Bug#759225: Iperf client version 2.0.5-3 prints unrealistic bandwidth results
Roberto, thanks! I already obtained the iperf3 from github to my CentOS installation, but I would like to test out the Debian package as well. Please provide me the download link for testing it out. This ticket can be resolved. regards, Martin From: roberto.lumbre...@gmail.com [roberto.lumbre...@gmail.com] On Behalf Of Roberto Lumbreras [ro...@debian.org] Sent: Monday, August 25, 2014 5:28 PM To: Martin Tõnusoo; 759...@bugs.debian.org Subject: Re: Bug#759225: Iperf client version 2.0.5-3 prints unrealistic bandwidth results On Mon, Aug 25, 2014 at 2:52 PM, Martin Tõnusoo mailto:martin.tonu...@linxtelecom.com>> wrote: Package: iperf Version: 2.0.5-3 Sometimes Iperf client reports unrealistic bandwidth results: Yes, with UDP client statistics sometimes are really broken. Please check server statistics and I think it may be ok. This bug has been there for a long time and upstream is not very active, so it's unlikely to be fixed. FYI, iperf has been rewritten from scratch, it's called iperf3, and the Debian package is currently in Incoming. I can send you a link to download the binaries if you are interested in testing it. Regards, -- Roberto Lumbreras Debian developer -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
Bug#759225: Iperf client version 2.0.5-3 prints unrealistic bandwidth results
On Mon, Aug 25, 2014 at 2:52 PM, Martin Tõnusoo < martin.tonu...@linxtelecom.com> wrote: > Package: iperf > Version: 2.0.5-3 > > Sometimes Iperf client reports unrealistic bandwidth results: > Yes, with UDP client statistics sometimes are really broken. Please check server statistics and I think it may be ok. This bug has been there for a long time and upstream is not very active, so it's unlikely to be fixed. FYI, iperf has been rewritten from scratch, it's called iperf3, and the Debian package is currently in Incoming. I can send you a link to download the binaries if you are interested in testing it. Regards, -- Roberto Lumbreras Debian developer
Bug#759225: Iperf client version 2.0.5-3 prints unrealistic bandwidth results
Package: iperf Version: 2.0.5-3 Sometimes Iperf client reports unrealistic bandwidth results: root@debian-linx:~# iperf -c 217.28.252.17 -fm -t 600 -i60 -u -b 500m Client connecting to 217.28.252.17, UDP port 5001 Sending 1470 byte datagrams UDP buffer size: 0.16 MByte (default) [ 3] local 192.168.1.2 port 43385 connected with 217.28.252.17 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-60.0 sec 422744 MBytes 59104 Mbits/sec [ 3] 60.0-120.0 sec 435030 MBytes 60822 Mbits/sec [ 3] 120.0-180.0 sec 402263 MBytes 56240 Mbits/sec [ 3] 180.0-240.0 sec 398167 MBytes 55668 Mbits/sec [ 3] 240.0-300.0 sec 422746 MBytes 59104 Mbits/sec [ 3] 300.0-360.0 sec 381786 MBytes 53378 Mbits/sec [ 3] 360.0-420.0 sec 402263 MBytes 56240 Mbits/sec [ 3] 420.0-480.0 sec 406365 MBytes 56814 Mbits/sec [ 3] 480.0-540.0 sec 439132 MBytes 61395 Mbits/sec [ 3] 0.0-600.0 sec 4108674 MBytes 57443 Mbits/sec [ 3] Sent 6119890 datagrams read failed: No route to host [ 3] WARNING: did not receive ack of last datagram after 3 tries. root@debian-linx:~# root@debian-linx:~# iperf -c iperf.scottlinux.com -fm -t 600 -i60 -u -b 500m Client connecting to iperf.scottlinux.com, UDP port 5001 Sending 1470 byte datagrams UDP buffer size: 0.16 MByte (default) [ 3] local 192.168.1.2 port 52092 connected with 173.230.156.66 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-60.0 sec 862 MBytes 120 Mbits/sec [ 3] 60.0-120.0 sec 861 MBytes 120 Mbits/sec [ 3] 120.0-180.0 sec 856 MBytes 120 Mbits/sec [ 3] 180.0-240.0 sec 874 MBytes 122 Mbits/sec [ 3] 240.0-300.0 sec 871 MBytes 122 Mbits/sec [ 3] 300.0-360.0 sec 54119 MBytes 7566 Mbits/sec [ 3] 360.0-420.0 sec 879 MBytes 123 Mbits/sec [ 3] 420.0-480.0 sec 879 MBytes 123 Mbits/sec [ 3] 480.0-540.0 sec 878 MBytes 123 Mbits/sec [ 3] 540.0-600.0 sec 880 MBytes 123 Mbits/sec [ 3] 0.0-600.0 sec 61959 MBytes 866 Mbits/sec [ 3] Sent 6213531 datagrams [ 3] Server Report: [ 3] 0.0-264.8 sec 3808 MBytes 121 Mbits/sec 0.044 ms3496865/6213530 (56%) [ 3] 0.0-264.8 sec 570 datagrams received out-of-order root@debian-linx:~# Under which conditions such behavior can occur? I would expect egress bandwidth never to be higher than target bandwidth set with "-b" flag. I am using Debian GNU/Linux 7 as a guest-OS in VMware virtual-machine(1GigE vNIC, e1000 driver), kernel 3.2.0-4-686-pae, libc6:i386 version 2.13-38+deb7u3, libgcc1:i386 version 1:4.7.2-5 and libstdc++6:i386 version 4.7.2-5. Please let me know in case additional information is needed! thanks, Martin -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
