Date: Sun, 31 Oct 2010 17:46:57 -0400 (EDT) From: Rick Macklem <rmacklem@uoguelph.ca> To: freebsd-current@freebsd.org Subject: re(4) driver dropping packets when reading NFS files Message-ID: <1060261000.280090.1288561617454.JavaMail.root@erie.cs.uoguelph.ca>
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I recently purchased a laptop that has a re(4) Realtek 8101E/8102E/8103E net chip in it and I find that it is dropping packets like crazy when reading files over an NFS mount. (It seems that bursts of receive traffic cause it, since when I look over wireshark, typically the 2nd packet in a read reply is not received, although it was sent at the other end.) Adding "options DEVICE_POLLING" helps a lot. (ie. order of magnitude faster reading) Does this hint that interrupts are being lost or delayed too much? Anyhow, if anyone has an idea on what the cause/fix might be or are familiar with the driver/hardware, I'd appreciate hearing about it. Thanks, rick ps: This laptop is running a low end AMD cpu and I did install amd64 on it, instead of i386, in case that might be relevent?
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