On Sun, Mar 04, 2007 at 11:39:18AM -0800, Alan D. wrote: > Months later I fineally realized that I was actually having lag spikes > in other games, the only difference was those games didn't completely > freeze me in place when a lag spike would occur. Using Wireshark I > discovered that what is happening is at some point a packet is lost > and then resent as it should be, but following this there is what I > can only describe as a "TCP DUP ACK" storm, where the same ACK is sent > 10-200 times over a period of several seconds that coincides precisely > with the lag events experienced in games.
What protocol(s) is the game using? UDP? Does Wireshark tell you a packet is dropped right before the dup ack storm? Are the dup acks going in both directions? After this lag event, everything returns to normal? > The following is a list of things I have tried so far to determine the > problem: > > 1) Replaced ethernet cable > 2) Installed a Realtek 8139 NIC & disabled onboard NForce4 NIC > 3) Replaced PIX 501 with a Windows 2000 RRAS server > 4) Connected my PC directly to the modem (other systems in my house > work fine) > 5) Complete reformat and reinstallation of latest drivers for all > hardware > 6) Replaced motherboard with an MSI Neo4 Sounds like the only things left unchanged are the OS and the (cable/DSL) line and/or modem/router. I would try to see if you get these lag spikes while doing other things that transfer a lot of data such as a file upload and a file download. Steve _______________________________________________ Wireshark-users mailing list [email protected] http://www.wireshark.org/mailman/listinfo/wireshark-users
