settling back to 2-10 % is gtr2 usage while it should be 0% if no users connected to it, so you did have what am having, go to processes tab in task manager and watch the gtr2dedicated.exe while you close and open lfs dedicated.

its not specific to that machine because i also tested it on another win2008 server and its the same.

i even done a setup where i was running lfs inside a vmware virtual machine and gtr2 on the host and was still getting cpu usage whenever i launch lfs inside the VM.

Quote :

Even if I dont think it'll make any difference:
We are using a seperate Windows-Userprofile for each simulation.

i have already tried that didnt make any difference.

i have not tried contacting them yet, the reason is if i start gtr2 and then rfactor or vice versa all seems to be normal, but if i start any of them and then i start lfs cpu starts going up, but there has to be a starting point if i need to get to the bottom of this, and am only checking here first because of those reasons, am not here to criticise and have not made my mind up and posted here to put the blame.

i was thinking of getting around this by running lfs in a virtual machine to seperate the applications but i read reviews that people are experiencing lags in this scenario due to synchronizations issues between VM and host so i kinda left this as a last resort.

if you can please run a small test that would really be appreciated, dont debug at first (or until you see the results of that test) just run gtr2 together with lfs on a win2k pro if no win2k3 server is abailable.

i suspect its an RPC issue, if i was to debug i would monitor the windproc for unexpected messages sent or received because its not networking connections TCP nor UDP, i have monitored those and no connections attempts are being made or packets being sent between the applications.

i just tested it on a fresh installed copy of win2k pro and another xp and its doing that same thing on both of them.

i wasnt asking you to debug gtr2, you could debug lfs and get helpfull answers, but if you are having this attitude i dont think we are going to get anywhere so i'de rather not go into a discussion that is not technical, just one thing though if you havent got win2k3 server and you never tested running lfs with gtr2 or other game servers how can you be so sure to give a definitive answer that lfs has never had a bug that causes an effect on other programs and how can you tell that it can even run with no glitches on win2k3, dont get me wrong am not saying it does have a bug am just saying there is a problem thats only happening when i start lfs thats why i started checking here.

you dont need more than task manager to see cpu usage for each process, it gives accurate information on cpu, memory and others.

no amount of explaining can be more convincing than testing this for yourself, the easiest and quickest way to get to the bottom of this in my opinion is if you can replicate the environment or just part of it is enough, i would think you have a win2k3 server you can test on, just run a couple instances of gtr2 dedicated servers with no users connecting to them and no need to tick the lobby option and then launch an lfs dedicated and watch cpu usage for gtr2 dedicated, on mine it instantly goes up and if i shut down lfs it instantly goes back down to 0%.

LFS dedi is the latest Z3 version, running on default ports starting with 63392.

gtr2 are also running default ports except for udp and those are:
tcp 34747 --> +5
udp 34697 --> +10

rfactor ports:
tcp 34447 --> +10
udp 34397 --> +10
udp 34297 --> +10


i am running insim but no difference with or without same behaviour.
also note that as i said earlier there are no network connection between any of the game servers, i suspect that lfs is locking resources that are needed by others, or probably making api calls or other kind that is making others go mad or think they have to work.

thanks

its not happening on xp or vista anyway, i only seen it on win2003 server.

I do realize that and thats what am asking for assistance with, because as i said cpu usage is 0% and then i launch lfs and cpu usage goes on a constant 100% for all applications, lfs is interacting with them somehow which seems to me like its making them think they have users connected.
is anyone able to replicate the problem on a win2003 server please try and let us know.

Hi, am running rfactor and gtr2 dedicated servers on win2003 server, as soon as i launch the first lfs dedicated even if i run it in a different remote session as a different user the cpu for gtr2 goes up to as much as it can and rfactor goes up to 1%-2% usage each (this behavior for those servers is usually when users connect to them but its happening even with no connections) and that cpu usage becomes constant until i shut down all lfs servers note that lfs cpu usage is null, i cannot see any network connections from lfs to rfactor or gtr2 or vice versa, anyone has an idea why this is happenning or any clue how to sort it.
this is not occasional, i tested it many times and it happens everytime.

thanks