Date: Thu, 23 Sep 1999 14:03:30 -0500 From: "Alejandro Ramirez" <ales@megared.net.mx> To: "Carl Petersen" <petersen@aspi.net>, "Francis A. Vidal" <francis@usls.edu> Cc: "FreeBSD Questions" <freebsd-questions@FreeBSD.ORG> Subject: RE: xl0 transmission error: 90 Message-ID: <010001bf05f6$53948800$fba3f9cf@megared.net.mx> References: <Pine.LNX.4.10.9909231008290.4421-100000@atlas.usls.edu> <37EA59E6.49B3F44B@aspi.net>
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Hi, Same here with xl0, but I have seen my new tx threshold been set to 360 bytes, it goes from 90 to 120 to 180 up to 360, and it stops in there. How do I change the threshold default in the driver???. Should I put 360 bytes default??? How bad its this for my system??? BTW My system its a Compaq Proliat 800 PPro 200 2 Nics 1 tl0 (built in 10mbps) and the other xl0(100mbps full-duplex). Thanks Ales > "Francis A. Vidal" wrote: > > > > hi all, > > > > i get these messages from xl0 from time to time: > > > > xl0: transmission error: 90 > > xl0: tx underrun, increasing tx start threshold to 120 bytes > > > > what could be causing it? the NIC is a 3Com 3C905B-TP 10/100 auto-sensing > > card attached to one of the 10/100 port of a 3Com SuperStack II Switch > > 1100. > > > > Tx under runs occur when the tx state machine cannot get packet > data from memory fast enough to keep up with wire transmit > rate. Setting the start threshold higher increases the number > of bytes which are buffered in the tx fifo which increases the > allowable bus latency. > > I suspect that some adapter in your machine is holding the bus > for longer than it should. > > If the system runs fine after the new tx threshold has been set, see > if you can change the threshold default in the driver and the errors > should go away. > > --Carl Petersen > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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