[mohaa] Server details

Josh Berry josh at chickenmonkey.co.uk
Fri Dec 20 19:22:12 EST 2002 

> For instance, when the number of clients actually on the server is
24 and the maxrate set at 10000, but the bandwidth is only 1.5mbps, what
does the server do? Drop packets? Reduce the max_rate to a lower number?

As far as I understand..

If the max rate is too low then the client machine will try to pull more
information from the server than the server can send. This means that
you will have lag on the server and also, due to the extra load that the
server is under, higher ping times. This will get worse as the number of
clients increases.

On the flip side, if your max rate is too high (a DSL connection will
give itself a max rate of around 30000 if uncapped) the server will not
be able to cope with the amount of data being sent and cause the same
problems.

If the server is trying to transfer more data than it has bandwidth then
it should simply delay sending and receiving data until the bandwidth is
available (but this will cripple the server). Also, running a connection
at 100% is never a good idea as it will saturate when transfer peaks. If
a connection saturates its upstream, for example, then there is no
bandwidth for acks and hence the connection will also lose its
downstream - this will cause clients to disconnect and such.

Personally I have min rate at 4000 and max rate at 12000 for 20 players
but I don't have to worry about the bandwidth (although I did rate limit
it to 2M synchronous to see what happened and it coped no probs).

-- 
Josh
http://www.chickenmonkey.co.uk
 

-----Original Message-----
From: Salsich, Luke [mailto:LJS at protectorgroup.com] 
Sent: 18 December 2002 20:01
To: 'mohaa at icculus.org'
Subject: RE: [mohaa] Server details

Interesting points.....I see how to calculate the max_rate, but would be
curious to see if anyone can outline how this actually effects realtime
server performance. Any detailed guides out there on the Q3 engine
regarding
this issue? 

I definately appreciate the comments about what has worked for various
members (3000 min and 10000 max) - I trust the experience of game
admins.
But it would be nice to understand how the server deals with this at
maximum
clients. For instance, when the number of clients actually on the server
is
24 and the maxrate set at 10000, but the bandwidth is only 1.5mbps, what
does the server do? Drop packets? Reduce the max_rate to a lower number?


p.s. Thanks for the offer to coloc, but I have my own machine and enjoy
having root control ;)

Luke 


-----Original Message-----
From: Anthony Quon [mailto:anthonyquon at hotmail.com]
Sent: Wednesday, December 18, 2002 2:51 PM
To: mohaa at icculus.org
Subject: RE: [mohaa] Server details



ok...from this formula:

Upload speed / ( # of clients * 8 ) = sv_maxrate

u can change it to be sv_maxrate * #clients * 8 = Upload Speed

At least this is what I use since I have alot of bw. I use this just so
I 
know how much bw I'm going to use up. I just plug in say 9000 * 16 * 8
which

equals to 1.152 mbps for this particular server. Then if I have like 10
of 
these that's about 11.52 mbps for 10 servers running. Since these
servers 
are not running at MAX capacity it's oging to be less than 11 mbps -
usually

40% is about right.

For the case of the cable modem example..2100 *16*8 = .268800 mbps is
about 
right...won't be the best gameplay with your max being 2100
though..hence 
the reason why gameservers are not in everyone's home.

