[bf1942] Server Utilization

[Roland Kool]

List,

"glad" to see I'm not the only one. I can report that 1.6rc2 doesn't fix
it for me.
I also had no problem with the 1.5 patch (and as I recall any previous
version). My CPU utilization stats look similar to the ones from Casey. 
Hyperthreading doesn't seem to make a difference. Machines with HT
enabled or disabled show the same behaviour.
I hope a solution can be found as I agree to previous posters that this
is a pretty serious problem. I'm happy to work with you and test various
things which may produce a solution. 
Just to be sure: the high utilization is visible in TOP. When you look
at the statusmonitor, the reported CPU is really low, like 1-4%.

Regards,

Roland Kool
thegamezone.nl

> 
> I have this problem too, but I didn't have it with 1.5.
> 
> You can see here:
> 
> http://bfb.bogleg.org/stats/stats.cgi?c=cpu&s=bfb-bf1
> 
> On the 1-week graph, you can see I upgraded the server late 
> Friday night.  The CPU usage (for empty server) went from 
> <10% to 20-25%.
> 
> The *only* change I made was the bf1942 server upgrade from 
> 1.5 to 1.6rc1.
> 
> Andreas Fredriksson wrote (at Mon, Feb 02, 2004 at 04:20:54PM +0100):
> > 
> > I've been trying to fix this bug since the first 1.4 release but 
> > always come up empty handed. Profiling tells me that the time isn't 
> > spent inside the BF server itself but in syscalls. It might 
> have to do 
> > with FPU exceptions or something equally obscure.
> > 
> > In all honesty I wouldn't know how to produce a quick fix for this 
> > bug.
> > 
> > // Andreas
> > 
> > > -----Original Message-----
> > > From: Paul Richards [mailto:noxis at clara.net]
> > > Sent: Monday, February 02, 2004 4:03 PM
> > > To: bf1942 at icculus.org
> > > Subject: Re: [bf1942] Server Utilization
> > > 
> > > 
> > > Andreas,
> > > 
> > > Any idea on this SMP problem? As I am pretty sure the
> > > previous version didnt have this, I am running Gentoo with a 
> > > SMP kernel and i just started up 1.6 for the first time, 
> > > empty server and its idling at 20 - 39%. Is it going to be a 
> > > possiblity to try to quickly patch this ?
> > > 
> > > This is almost un-usable, all my unix/linux machines are SMP
> > > boxes does the CPU usuage scale when players join? or does it 
> > > sit the same? If thats true then its no biggy and almost a 
> > > help or does this mean that a full 24 player is going to be 
> > > using like 90% cpu? If so this is a big step back in the 
> > > linux server port :/
> > > 
> > > Cheers
> > > 
> > > Paul
> > > 
> > > ----- Original Message -----
> > > From: "Andreas Fredriksson" <andreas.fredriksson at dice.se>
> > > To: <bf1942 at icculus.org>
> > > Sent: Monday, February 02, 2004 1:38 PM
> > > Subject: RE: [bf1942] Server Utilization
> > > 
> > > 
> > > >
> > > > I can't say why some servers are showing this behaviour,
> > > but it seems
> > > > to depend on your kernel configuration. Last summer I received 
> > > > help
> > > > from a community member and we tested many 
> configurations and found 
> > > > the culprit to be SMP kernels causing a massive CPU overhead.
> > > >
> > > > The same machine running a non-SMP kernel would not have
> > > the high-idle
> > > > problem.
> > > >
> > > > The carrier problem should be fixed in 1.6 since we have
> > > reverted the
> > > > carrier collision meshes back to the 1.31 versions which
> > > didn't have
> > > > the problem.
> > > >
> > > > // Andreas
> > > >
> > > > > -----Original Message-----
> > > > > From: Roland Kool [mailto:roland at cyso.nl]
> > > > > Sent: Monday, February 02, 2004 1:39 PM
> > > > > To: bf1942 at icculus.org
> > > > > Subject: [bf1942] Server Utilization
> > > > >
> > > > >
> > > > > Hello,
> > > > >
> > > > > Got some questions about CPU utilization behaviour I
> > > noticed since I
> > > > > installed the 1.6 patch on Linux. I've checked the forums @
> > > > > lightcubed but didn't see any threads about it yet.
> > > > >
> > > > > All idle servers (servers with no players) use between 15
> > > and 20% of
> > > > > CPU. Before 1.6 is was between 0 and 5%. That's the CPU
> > > util you see
> > > > > when starting 'top'. Caused by PB perhaps?
> > > > >
> > > > > If you use screen -r to resume your servers screen, I
> > > don't get all
> > > > > server console output. I have to press the enter and it
> > > looks like
> > > > > the CPU util reported there is around 100% which drops
> > > quickly back
> > > > > to 2-5%.
> > > > >
> > > > > Does 1.6 finally fix the collision meshes causing high
> > > util on maps
> > > > > with boats/carriers?
> > > > >
> > > > > Best regards,
> > > > >
> > > > > Roland Kool
> > > > > Thegamezone.nl
> > > > >
> > > >
> > > 
> > 
> 
> -- 
> -- Casey Zacek (Zippo)                   Beer for Breakfast servers
>    66.111.111.66:14567 (BF1942) <http://bfb.bogleg.org/> Dallas, TX
> 
>