Or you could think of this as self tuning. From everything I can gather it seems "normal".
Scott On 8/4/05, Chris Buechler <[EMAIL PROTECTED]> wrote: > On 8/1/05, Scott Ullrich <[EMAIL PROTECTED]> wrote: > > > > > [kernel: tl0: tx underrun -- increasing tx threshold to 512 bytes] > > > [kernel: tl0: tx underrun -- increasing tx threshold to 768 bytes] > > > [kernel: tl0: tx underrun -- increasing tx threshold to 1024 bytes] > > > [kernel: xl0: transmission error: 90] > > > [kernel: xl0: tx underrun, increasing tx start threshold to 120 bytes] > > > > I get these as well. Its something since the interface changes in > > FreeBSD behind the scenes. This is on my list of things to ping the > > FreeBSD lists with closer to final 6 release if it persists. It > > doesn't seem to harm anything, however. > > > > these underruns are normal on many NIC drivers, since 5.x IIRC, maybe > 4.x did it too, I don't recall for sure. The tx threshold starts low, > and as traffic increases, the threshold is increased if need be. The > transmission errors are caused by the tx underruns. It's perfectly > normal, and will happen after every reboot. > > dug that info up on google quite a while ago. found this explanation > with a quick search today. > > -- > The NIC starts transmitting a packet before the whole packet has been > copied to the NIC's memory. If it takes too long for the rest of the > packet to get onto the NIC, a bit won't be there when its time for > transmission comes. This is called an underrun. The driver then > raises the threshold for how much of the packet has to be on the NIC > before transmission starts. > -- > > -cmb > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