BTW call me if you want to coloc your server




>From: "Salsich, Luke" <LJS at protectorgroup.com>
>Reply-To: mohaa at icculus.org
>To: "'mohaa at icculus.org'" <mohaa at icculus.org>
>Subject: RE: [mohaa] Server details
>Date: Wed, 18 Dec 2002 14:34:36 -0500
>
>Also, in the example provided in the guide the max_rate is 2100 for a
16
>player server on a cable modem?!?!?! Is this just an example, or this
>possible? I mean, will setting the max_rate this low allow you to host
that
>many players on a 256Kbps upload line? My experience says no way.
>
>I have a 1.5 duplex line and am hosting a 24 player game.....I like
this
>number of players on the server, but if I were to set the max_rate to
4500,
>could I host 36 players succesfully? Would the pings sky-rocket?
>
>
>
>Luke
>
>-----Original Message-----
>From: André Rivotti Casimiro [mailto:rivotti at netcabo.pt]
>Sent: Wednesday, December 18, 2002 2:26 PM
>To: mohaa at icculus.org
>Subject: RE: [mohaa] Server details
>
>
>For each server? I have 2.2 Mbits of bandwidth and 10 servers of 12 
>players.
>How do I calculate this? For each server or using all players (120) as
if
>was one big server?
>
>Regards
>André
>
>-----Mensagem original-----
>De: Heikki Kokko [mailto:heikki.kokko at tromso.online.no]
>Enviada: quarta-feira, 18 de Dezembro de 2002 19:17
>Para: mohaa at icculus.org
>Assunto: Re: [mohaa] Server details
>
>
>Don't you guys read the guides @ mohadmin.com?
>
>Source: http://www.mohadmin.com --> Guides --> How to set max rate
>------------------------------------------------------
>How to set Max rate
>
>The sv_maxrate determines the amount of bandwidth your server uses for
each
>client. To determine the sv_maxrate, use this formula:
># of clients * sv_maxrate * 8(for 8bits) = upload speed
>
>or
>
>Upload speed / ( # of clients * 8 ) = sv_maxrate
>
>For example, my cable modem downloads at 2mbit/sec. However, it uploads
at
>270kbps/sec. So, if I want to run a server that will host 16 clients I
need
>to set my sv_maxrate to 2100 and my formula will look like this:
>16 * 2100 * 8 = 268kbps
>
>I would then open the console and type in the following command:
>set sv_maxrate "2100"
>
>In the end, you're trying to get the formula to equal your upload
>capabilities. This can be done by altering either the max clients or
the
>sv_maxrate values.
>Follow this formula and your server should run a little better.
>
>Keep in mind that your upload
>speed ( the speed in which you send data back to the internet ) can be
quit
>a
>bit slower then you upload speed ( the speed in which you receive data
from
>the
>internet)
>
>You can use one of many speed test
>site's on the internet.  I would recommend DSLreports.
>Not only can you test your upload
>speed but there are many other test you can run. They even have some
guides
>to
>help you improve your upload and download speeds.
>Check them out at http://www.dslreports.com/stest
>
>Copyright © by MOHadmin.com All Right Reserved.
>Published on: 2002-10-29 (710 reads)
>------------------------------------------------------
>Source: http://www.mohadmin.com --> Guides --> How to set max rate
>
>----- Original Message -----
>From: "Salsich, Luke" <LJS at protectorgroup.com>
>To: <mohaa at icculus.org>
>Sent: Wednesday, December 18, 2002 7:59 PM
>Subject: RE: [mohaa] Server details
>
>
> > I've seen guys who set max_rate to anywhere between 8,000 to 12,000.

