[mohaa] Getting Complanes About High Ping, Is Config Ok?

[Simon Hough]

I also had alot of complaints about Pings on my T1 box, weird,
I think its the Telco though more than anything, I have two T1`s
running into the box, depending on where you are comming from
depends on what you use, I am using a bandwidth shaper also.

I found that if I set my max rate to 5000 I get 16 people running
fine.

Si
----- Original Message -----
From: "Eric Koldeweij" <eric at no-sense.net>
To: <mohaa at icculus.org>
Sent: Friday, August 02, 2002 6:44 PM
Subject: Re: [mohaa] Getting Complanes About High Ping, Is Config Ok?


> Sounds to me like you're hitting a limit, not a cfg problem.
> I see from your config that you run on a full T1, is that right? I
> assume it is so :)
>
> A T1 is a full-duplex 2Mbit/sec connection, with rounds down to about
> 200Kbyte/sec both up and down. Seeing that you have your clientrate set
> to 9000 bytes/sec it means that you can host (rounded down) 200 / 9 = 22
> users max. That is, if your box does not generate any other traffic. If
> you are above that number, pings WILL skyrocket...
> You should check if there are other bandwidth-guzzlers active (like
> other game servers, web servers can use a lot of bandwidth too if there
> are many requests, and a popular ftp server is a real killer)
>
> Assuming that you have bandwidth enough the only other limits (I can
> think of) you can hit is memory/CPU power. The MOHAA server really is a
> memory eater, and 256Mb minimum for a linux box without X running is
> really no luxury - 128Mb is too little.
> Also a 600+ Mhz processor is advisable.
>
> Easiest check is to do "uptime". it'll give you 3 load averages. If
> they're all permanently above 1, your box is too busy.
>
> To figure out what the bottleneck is, most linux boxes come with handy
> tools. If you suspect bandwidth is the problem but you have no idea
> what's causing it, run (as root) "netstat -tuap". That'll give you a
> list of all TCP and UDP services currently running at your box. Check
> the second and third column of the output (the receive and send queue
> resp.). If many entries have large numbers there you have a definite
> bandwidth problem.
>
> Also, run "top". That'll give you a lot of information about your
> system. If your box is using a lot of swap space you have a shortage of
> memory. If the used swap space is close to the max, you're in trouble -
> add memory as soon as possible or you'll risk processes crashing due to
> out-of-memory conditions. Also, check the CPU state(s). They should be
> idle for a considerable percentage. If permanently busy, your problem is
> CPU power.
>
> First action I'd suggest is to lower the sv_maxRate to 7000 or even
> 6000. Almost no client will notice a performance loss, and you will be
> able to serve more clients (28 and 33 resp. assuming no other traffic)
>
> If there's a lot of traffic from time to time (like ftp transfers) you
> might consider installing the traffic shaper - this will allow you to
> limit the bandwidth for network connections. See the docs for a full
> explanation.
>
> Last but not least (not very likely tho) is that (one of) your uplink(s)
> is at capacity... In that case you should experience packet loss, which
> you can check with ping.
>
> Good luck!
>
> Eric.
>
> Roger Lund wrote:
>
> >hi, i am running my server on t1 and peeps keep complaning so i thought
> >maybe it was my config. I am trying to run 20 - 32 people. soon as i get
> >over 10 people i get pings over 150.
> >
> >
> >// Start Of Config
> >
> >sv_hostname "bob's Server"
> >
> >//Sets the NAME of your server, what people will see in the browser
> >
> >fraglimit 0
> >
> >//Sets the limit of Frags that will end the match
> >//( 0 = no fraglimit)
> >
> >timelimit 20
> >//Sets the amount of time (in minutes) for map changes
> >//(0 = no timelimit)
> >
> >//This is the list of maps that will be cycled for the server
> >
> >sv_maplist "obj/obj_team2 obj/obj_team4 obj/obj_team1"
> >
> >
> >//sv_maplist "dm/mohdm1 dm/mohdm2 dm/mohdm3 dm/mohdm4 dm/mohdm6
dm/mohdm7"
> >
> >
> >
> >
> >set g_drawsvlag 0
> >
> >sv_allowDownload 0
> >
> >//Toggles allowing client downloads from server, like custom maps
> >
> >//(0-off 1-on)
> >
> >set sv_precache 0
> >
> >//sv_padPackets 1
> >
> >//set g_smoothClients 0
> >
> >sv_maxRate 9000
> >
> >//Max data transmit rate by clients on the server.
> >
> >//(setting depends on network)
> >
> >sv_maxPing 200
> >
> >//Keeps anyone with a higher ping than this value from connecting
> >
> >//to the server
> >
> >sv_fps 15
> >
> >//Server FPS, this should increase performance (20 is the default)
> >sv_floodProtect 1
> >
> >sets Connection "FuLL T1"
> >
> >//Flood protection from server crashing text messages
> >
> >//set flood_waitdelay 10
> >
> >//not too sure on this, possibly time before flooder is allowed
> >
> >//to type again (default)
> >
> >//set flood_persecond 4
> >
> >//messages per second to be considered a flood ?? (default)
> >
> >//set flood_msgs 4
> >
> >// ?? (default)
> >
> >//sv_pure 0
> >
> >//Pak checker, does not allow clients to use PAK files the server
> >//doesn?t have (0=off 1=on)
> >
> >sv_gamespy 1
> >
> >//Allows your server to show up in the Gamespy browser, and the
> >
> >ui_gamespy "1"
> >
> >//In-game browser (v1.1)
> >
> >set g_inactiveKick 0
> >
> >//Time (in seconds) that a client will be kicked for inactivity
> >
> >set g_inactiveSpectate 60
> >
> >//Time (in seconds) that a client will be moved to spectator for
> >
> >//inactivity
> >
> >set g_teamdamage 0
> >
> >//Sets friendly fire 0=off 1=on
> >
> >com_maxfps 60
> >
> >net_noipx 1
> >
> >//Disallows IPX connections, TCP only (network protocol)
> >
> >net_port 12203
> >
> >//Sets the port # for the game to run off of (12203 is the default)
> >
> >set sv_privateClients 2
> >
> >//private slots on the server
> >
> >set privatePassword ****
> >
> >//password for private slots
> >
> >
> >rconPassword ****
> >
> >//Sets your RCON password to allow you Remote Administration
> >
> >// end of the config and remember a blank line at
> >
> >
> >__________________________________________________
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> >
>
>