Date: Tue, 1 Feb 2005 13:28:27 +0000 From: Chris <chrcoluk@gmail.com> To: freebsd4@fadesa.es Cc: freebsd-stable@freebsd.org Subject: Re: 50% of packets lost only on local interfaces Message-ID: <3aaaa3a0502010528760c3a11@mail.gmail.com> In-Reply-To: <41FE7524.7E907BE@fadesa.es> References: <41FE7524.7E907BE@fadesa.es>
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Have tested on 3 boxes. 5.3-STABLE compiled Jan 5th --- 127.0.0.1 ping statistics --- 61 packets transmitted, 61 packets received, 0% packet loss round-trip min/avg/max/stddev =3D 0.062/0.073/0.146/0.013 ms 5.3-STABLE amd64 build compiled Jan 29th --- 127.0.0.1 ping statistics --- 60 packets transmitted, 60 packets received, 0% packet loss round-trip min/avg/max/stddev =3D 0.024/0.030/0.048/0.005 ms 5.3-Release-P5 --- 127.0.0.1 ping statistics --- 60 packets transmitted, 60 packets received, 0% packet loss round-trip min/avg/max/stddev =3D 0.057/0.089/0.167/0.017 ms On Mon, 31 Jan 2005 19:12:52 +0100, Jos=E9 M. Fandi=F1o <freebsd4@fadesa.es= > wrote: > Hello, >=20 > It sounds weird but tcp/ip traffic directed to _local_ interfaces, > and only _local_ interfaces, always cause 50% of packets lost. Of > course there isn't packet filters activated. >=20 > I'm running -stable (the last update was this past weekend) >=20 > There is another report like this: > http://www.FreeBSD.org/cgi/query-pr.cgi?pr=3Dkern/72022 > but the suggested solution doesn't works in my case. >=20 > ping to local interfaces get replies for 50% of the packets: >=20 > > ping -c 512 127.0.0.1 > [snip] > --- 127.0.0.1 ping statistics --- > 512 packets transmitted, 257 packets received, 49% packet loss > round-trip min/avg/max/stddev =3D 0.046/0.049/0.077/0.004 ms >=20 > > ping -c 512 10.20.30.2 > [snip] > --- 10.20.30.2 ping statistics --- > 512 packets transmitted, 254 packets received, 50% packet loss > round-trip min/avg/max/stddev =3D 0.017/0.049/0.071/0.004 ms >=20 > Also running tcpdump on localhost shows as the kernel stop from > responding to packets without an apparent motive. >=20 > > tcpdump -n -i lo0 > tcpdump: verbose output suppressed, use -v or -vv for full protocol decod= e > listening on lo0, link-type NULL (BSD loopback), capture size 96 bytes > [snip] > 17:58:15.516451 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo request seq 76 > 17:58:15.516476 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo reply seq 76 > 17:58:16.517321 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo request seq 77 > 17:58:16.517347 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo reply seq 77 > 17:58:17.518158 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo request seq 78 > 17:58:18.519042 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo request seq 79 > 17:58:19.519853 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo request seq 80 > 17:58:20.520698 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo request seq 81 > 17:58:21.521548 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo request seq 82 > 17:58:22.522392 IP 127.0.0.1 > 127.0.0.1: icmp 64: echo request seq 83 >=20 > more tests, to the lan router: >=20 > > ping -c 500 10.20.30.6 > [snip] > --- 10.20.30.6 ping statistics --- > 500 packets transmitted, 500 packets received, 0% packet loss > round-trip min/avg/max/stddev =3D 1.565/2.015/40.189/2.385 ms >=20 > from the lan router: >=20 > Router#ping > Protocol [ip]: > Target IP address: 10.20.30.2 > Repeat count [5]: 500 > Datagram size [100]: > Timeout in seconds [2]: > Extended commands [n]: > Sweep range of sizes [n]: > Type escape sequence to abort. > Sending 500, 100-byte ICMP Echos to 10.20.30.2, timeout is 2 seconds: > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!! > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!! > !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! > !!!!!!!!!! > Success rate is 99 percent (498/500), round-trip min/avg/max =3D 1/2/12 m= s >=20 > I don't find any explanation for this, but I'd like to know if there is > any solution? >=20 > Thank you. >=20 > I put the whole test (dmesg, make.conf, etc)in this URL so you can see > all numbers. > http://195.55.55.164/tests/FreeBSD/report.txt >=20 > -- > -----BEGIN GEEK CODE BLOCK----- > Version: 3.1 > GCS/IT d- s+:+() a- C+++ UBL+++$ P+ L+++ E--- W++ N+ o++ K- w--- > O+ M+ V- PS+ PE+ Y++ PGP+>+++ t+ 5 X+$ R- tv-- b+++ DI D++>+++ > G++ e- h+(++) !r !z > ------END GEEK CODE BLOCK------ > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >
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