[bf1942] Server Utilization

[Casey Zacek]

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