[LARTC] QOS and gameserver lags

[LARTC] QOS and gameserver lags

[Tom Verbeek]

Dear list,

I have experimented some time now with HTB queues, and have received
a lot of help from this list, especially from Stef. Thank you.

My currect Shaper looks like this:
http://www.designobjekt.de/test/rc.trafficshaper

Unfortunately I still experience lags of this type:

-players from the internet playing on my server feel lags
-I feel lags when I play on a different server on the internet

How can I find out what are the real reasons for lagging packet
transport? Maybe its CPU performance of my router, maybe its the
bandwidth, maybe its my provider...

Any ideas on this will be greatly appreciated!

Thanks,
Tom.


-- 
Word Perfect isn't, Excel doesn't, Works won't.

_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Re: [LARTC] QOS and gameserver lags

[Stef Coene]

On Monday 25 August 2003 12:42, Tom Verbeek wrote:
> Dear list,
>
> I have experimented some time now with HTB queues, and have received
> a lot of help from this list, especially from Stef. Thank you.
>
> My currect Shaper looks like this:
> http://www.designobjekt.de/test/rc.trafficshaper
>
> Unfortunately I still experience lags of this type:
>
> -players from the internet playing on my server feel lags
> -I feel lags when I play on a different server on the internet
>
> How can I find out what are the real reasons for lagging packet
> transport? Maybe its CPU performance of my router, maybe its the
> bandwidth, maybe its my provider...
>
> Any ideas on this will be greatly appreciated!
Can you check the bandwidth used in the different classes?  I have a script on 
www.docum.org that can do this for you.  I ask this because you have 
different prio's and you have to be sure you never overlimit a class (send 
more then the rate) or the latency can go up.

You also have to check the quantum values.  For the 10 kbit class, quantum = 
10kbit / 8 (bit -> byte) / 10 (r2q) = 12.5 byte and this < mtu = 1500 byte.  
So add quantum 1500 if you create that class.

You can also try to add a fifo qdisc to the classes and not a sfq qdisc.  
Especially for the 2:0 qdisc.

Stef

-- 

stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
     #lartc @ irc.oftc.net

_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/