Sorry, I misread the original. I just went and took a look at the quake3
config file options here:
I would definitely _not_ try to run quake3 on the same machine in XP and
linux with the same config file. On the same exact hardware, I believe
linux to be considerably faster for most operations. XP has a considerable
amount of more overhead in the os, and especially in the network protocol
You might compare packet loss ratios between the configurations with ping
blasts, or maybe with netcat - XP->linux native pipe, same over cipe, and
linux->linux over both. At some transmission rate you will experience
I would go tweak some of the connection settings on the XP instance based
on the experiences above, compensating for XP's lag. Even a small amount
of difference in the latencies of the stack can cause large amounts of
retransmits. It also seems that when you have the above conditions, AND no
variation in the traffic pattern the problem is greater than expected. You
may find that dumping some traffic with larger average packet sizes on the
cipe network will smooth out the traffic flow.
If it was tcp we would tweak these things in the protocol stack, if its
udp they're tweaked in the application.
On Wed, 10 Dec 2003, Richard Gregory wrote:
Erm yes, that is why the third paragraph of my original message said this:
Some background... Quake does most of its communications using UDP port
27960. The game server sends packets out representing the current state
of the game at a rate of around 25 per second, ~100 bytes each to port
27960. The clients send back packets representing the users actions, at
around the same rate, size and the same UPD port.
As you can see, this isn't TCP at all, it is basic UDP. So why does
XP/Q3 create those extra packets??
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Rob Nelson wrote:
> On Mon, 8 Dec 2003, Richard Gregory wrote:
>>Noticed a problem with Quake 3 network traffic when routed over cipe.
>>Quake 3 sends four times as many UDP packets to the game server as it
>>does when outside the tunnel (or in a ssh/pppd tunnel). This problem
>>only happens when the Quake3 client runs on an XP machine, reboot into
>>Linux and the packet rate becomes one-to-one.
>>This is still the case when the Linux Q3 config file is copied over the
>>Q3 XP config. All in all, suggesting some sort of interaction problem
>>with cipe and XP, but I've no idea what. Does anybody have any
> What protocol is quake running? There are differences in how the tcp/ip
> stack is configured on linux and windows. Knowing whether quake runs udp
> or tcp would help to configure it. Are there any differences in the
> packet trace besides the XP client's extra chatter?
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