You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
iperf3 parallel stream performance is much less than iperf2. Why?
33
33
iperf3 is single threaded, and iperf2 is multi-threaded. We
34
34
recommend using iperf2 for parallel streams.
35
35
If you want to use multiple iperf3 streams use the method described `here <https://fasterdata.es.net/performance-testing/network-troubleshooting-tools/iperf/multi-stream-iperf3/>`_.
36
-
36
+
37
37
I’m trying to use iperf3 on Windows, but having trouble. What should I do?
38
38
iperf3 is not officially supported on Windows, but iperf2 is. We
39
39
recommend you use iperf2.
40
40
41
41
Some people are using Cygwin to run iperf3 in Windows, but not all
42
42
options will work. Some community-provided binaries of iperf3 for
43
43
Windows exist.
44
-
44
+
45
45
How can I build a statically-linked executable of iperf3?
46
46
There are a number of reasons for building an iperf3 executable with
47
47
no dependencies on any shared libraries. Unfortunately this isn't
@@ -116,17 +116,17 @@ How can I build on a system that doesn't support profiled executables?
116
116
117
117
And then run ``./bootstrap.sh``, that will regenerate the project
118
118
Makefiles to make the exclusion of the profiled iperf3 executable
119
-
permanant (within that source tree).
119
+
permanent (within that source tree).
120
120
121
121
I'm seeing quite a bit of unexpected UDP loss. Why?
122
122
First, confirm you are using iperf 3.1.5 or higher. There was an
123
123
issue with the default UDP send size that was fixed in
124
124
3.1.5. Second, try adding the flag ``-w2M`` to increase the socket
125
125
buffer sizes. That seems to make a big difference on some hosts.
126
-
126
+
127
127
iperf3 UDP does not seem to work at bandwidths less than 100Kbps. Why?
128
128
You'll need to reduce the default packet length to get UDP rates of less that 100Kbps. Try ``-l100``.
129
-
129
+
130
130
TCP throughput drops to (almost) zero during a test, what's going on?
131
131
A drop in throughput to almost zero, except maybe for the first
132
132
reported interval(s), may be related to problems in NIC TCP Offload,
@@ -184,13 +184,13 @@ What congestion control algorithms are supported?
184
184
On Linux, run this command to see the available congestion control
185
185
algorithms (note that some algorithms are packaged as kernel
186
186
modules, which must be loaded before they can be used)::
0 commit comments