Hello Bruce/Team, A gentle reminder on below mail. Thank you.
Best regards Michael. Sent from my iPhone > On 14 Sep 2018, at 4:04 PM, Michael Frimpong <michaelfrimpon...@gmail.com> > wrote: > > Hello Bruce, > > Just as your requested, I am using IPerf 3.1 as seen in the attached > version details for both server and Client. Also when I try testing my > bandwidth on a 1Gbps NIC, I am getting 0's at the server side and > client side stuck at connecting to host as seen in the attached too. > > > c:\>iperf3 -v > iperf 3.1.3 > CYGWIN_NT-6.3-WOW SERVER2-NMSII 2.5.1(0.297/5/3) 2016-04-21 22:12 i686 > Optional features available: None > > > > > c:\>iperf3 -s > ----------------------------------------------------------- > Server listening on 5201 > ----------------------------------------------------------- > Accepted connection from 41.242.112.193, port 50758 > [ 5] local 41.242.112.174 port 5201 connected to 41.242.112.193 port 49476 > [ ID] Interval Transfer Bandwidth Jitter Lost/Total > Datag > rams > [ 5] 0.00-1.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 1.00-2.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 2.00-3.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 3.00-4.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 4.00-5.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 6.00-7.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 7.00-8.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 8.00-9.00 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > [ 5] 9.00-9.98 sec 0.00 Bytes 0.00 bits/sec 0.000 ms 0/0 (0%) > - - - - - - - - - - - - - - - - - - - - - - - - - > [ ID] Interval Transfer Bandwidth Jitter Lost/Total > Datag > > > > CLIENT SIDE > > c:\>iperf3 -v > iperf 3.1.3 > CYGWIN_NT-6.1-WOW Ibrahim-PC 2.5.1(0.297/5/3) 2016-04-21 22:12 i686 > Optional features available: None > > > > c:\>iperf3 -u -c 41.242.112.177 -b900M -w128k -t15 > Connecting to host 41.242.112.177, port 5201 > - - - - - - - - - - - - - - - - - - - - - - - - - > [ ID] Interval Transfer Bandwidth Jitter Lost/Total > Datag > rams > > > > Will really appreciate your kind feedback. Thank you. > > > > -----Original Message----- > From: Bruce A. Mah [mailto:b...@es.net] > Sent: Monday, August 20, 2018 3:26 PM > To: Michael Frimpong <michaelfrimpon...@gmail.com> > Subject: Re: IPERF NOT PROVIDING THE REQUIRED BANDWIDTHIf memory > serves me right, Michael Frimpong wrote: > >> Trust you are doing great. Please I am trying to do the test and the >> results for UDP are Ok but at the server side the bandwidth cannot go >> above 500Mbps. >> >> >> >> Most of the datagrams are dropped as seen below and was wondering why >> that is so? Can you help me on why most of the drops happen. > > Hi Michael-- > > Sorry for the delay...multi-tasking between multiple projects here. > > I am guessing a little bit here because there are some pieces of information > I still don't have regarding your setup...but here we goi anyway... > > One common problem people run into with UDP tests is that they might need to > increase the maximum buffer size, particularly on the receiver side. You > can change this with the -w command-line flag, for example -w128k sets the > buffer to 128KB. > > What happens if you run at lower bitrates (less than 1GB?)? > > I think to get any further with this I'll need a few more bits of > information. Specifically; > > 1. The output of "iperf3 -v" on both the client and server sides, so I know > exactly what versions you're running and what operating systems you are > have. > > 2. The complete output from a short test, on both the client and server > sides. Maybe 5 seconds (-t5)? It looks like this problem would show up > with a much shorter test than what you are doing. > > Bruce. > > PS. As I'm looking through your email again, I'm not sure if you're on > iperf2 or iperf3. This distinction is very important because (despite the > similarity in names) they are totally separate problems. I know a fair > amount about iperf3 but less about iperf2, and so I may not be able to help > you further. _______________________________________________ Iperf-users mailing list Iperf-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/iperf-users
