** Description changed: - Issue with showing the round trip time in ping, it seems that for some reason the - roundtrip time is not visible when the packet size is smaller than 16 bytes, still - there should be all space needed to keep the time information in the packet. + Issue with showing the round trip time in ping, it seems that for some + reason the roundtrip time is not visible when the packet size is smaller + than 16 bytes, still there should be all space needed to keep the time + information in the packet. Accordingt to the man page (ubuntu); - "If the data space is at least eight bytes large, ping uses the first eight bytes - of this space to include a timestamp which it uses in the computation of round trip - times. If less than eight bytes of pad are specified, no round trip times are given." + "If the data space is at least eight bytes large, ping uses the first + eight bytes of this space to include a timestamp which it uses in the + computation of round trip times. If less than eight bytes of pad are + specified, no round trip times are given." - Below ping with 12 bytes packet size and 16 bytes packet size, with 12 bytes there - is no roundtrip time printed out, but with the 16 bytes packet there is. + Below ping with 12 bytes packet size and 16 bytes packet size, with 12 + bytes there is no roundtrip time printed out, but with the 16 bytes + packet there is. # ping 137.58.205.245 -s 12 PING 137.58.205.245 (137.58.205.245) 12(40) bytes of data. 20 bytes from 137.58.205.245: icmp_req=1 ttl=64 20 bytes from 137.58.205.245: icmp_req=2 ttl=64 ^C --- 137.58.205.245 ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 3996ms # ping 137.58.205.245 -s 16 PING 137.58.205.245 (137.58.205.245) 16(44) bytes of data. 24 bytes from 137.58.205.245: icmp_req=1 ttl=64 time=0.139 ms 24 bytes from 137.58.205.245: icmp_req=2 ttl=64 time=0.120 ms ^C --- 137.58.205.245 ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 3996ms rtt min/avg/max/mdev = 0.119/0.123/0.139/0.012 ms root@uetest:~# System and Ping information # ping -V ping utility, iputils-sss20101006 # uname -a Linux uetest 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:39:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux # lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04 LTS Release: 12.04 Codename: precise # When checking the data with wireshark 12 Byte PING : Internet Control Message Protocol - Type: 0 (Echo (ping) reply) - Code: 0 - Checksum: 0xcc5a [correct] - Identifier (BE): 5504 (0x1580) - Identifier (LE): 32789 (0x8015) - Sequence number (BE): 1 (0x0001) - Sequence number (LE): 256 (0x0100) - [Response To: 1035] - [Response Time: 0,131 ms] - Data (12 bytes) + Type: 0 (Echo (ping) reply) + Code: 0 + Checksum: 0xcc5a [correct] + Identifier (BE): 5504 (0x1580) + Identifier (LE): 32789 (0x8015) + Sequence number (BE): 1 (0x0001) + Sequence number (LE): 256 (0x0100) + [Response To: 1035] + [Response Time: 0,131 ms] + Data (12 bytes) 0000 00 01 02 03 04 05 06 07 08 09 0a 0b ............ - Data: 000102030405060708090a0b - [Length: 12] + Data: 000102030405060708090a0b + [Length: 12] 16 Byte PING : Internet Control Message Protocol - Type: 0 (Echo (ping) reply) - Code: 0 - Checksum: 0x3bd6 [correct] - Identifier (BE): 5506 (0x1582) - Identifier (LE): 33301 (0x8215) - Sequence number (BE): 1 (0x0001) - Sequence number (LE): 256 (0x0100) - [Response To: 2266] - [Response Time: 0,112 ms] - Data (16 bytes) + Type: 0 (Echo (ping) reply) + Code: 0 + Checksum: 0x3bd6 [correct] + Identifier (BE): 5506 (0x1582) + Identifier (LE): 33301 (0x8215) + Sequence number (BE): 1 (0x0001) + Sequence number (LE): 256 (0x0100) + [Response To: 2266] + [Response Time: 0,112 ms] + Data (16 bytes) 0000 83 2c bf 4f 00 00 00 00 6a 2a 02 00 00 00 00 00 .,.O....j*...... - Data: 832cbf4f000000006a2a020000000000 - [Length: 16] + Data: 832cbf4f000000006a2a020000000000 + [Length: 16] - As can be seen here is, that the roundtrip time exists in both cases, but for some reason the PING - application in Ubuntu will not show it. + As can be seen here is, that the roundtrip time exists in both cases, + but for some reason the PING application in Ubuntu will not show it. - To compare with OpenSUSE distribution with an different version of ping, here we can see that the ping - version is newer, as well that we get roundtrip time when the packet size is 12 and 8 bytes, with 6 bytes - we have no roundtrip time anymore. + To compare with OpenSUSE distribution with an different version of ping, + here we can see that the ping version is newer, as well that we get + roundtrip time when the packet size is 12 and 8 bytes, with 6 bytes we + have no roundtrip time anymore. $ ping www.ubuntu.com -s 12 PING www.ubuntu.com (91.189.90.41) 12(40) bytes of data. 20 bytes from jujube.canonical.com (91.189.90.41): icmp_seq=1 ttl=38 time=38.8 ms 20 bytes from jujube.canonical.com (91.189.90.41): icmp_seq=2 ttl=38 time=36.8 ms ^C --- www.ubuntu.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 36.821/37.837/38.853/1.016 ms $ ping www.ubuntu.com -s 8 PING www.ubuntu.com (91.189.90.41) 8(36) bytes of data. 16 bytes from jujube.canonical.com (91.189.90.41): icmp_seq=1 ttl=38 time=35.7 ms 16 bytes from jujube.canonical.com (91.189.90.41): icmp_seq=2 ttl=38 time=36.3 ms ^C --- www.ubuntu.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 35.772/36.046/36.320/0.274 ms $ ping www.ubuntu.com -s 6 PING www.ubuntu.com (91.189.90.41) 6(34) bytes of data. 14 bytes from jujube.canonical.com (91.189.90.41): icmp_seq=1 ttl=38 14 bytes from jujube.canonical.com (91.189.90.41): icmp_seq=2 ttl=38 ^C --- www.ubuntu.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1001ms $ ping -V ping utility, iputils-ss021109 $ uname -a Linux ws7041 2.6.32.29-0.3-pae #1 SMP 2011-02-25 13:36:59 +0100 i686 i686 i386 GNU/Linux $ lsb_release -a LSB Version: core-2.0-noarch:core-3.2-noarch:core-4.0-noarch:core-2.0-ia32:core-3.2-ia32:core-4.0-ia32:desktop-4.0-ia32:desktop-4.0-noarch:graphics-2.0-ia32:graphics-2.0-noarch:graphics-3.2-ia32:graphics-3.2-noarch:graphics-4.0-ia32:graphics-4.0-noarch Distributor ID: SUSE LINUX Description: SUSE Linux Enterprise Desktop 11 (i586) Release: 11 Codename: n/a $
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1004350 Title: Ping does not show roundtrip time To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iputils/+bug/1004350/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
