dslreport...e-of-Multi-Core
??? Huh? How that is going to fit into the picture? Was the engine rewritten from the core for MWO? [/EDIT]

Edited by gondorff, 23 January 2014 - 05:06 PM.


#2 Cyberiad

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Posted 23 January 2014 - 05:53 PM

Have you tried disabling core parking?

http://forum.cakewal...F-m1861804.aspx

#3 Durant Carlyle

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Posted 23 January 2014 - 09:51 PM

Having four cores is important. Having more than four doesn't really help at all. Instead, raw clock speed is necessary.

You have 12 slow-azz cores. Even the top Turbo speed is only 2.5 GHz -- and that only affects a small number of the cores. A non-overclocked quad-core i5-2500/i5-3570/i5-4670 would blow the doors off your machine in MW:O.

I've actually tested my i7-4770 with Hyper-Threading on and off. There was no difference in performance.

Normally, I'd suggest overclocking. Unfortunately, most Xeon boards aren't equipped for it -- they are made to be rock-solid stable, not overclocking-friendly.

Edited by Durant Carlyle, 23 January 2014 - 09:53 PM.


#4 Goose

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Posted 23 January 2014 - 10:54 PM

I'm sorry, but "2GHz" won't please Teh All-Consuming Physics Thread, and I don't seen Teh Devs getting it split up anytime soon. The other 11 threads of the game do seem to shack up nicely on a quad core, but in your case the "2GHz" thing strongly suggests you'll need at lest 6 total …

#5 Imperius

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Posted 24 January 2014 - 12:15 AM

I have sort if the same issue I have two quad core xeons at 2.8ghz. Hence why I'm upgrading to this around the end of this year once Nvidia gets out the 800 series or Titan 2.

Current Comp is from 2008 MAC PRO
2x 2.8intel Xeon quad-core (8cores)
10GB FBDDR2
Nvidia GTX 680 2GB Mac-Edition
OS X Mavericks Bootcamp Windows 8.1 Professional.

Average 30-70 FPS big big fights can drop below 30fps but not that much. Still time to upgrade ;)

Edited by Imperius, 24 January 2014 - 12:21 AM.


#6 gondorff

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Posted 24 January 2014 - 04:21 AM

View PostSiliconLife, on 23 January 2014 - 05:53 PM, said:

Have you tried disabling core parking?

Hey SiliconLife, no I didn't! I am trying that out as soon as I am getting home. Thank you. Will posting results.

View PostDurant Carlyle, on 23 January 2014 - 09:51 PM, said:

You have 12 slow-azz cores.  Even the top Turbo speed is only 2.5 GHz -- and that only affects a small number of the cores.  A non-overclocked quad-core i5-2500/i5-3570/i5-4670 would blow the doors off your machine in MW:O.</p>

Yeah, I know :-/ Unfortunately, you do not have much of a choice if you are using a certain kind of software. I need every core for offline-rendering. In that regard, with a state if the art renderer, all threads will get used by 100%. The decrease in rendering time is almost linear (like 95%) with the available number of cores. At the time I bought the thing, all consumer CPUs were too slow, and even now, it is a tough match. The alternative to a i7-4770, which is ~3,5 GHz in the Xeon range with a comparable count of cores is a  E5-2687WV2, and even that hell of a beast is running only at 3,4 GHz, but costing 1.800 EUR or 2.500 USD per CPU. 8-o

Edited by gondorff, 24 January 2014 - 04:22 AM.






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