Date: Mon, 30 Nov 2009 00:21:16 +0100 From: =?iso-8859-1?Q?Eirik_=D8verby?= <ltning@anduin.net> To: Robert Watson <rwatson@FreeBSD.org> Cc: pyunyh@gmail.com, weldon@excelsusphoto.com, freebsd-current@freebsd.org, Gavin Atkinson <gavin@freebsd.org> Subject: Re: FreeBSD 8.0 - network stack crashes? Message-ID: <E9B13DDC-1B51-4EFD-95D2-544238BDF3A4@anduin.net> In-Reply-To: <alpine.BSF.2.00.0911291427240.80654@fledge.watson.org> References: <A1648B95-F36D-459D-BBC4-FFCA63FC1E4C@anduin.net> <20091129013026.GA1355@michelle.cdnetworks.com> <74BFE523-4BB3-4748-98BA-71FBD9829CD5@anduin.net> <alpine.BSF.2.00.0911291427240.80654@fledge.watson.org>
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On 29. nov. 2009, at 15.29, Robert Watson wrote: > On Sun, 29 Nov 2009, Eirik =D8verby wrote: >=20 >> I just did that (-rxcsum -txcsum -tso), but the numbers still keep = rising. I'll wait and see if it goes down again, then reboot with those = values to see how it behaves. But right away it doesn't look too good .. >=20 > It would be interesting to know if any of the counters in the output = of netstat -s grow linearly with the allocation count in netstat -m. = Often times leaks are associated with edge cases in the stack (typically = because if they are in common cases the bug is detected really quickly!) = -- usually error handling, where in some error case the unwinding fails = to free an mbuf that it should free. These are notoriously hard to = track down, unfortunately, but the stats output (especially where delta = alloc is linear to delta stat) may inform the situation some more. =46rom what I can tell, all that goes up with mbuf usage is = traffic/packet counts. I can't say I see anything fishy in there. =46rom the last few samples in http://anduin.net/~ltning/netstat.log you can see the host stops receiving any packets, but does a few = retransmits before the session where this script ran timed out. /Eirik
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