>Whats
> > the best for a t1 connection? Does it make that much difference?
> >
> > Luke
> >
> >
> > -----Original Message-----
> > From: Anthony Quon [mailto:anthonyquon at hotmail.com]
> > Sent: Wednesday, December 18, 2002 1:50 PM
> > To: mohaa at icculus.org
> > Subject: RE: [mohaa] Server details
> >
> >
> > Nope it's about 1-1.5 mbps (second) bandwidth usage. I'm pretty sure
on
> > this, however it also depends how busy your servers are...the more 
>people
>on
> >
> > them throughout the day will push more traffic...
> >
> > basically I'm pushing ROUGHLY alittle less than 1T1's bw per server
with
> > max_rate set to around 9000 per server.
> >
> > Anthony
> >
> >
> >
> >
> >
> >
> > >From: "Sander de Hond" <sanderdehond at home.nl>
> > >Reply-To: mohaa at icculus.org
> > >To: <mohaa at icculus.org>
> > >Subject: RE: [mohaa] Server details
> > >Date: Sat, 21 Dec 2002 16:48:42 +0100
> > >
> > >Hi Anthony,
> > >
> > >Thanks again, i got  more question how many server do u run on that
>system
> > >?
> > >And about the 1-1.5 mb/sec i think that isn't correct, it's less
and i
> > >think
> > >it's per minute right ? ;)
> > >
> > >Thanks in advance,
> > >
> > >Sander
> > >
> > >
> > >-----Oorspronkelijk bericht-----
> > >Van: Anthony Quon [mailto:anthonyquon at hotmail.com]
> > >Verzonden: dinsdag 17 december 2002 17:28
> > >Aan: mohaa at icculus.org
> > >Onderwerp: RE: [mohaa] Server details
> > >
> > >
> > >Yes, even if you use your own server, you only really need a few
files
>from
> > >the moh distribution to get things going..and that only takes about
1.5
> > >Gigs
> > >of disk space. You may or may not be able to run a 20 man server on

>your
> > >hardware configurations...I'm not too sure on that. However, each
game
> > >instance takes up to about 100Megs of memory outside of whatever
else 
>the
> > >rest of the system is using.
> > >
> > >As far as bandwidth usage...for a 20 man server moderately
populated,
> > >you're
> > >probably looking at roughly (very rough estimate) 1-1.5mbps
> > >
> > >Anthony
> > >
> > >
> > > >From: "Sander de Hond" <sanderdehond at home.nl>
> > > >Reply-To: mohaa at icculus.org
> > > >To: <mohaa at icculus.org>
> > > >Subject: RE: [mohaa] Server details
> > > >Date: Fri, 20 Dec 2002 17:19:50 +0100
> > > >
> > > >Hi,
> > > >
> > > >Thanks for your responce,
> > > >
> > > >I know wich dirs to install, i've done it before, but we want to
use
>our
> > > >own
> > > >server this time.
> > > >You are talking about servers, so it's more then one ? Our goal
is to
> > >host
> > > >one public (20 slots) and a website.
> > > >
> > > >And how many datatraffic does your server use ? Or can't you
check 
>that
>?
> > > >
> > > >Thanks again,
> > > >
> > > >Sander
> > > >
> > > >-----Oorspronkelijk bericht-----
> > > >Van: Anthony Quon [mailto:anthonyquon at hotmail.com]
> > > >Verzonden: dinsdag 17 december 2002 16:57
> > > >Aan: mohaa at icculus.org
> > > >Onderwerp: Re: [mohaa] Server details
> > > >
> > > >
> > > >You don't need all of the directories in order to get a moh
server
> > >working.
> > > >For one of my moh instances I am using up 1.5G's of space without
any
> > > >mods...of course the size will grow if you are adding mods..but
not 
>by
> > > >much.
> > > >
> > > >As far as min system requirements, I'm not sure on this. I'm
running
>this
> > > >off of a dual athlon mp2000 server with 2G's of ram for my public

>game
> > > >servers.
> > > >
> > > >Anthony
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > >From: "Sander de Hond" <sanderdehond at home.nl>
> > > > >Reply-To: mohaa at icculus.org
> > > > >To: "Mohaa" <mohaa at icculus.org>
> > > > >Subject: [mohaa] Server details
> > > > >Date: Fri, 20 Dec 2002 16:07:20 +0100
> > > > >
> > > > >Hi guys,
> > > > >
> > > > >I have 2 questions :
> > > > >
> > > > >- How many GB's does a public server need/use ? I thought it
was
>around
> > > > >25GB
> > > > >but i'm not sure.
> > > > >
> > > > >- What kinda server do i need to run a proper public server, is
a
> > >celeron
> > > > >766Mhz  512Mb good enough ?
> > > > >
> > > > >Thanks in advance,
> > > > >
> > > > >Sander
> > > >
> > > >
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