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.

[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.

[NightTwix]

dont confuse Hyperthreading with multi core CPUs

i read about problems with Hyperthreading before. HT is just an emulation of multiple CPUs.
Its more a marketing gag than something useful, so i suggest to disable it in the BIOS.

Real multi-core CPUs work fine afaik.

[Boger]

Originally Posted by NightTwix

Real multi-core CPUs work fine afaik.

No they dont with RO
Thats mainly the cause of my crashes lately...

[Prometheus]

Originally Posted by NightTwix

Real multi-core CPUs work fine afaik.

No they don't Twix ;-). In this case the problem is not HT, but multiprocessing in general AFAIK.

@Myxir: I know that this isn't true and I haven't written the mentioned Thread ;-)

[Myxir]

Originally Posted by Prometheus

No they don't Twix ;-). In this case the problem is not HT, but multiprocessing in general AFAIK.

@Myxir: I know that this isn't true and I haven't written the mentioned Thread ;-)

I only wanted to mention it I'll do that in the gamigo Forum, too.