[bf1942] Server Utilization

[Stefan Engbersen]

Same here!
Running 2 bf1942 lnxdeds on a Dual Xeon 2.66Ghz with HT with the kernel:

2.4.22-1.2149.nptlsmp #1 SMP

And see:

29246 engberse  15   0 53104  51M  6488 S    29.9  2.5   0:23   1 
bf1942_lnxded
29007 houben    15   0 53104  51M  6488 S    28.5  2.5   0:35   0 
bf1942_lnxded

Also around the 30%, the servers are idle, not changing map, not 
starting, they also have 0 people playing.
1.6rc2 btw..

Regards,

Stefan Engbersen
impact-gaming.nl


Roland Kool wrote:

>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
>>
>>
>>    
>>
>
>
>
>  
>