Date: Tue, 11 Oct 2011 21:28:06 +0000 From: "Li, Qing" <qing.li@bluecoat.com> To: Steven Hartland <killing@multiplay.co.uk>, "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org> Cc: "liv3d@multiplay.co.uk" <liv3d@multiplay.co.uk> Subject: RE: serious packet routing issue causing ntpd high load? Message-ID: <B143A8975061C446AD5E29742C531723146773@PWSVL-EXCMBX-01.internal.cacheflow.com> In-Reply-To: <040F9FF759DA441392432EDBD5C4D2CF@multiplay.co.uk> References: <2740DA0E7C0F495BA00E6D4BC0FE8F37@multiplay.co.uk> <B143A8975061C446AD5E29742C53172313BC17@PWSVL-EXCMBX-01.internal.cacheflow.com> <040F9FF759DA441392432EDBD5C4D2CF@multiplay.co.uk>
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Okay, I just reproduced the problem. The strange thing is the routing message appears to be endless, but if I exit "route monitor" and restart it, the message disappears. That indicates to me it is not the kernel that is generating the routing message continuously, but maybe it is a socket buffer issue ? Otherwise when "route monitor" is resumed the messages should also resume, which is not the case here. Of course why the DNS message being generated in FIB <1> triggers a RTM_MISS in FIB <2> is an issue and I am looking into it as well. --Qing > -----Original Message----- > From: Steven Hartland [mailto:killing@multiplay.co.uk] > Sent: Monday, October 10, 2011 2:51 AM > To: Li, Qing; freebsd-stable@freebsd.org > Cc: liv3d@multiplay.co.uk > Subject: Re: serious packet routing issue causing ntpd high load? > > ----- Original Message ----- > From: "Li, Qing" <qing.li@bluecoat.com> > > >> RTM_MISS: Lookup failed on this address: len 184, pid: 0, seq 0, > errno > >> 0, flags:<DONE> > >> locks: inits: > >> sockaddrs: <DST> > >> ::A.B.C.D > >> > > > > Would it be possible for you to email me what exactly does > "::A.B.C.D" > > map into WRT your system or infrastructure ? > > Sorry for the slow reply been out of the country. > > All the hosts are local machines same /24 connecting to the server for > mysql. It seems to be that every packet either to or from for the mysql > server is generating an RTM_MISS. > > > And are you able to share your "ifconfig -a" and "netstat -rn" output > > with me privately ? > > On its way. > > Regards > Steve > > ================================================ > This e.mail is private and confidential between Multiplay (UK) Ltd. and > the person or entity to whom it is addressed. In the event of > misdirection, the recipient is prohibited from using, copying, printing > or otherwise disseminating it or any information contained in it. > > In the event of misdirection, illegible or incomplete transmission > please telephone +44 845 868 1337 > or return the E.mail to postmaster@multiplay.co.uk.
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