The Mana World Forums

I just noticed something interesting about CPU usage.

Windows XP, 0.0.26:

Intel Core2Duo E6600 @ 2,4GHz:

60fps -> 50% (100% one core)
30fps -> 5% (10% one core)

OpenGL enabled
Ambient FX high
Particle detail high

(Settings out of the box, except for the 30fps limit for the test.)

Tested in Tulimshar, near the Soul Menhir.

Intel Core2Duo E6600 @ 2,4GHz:

60fps -> 20% (40% one core)
30fps -> 10% (20% one core)

OpenGL disabled
Ambient FX high
Particle detail high

(Settings out of the box, except for the 30fps limit for the test and OpenGL disabled.)

Tested in Tulimshar, near the Soul Menhir.

Could people post in this thread:

1) What CPU you have
2) What kind of cpu usage you get with a) 60fps limit b) 30fps limit
3) Scenario in which tested

Thank you for your feedback in advance.

P.S. This is starting to look fishy. Enabling OpenGL seems to use more CPU. With OpenGL disabled, it's giving me the kind of results I was expecting.

P.P.S. If you're going to say something about the login screen CPU usage: http://mantis.themanaworld.org/view.php?id=9

AMD Athlon X2 64 6000+ (3.0 Ghz Dual Core)

30fps -> 30%
40fps -> 58%
60fps -> 69%
140fps -> 88%

Tested in Hurnscald near the Soul Menhir, max particle quality, high ambient fx, OpenGL turned off.

EDIT: Data with OpenGL Enabled, same location, same particle qualities:

30fps - 30;
40fps - 60;
60fps - 91;
140 - hovers around 100fps with 93%

---Freeyorp

Windows Vista 64bit
0.0.27
Intel Core 2 Duo E6850 @3.6Ghz

OpenGL Enabled
Ambient & Particle Maxed
In Hurnscald next to Soul Stone

Fps CPU Usage(Avg)
30 -> 11% (Core 1 9% -- Core2 13%)
60 -> 29% (C1 11% -- C2 46%)
300 -> 70% (C1 49% -- C2 100%)

OpenGL Disabled
Ambient % Particle Maxed
In Hurnscald next to Soul Stone

Fps CPU Usage(Avg)
30 -> 8% (C1 4% -- C2 5%)
60 -> 17% (C1 17% -- C2 18%)
300 -> 50% (C1 70% -- C2 40%)

In theory OpenGL mode should require less CPU because it should do graphic calculations on the GPU instead of the CPU.

Crush wrote:In theory OpenGL mode should require less CPU because it should do graphic calculations on the GPU instead of the CPU.

We use immediate mode, which is considered worse than not using hardware acceleration at all by some people

Perhaps we should look into updating to using OpenGL 2.0.

--
trapdoor

With OpenGL enabled, many more effects are used. That is likely offsetting the performance gain.

As far as I know there are no major graphic effects which are disabled in software mode. The most demanding ones, overlays and particles, do not care about software or OpenGL mode.

Rotonen wrote:I just noticed something interesting about CPU usage.

Windows XP, 0.0.26:

Intel Core2Duo E6600 @ 2,4GHz:

60fps -> 50% (100% one core)
30fps -> 5% (10% one core)

OpenGL enabled
Ambient FX high
Particle detail high

(Settings out of the box, except for the 30fps limit for the test.)

Tested in Tulimshar, near the Soul Menhir.

Intel Core2Duo E6600 @ 2,4GHz:

60fps -> 20% (40% one core)
30fps -> 10% (20% one core)

OpenGL disabled
Ambient FX high
Particle detail high

(Settings out of the box, except for the 30fps limit for the test and OpenGL disabled.)

Tested in Tulimshar, near the Soul Menhir.

Could people post in this thread:

1) What CPU you have
2) What kind of cpu usage you get with a) 60fps limit b) 30fps limit
3) Scenario in which tested

Thank you for your feedback in advance.

P.S. This is starting to look fishy. Enabling OpenGL seems to use more CPU. With OpenGL disabled, it's giving me the kind of results I was expecting.

P.P.S. If you're going to say something about the login screen CPU usage: http://mantis.themanaworld.org/view.php?id=9

you want in linux OS or only for windows users?

Performance should be platform independent, so I'm assuming all platforms here.

I should probably have mentioned my results were using Ubuntu Linux Intrepid (8.10) 64bit

---Freeyorp

ubuntu 8.10 intrepid 0.026

AMD mobile sempron 3000+ 1.8ghz 1 core 32bit
ATI radeon xpress 200m

60 fps: 90%
30 fps: 90%

opengl enabled
ambient fx:high
particle detail:max

the 2 tests was in tulimshar near the soul menhir

60 fps:100%
30 fps:70%
opengl disabled
ambient fx:high
particle detail:max


peace

freebsd 7.1 using 0.0.27 from ports

Pentium 4 3ghz
intel 950

these were taken whilst at soul menhir at hurnscold with plenty of people around.

70% at 60fps limit
35% at 30fps limit

opengl disabled
ambient fx was high
partical detail was high

100% at 60 fps limit
85% at 30 fps limit

opengl enabled
ambient fx was high
partical detail was high

--
trapdoor