Hi, > > 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 ? And are you able to share your "ifconfig -a" and "netstat -rn" output with me privately ? --Qing > -----Original Message----- > From: owner-freebsd-sta...@freebsd.org [mailto:owner-freebsd- > sta...@freebsd.org] On Behalf Of Steven Hartland > Sent: Tuesday, October 04, 2011 5:00 PM > To: freebsd-stable@freebsd.org > Cc: li...@multiplay.co.uk > Subject: serious packet routing issue causing ntpd high load? > > We just updated a machine to 8-STABLE and I've noticed > that ntpd is using notible amounts of CPU 5-7% which > is very high for such a trivial daemon. > > 8.2-STABLE FreeBSD 8.2-STABLE #16: Tue Oct 4 09:53:17 UTC 2011 > > truss indicates its constantly checking and reading > from a socket > > 0.047297485 select(29,{20 21 22 23 24 25 26 27 28},0x0,0x0,0x0) = 1 > (0x1) > 0.047513160 clock_gettime(0,{1317770389.969538247 }) = 0 (0x0) > 0.047604515 select(29,{20 21 22 23 24 25 26 27 28},0x0,0x0,{0.000000 }) > = 1 (0x1) > 0.047668212 read(28,"\M-8\0\^E\a\0\0\0\0@\0\0\0\^A\0"...,5120) = 184 > (0xb8) > 0.049395293 select(29,{20 21 22 23 24 25 26 27 28},0x0,0x0,0x0) = 1 > (0x1) > 0.049503689 clock_gettime(0,{1317770389.971526820 }) = 0 (0x0) > 0.049606219 select(29,{20 21 22 23 24 25 26 27 28},0x0,0x0,{0.000000 }) > = 1 (0x1) > 0.049669916 read(28,"\M-8\0\^E\a\0\0\0\0@\0\0\0\^A\0"...,5120) = 184 > (0xb8) > 0.049809882 select(29,{20 21 22 23 24 25 26 27 28},0x0,0x0,0x0) = 1 > (0x1) > ... > > running with debug enabled it sits looping outputting:- > routing message op = 7: ignored > routing message op = 7: ignored > routing message op = 7: ignored > routing message op = 7: ignored > routing message op = 7: ignored > routing message op = 7: ignored > routing message op = 7: ignored > ... > > It seems socket 28 is a duplicate of an internal routing socket > as seen here in the trace:- > 0.044544269 socket(PF_ROUTE,SOCK_RAW,0) = 4 (0x4) > 0.044595394 fcntl(4,F_DUPFD,0x14) = 28 (0x1c) > 0.044645960 close(4) = 0 (0x0) > 0.044695968 fcntl(28,F_SETFL,O_NONBLOCK) = 0 (0x0) > > Now this looks like its RTM_MISS as defined:- > sys/net/route.h:#define RTM_MISS 0x7 /* Lookup failed on > this address */ > > So the question was why is PF_ROUTE socket constantly > spamming RTM_MISS? > > route -n monitor on this machines shows:- > got message of size 184 on Tue Oct 4 23:46:36 2011 > 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 > > got message of size 184 on Tue Oct 4 23:46:36 2011 > 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 > > This seems very much like the following pr which was fixed:- > "Remove a bogusly introduced rtalloc_ign() in rev. 1.335/SVN 178029, > generating an RTM_MISS for every IP packet forwarded making user space > routing daemons unhappy":- > http://www.freebsd.org/cgi/query-pr.cgi?pr=124540 > > The box is doing no routing, its fairly basic install with > 1 main IP on em0 + 1 alias + gw addres and 1 private ip on em1. > > Its running mysql and thats about it. > > Any ideas? > > 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 postmas...@multiplay.co.uk. > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable- > unsubscr...@freebsd.org" _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"