Date: Sun, 25 Oct 1998 16:42:32 +0100 (CET) From: Reinier Bezuidenhout <Reinier.Bezuidenhout@KryptoKom.DE> To: freebsd-hackers@FreeBSD.ORG Subject: fxp 10/100 and device timeouts Message-ID: <199810251542.QAA06431@borg.kryptokom.de>
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Hi ... I am doing some througput tests and I'm running into some problems with the Intel ether express 10/100B cards. I am using ttcp with udp packets and using different packet sizes. The connections are 100MB full-duplex connections with x-over cables. The setup is as follows. PII400(fxp) ------ PII400(2x fxp) ------- PII300(fxp) I am using the PII400 in the middle as a bridge (drawbridge code) and it's running 2.2.7-STABLE ... the version of the fxp driver is 1.21.2.14 ... The following seems to happen .... When transmitting data from both sides through the machine in the middle and using packet sizes less than 256 bytes, I start to get device timeout messages. When doing the same transmit from only the one side ... there is no problems. Sometimes I get up to 4 device timeouts when transferring 32MB of data with these small packets. The error occurs on both the fxp devices (fxp0 and fxp1). I also tried to use a 2.2.6-RELEASE installation, but the same thing happens. Any ideas ? Thanx Reinier To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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