Date: Tue, 30 Mar 2010 17:57:45 +0200 From: Attila Nagy <bra@fsn.hu> To: Jonathan Feally <vulture@netvulture.com> Cc: pyunyh@gmail.com, Mailing List FreeBSD Stable <freebsd-stable@freebsd.org>, Michael Loftis <mloftis@wgops.com> Subject: Re: 8-STABLE freezes on UDP traffic (DNS), 7.x doesn't Message-ID: <4BB21F79.5060807@fsn.hu> In-Reply-To: <4BB21EA7.4080107@netvulture.com> References: <4BAB718C.3090001@fsn.hu> <886B21E1787F0003B89E34B6@[192.168.1.44]> <4BB087B7.3030602@fsn.hu> <20100329183848.GE1473@michelle.cdnetworks.com> <4BB0FDC6.7050105@fsn.hu> <20100329194131.GG1473@michelle.cdnetworks.com> <4BB1CFD1.9040602@fsn.hu> <4BB21EA7.4080107@netvulture.com>
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Jonathan Feally wrote: > Attila Nagy wrote: >>>>>> Bingo, this solved the problem. The current uptime nears four days. >>>>>> Previously I couldn't go further than a day. >>>>>> >>>>>> The machine gets very light TCP load (and other machines which >>>>>> get work >>>>>> well), so I guess it's UDP RX or TX checksum related >>>>>> > I also have had my network go dead on a recent 8.0-STABLE on bge > system. Console is alive, but network just stops. I am running it as a > router with untagged on bge0 and nat of traffic on vlan201 tagged on > top of bge1. I haven't had it lock up in 3 days, but I will try the > -txcsum and -rxcsum on both interfaces to see if the problem still > persists or not. I do have a lot of tcp traffic, but there is also > unsolicited udp flying in as well. Well, it's a short time to judge from, but with rx,txcsum disabled, the machine froze nearly instantly (less than one hour of uptime), while with tso disabled, it still works. So for now I think tso causes the problems. BTW, now that we are talking about that, I remember that I've disabled it on a lot of machines previously, because I've had strange issues.
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