19 lines
747 B
Diff
19 lines
747 B
Diff
diff --git a/src/iperf3.1 b/src/iperf3.1
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index 05483a9..35a0873 100644
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--- a/src/iperf3.1
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+++ b/src/iperf3.1
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@@ -329,6 +329,13 @@ If the client is run with \fB--json\fR, the server output is included
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in a JSON object; otherwise it is appended at the bottom of the
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human-readable output.
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.TP
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+.BR --udp-counters-64bit
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+Use 64-bit counters in UDP test packets.
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+The use of this option can help prevent counter overflows during long
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+or high-bitrate UDP tests. Both client and server need to be running
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+at least version 3.1 for this option to work. It may become the
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+default behavior at some point in the future.
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+.TP
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.BR --username " \fIusername\fR"
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username to use for authentication to the iperf server (if built with
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OpenSSL support).
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