Date: Sat, 14 May 2011 02:08:58 +0200 From: Bartosz Woronicz <bartosz.woronicz@korbank.pl> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: freebsd-stable@freebsd.org Subject: Re: Unstable ARP responses times Message-ID: <4DCDC81A.3020603@korbank.pl> In-Reply-To: <20110513181005.GA36587@icarus.home.lan> References: <4DCD2881.4020402@korbank.pl> <20110513181005.GA36587@icarus.home.lan>
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W dniu 13.05.2011 20:10, Jeremy Chadwick pisze: > On Fri, May 13, 2011 at 02:48:01PM +0200, Bartosz Woronicz wrote: >> Since I moved from 7.3-stable to 8.2-stable I go strange long >> responses of arp, with arping. >> I.e. >> root@Korbotron82|pts/3|13:35:35|/home/mastier # arping -i vlan92 >> 79.110.194.140 >> ARPING 79.110.194.140 >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=0 time=1.579 msec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=1 time=653.326 msec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=2 time=7.153 usec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=3 time=6.199 usec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=4 time=6.199 usec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=5 time=5.960 usec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=6 time=7.153 usec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=7 time=5.960 usec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=8 time=6.199 usec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=9 time=280.132 msec >> 60 bytes from 00:15:17:a2:ea:38 (79.110.194.140): index=10 >> time=120.429 msec >> ^C >> --- 79.110.194.140 statistics --- >> 18 packets transmitted, 11 packets received, 39% unanswered (0 extra) >> root@Korbotron82|pts/3|13:36:06|/home/mastier # ping 79.110.194.140 >> PING 79.110.194.140 (79.110.194.140): 56 data bytes >> 64 bytes from 79.110.194.140: icmp_seq=0 ttl=64 time=0.348 ms >> 64 bytes from 79.110.194.140: icmp_seq=1 ttl=64 time=0.204 ms >> 64 bytes from 79.110.194.140: icmp_seq=2 ttl=64 time=0.171 ms >> 64 bytes from 79.110.194.140: icmp_seq=3 ttl=64 time=0.223 ms >> 64 bytes from 79.110.194.140: icmp_seq=4 ttl=64 time=0.283 ms >> 64 bytes from 79.110.194.140: icmp_seq=5 ttl=64 time=0.322 ms >> 64 bytes from 79.110.194.140: icmp_seq=6 ttl=64 time=0.250 ms >> ^C >> --- 79.110.194.140 ping statistics --- >> 7 packets transmitted, 7 packets received, 0.0% packet loss >> round-trip min/avg/max/stddev = 0.171/0.257/0.348/0.059 ms >> >> Any Idea what does mean ? > Can you try turning off flowtable to see if that makes any difference? > This is a sysctl and can be adjusted in real-time. > > net.inet.flowtable.enable=0 > > Thanks. > It is already turned off # sysctl net.inet.flowtable.enable net.inet.flowtable.enable: 0 Also trurning it on doesn't make much difference # sysctl net.inet.flowtable.enable=1 net.inet.flowtable.enable: 0 -> 1 # arping -i vlan50 10.6.56.160 ARPING 10.6.56.160 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=0 time=2.147 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=1 time=174.050 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=2 time=221.634 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=3 time=283.422 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=4 time=525.137 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=5 time=663.274 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=6 time=213.200 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=7 time=660.249 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=8 time=589.227 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=9 time=378.279 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=10 time=624.204 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=11 time=158.019 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=12 time=6.169 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=13 time=4.587 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=14 time=2.722 msec 60 bytes from 00:08:a1:9b:47:af (10.6.56.160): index=15 time=82.936 msec -- Pozdrawiam, Bartosz Woronicz, System Adminstrator, Korbank S.A. ul. Nabycińska 19 53-677 Wrocław NIP: 894-26-41-602 tel. 071-723-43-23 fax. 071-723-43-29
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