Crashes on Hyperthreading / Multicore and 100% CPU usage

[Prometheus]

It seems that RO runs more unstable on systems with more than one logical CPU (if you have Hyperthreading, a Multi-Core CPU or multiple CPUs). I know that from at least 4 different people.

Restricting RO to one logical CPU seems to help a lot in this case. Any ideas?

Also the in-game CPU monitor (when you press ALT + I) shows always >90% even if run on multiple CPUs. It seems that RO is running some tight loop on one thread and only does monitor this thread. Maybe this is related to the problem described above?

Even more weird, if I onfocus RO in windowed mode (e.g. I switch to the task manager), it stops consuming 100% power of the one logical CPU and my laptop fan slows down at the same time.

Why does RO use a whole CPU when focused??? Is it a input related problem?

Let aside power consumption, doesn't it also slow down the whole game?

P.S: You might also have noticed this thread in the German community:

http://regnum-forum.gamigo.de/showthread.php?t=1365

Edit: My system is a Toshiba Tecra A9 with a 2,2 GHZ Intel Core 2 Duo CPU.

[Myxir]

Originally Posted by Prometheus

Even more weird, if I onfocus RO in windowed mode (e.g. I switch to the task manager), it stops consuming 100% power of the one logical CPU and my laptop fan slows down at the same time.

Hey, I have the same problem with my Dual Core. Usually I play in full screen mode. But if I hit alt+enter to get windowed mode, it only uses around 30% of my cpu. If I get back to full screen the game uses around 70% again but it runs only at ~15 FPS, usually it should be something like 50-70.
With my Single Core CPU I did not experience that.
But to the german thread:

Da manche Ihr Hyperthreading oder einen 2.ten Prozessor nicht dauerhaft abschalten möchten, habe ich ein Programm gefunden, mit dem man Regnum dazu bringen kann, nur auf einem Prozessor zu arbeiten.

Sorry, but in my oppinion this is crap. Regnum does NOT use the second core. It only uses one. This annoys me very much because of saving energy... Both cores are running at 100% speed but they could run at ~50% if Regnum would use both cores.
One core runs at ~70-90% load and the other has just something about 2-10%.
But I mostly never suffer crashes because of this. I often relog to get my FPS back.
In my opinion this looks like a kind of memory leak.

[octopus]

Originally Posted by Myxir

Sorry, but in my oppinion this is crap. Regnum does NOT use the second core. It only uses one. This annoys me very much because of saving energy... Both cores are running at 100% speed but they could run at ~50% if Regnum would use both cores.
One core runs at ~70-90% load and the other has just something about 2-10%.

If you are running Windows, that second CPU is there to run your viruses and spyware. If your second CPU is only running at 2-10%, just wait until you get a few more viruses, pop-ups and other malware, then your second CPU will be fully utilized.

On a more serious note, we have 5 computers that can all run Regnum. Four of them are single-core AMD systems, and on those Regnum has always been stable. On the fifth machine, an Intel dual-core system (and the fastest system we have), Regnum crashes every 5 minutes or so. I haven't tried turning off hyper-threading on it yet, but I've heard that can help. All five run Ubuntu, and all with Nvidia video cards.

[theotherhiveking]

Regnum only uses 1 core, it was designed to use only 1 core.

making it use 2 cores would really damage performance in single core procesors.


When the game is not focused it takes less resources, this is intentionan.

[Prometheus]

Originally Posted by theotherhiveking

Regnum only uses 1 core, it was designed to use only 1 core.

making it use 2 cores would really damage performance in single core procesors.


When the game is not focused it takes less resources, this is intentionan.

Where do you have this information from?

A well written multi-threading application will run optimally on a single and a multi-core system. I'm pretty much sure that this is true as I wrote such applications myself already

[theotherhiveking]

Originally Posted by Prometheus

Where do you have this information from?

A well written multi-threading application will run optimally on a single and a multi-core system. I'm pretty much sure that this is true as I wrote such applications myself already

I took the information from killeak and surak.

[cs42]

Originally Posted by Prometheus

Also the in-game CPU monitor (when you press ALT + I) shows always >90% even if run on multiple CPUs. It seems that RO is running some tight loop on one thread and only does monitor this thread. Maybe this is related to the problem described above?

It uses 100% on *one* core/CPU because RO unfortunately doesn't use more than on core (yet). This doesn't necessarily mean, that the cpu is runing on fullspeed though, because with modern cpus the speed will be adjusted automatically (and sometimes I see the speed dropping even with ro running).

On the other hand there's no reason ro *should not* use all the processing power available...

[Boger]

Originally Posted by Prometheus

It seems that RO runs more unstable on systems with more than one logical CPU (if you have Hyperthreading, a Multi-Core CPU or multiple CPUs). I know that from at least 4 different people.

Restricting RO to one logical CPU seems to help a lot in this case. Any ideas?

Also the in-game CPU monitor (when you press ALT + I) shows always >90% even if run on multiple CPUs. It seems that RO is running some tight loop on one thread and only does monitor this thread. Maybe this is related to the problem described above?

Even more weird, if I onfocus RO in windowed mode (e.g. I switch to the task manager), it stops consuming 100% power of the one logical CPU and my laptop fan slows down at the same time.

Why does RO use a whole CPU when focused??? Is it a input related problem?

Let aside power consumption, doesn't it also slow down the whole game?

P.S: You might also have noticed this thread in the German community:

http://regnum-forum.gamigo.de/showthread.php?t=1365

Edit: My system is a Toshiba Tecra A9 with a 2,2 GHZ Intel Core 2 Duo CPU.

I suffer lately many crashes too... and I have a dualcore too, updating the DC Optimizers and other stuff didnt help this time.
And ofc only RO got this stuff, other games/apps work golden

[Stefan1200]

My clanmate got many crashes too. He has Hyperthreading.
The thread related to my clanmates problem:
http://www.regnumonline.com.ar/forum...ad.php?t=15085

[Boger]

well, how does the crash look like?
Its just a simple Error message without any freeze? or maybe a graphics corrutpion with a freeze and then error? some more details.