A multiple-thread based Linux network throughput benchmark tool.
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Multiple threads to send/receive data. By default, Receiver ("-r") uses 16 threads and Sender ("-s") uses 64 threads to exchange data.
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Support cpu affinity.
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Support running in background (daemon).
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Support Sender and Receiver sync mode by default. Use "-N" (no_sync) to disable the sync.
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Only support TCP mode; and support both ipv4 and ipv6.
make; make install
ntttcp -h
- UDP is not supported.
To measure the network performance between two multi-core serves running SLES 12, NODE1 (192.168.4.1) and NODE2 (192.168.4.2), connected via a 40 GigE connection.
On NODE1 (the receiver), run:
./ntttcp -r
(Translation: Run ntttcp as a receiver with default setting. The default setting includes: with 16 threads created and run across all CPUs, allocating 64K receiver buffer, and run for 60 seconds.)
And on NODE2 (the sender), run:
./ntttcp.exe -s192.168.4.1
(Translation: Run ntttcp as a sender, with default setting. The default setting includes: with 64 threads created and run across all CPUs, allocating 128KB sender buffer, and run for 60 seconds.)
Using the above parameters, the program returns results on both the sender and receiver nodes, correlating network communication to CPU utilization.
Example receiver-side output from a given run (which showcases 37.66 Gbps throughput):
NODE1:/home/simonxiao/ntttcp-for-linux/src # ./ntttcp -r
NTTTCP for Linux 1.1.0
---------------------------------------------------------
13:44:25 INFO: Network activity progressing...
13:45:25 INFO: Thread Time(s) Throughput
13:45:25 INFO: ====== ======= ==========
13:45:25 INFO: 0 60.00 1.83Gbps
13:45:25 INFO: 1 60.00 2.51Gbps
13:45:25 INFO: 2 60.00 2.54Gbps
13:45:25 INFO: 3 60.00 1.94Gbps
13:45:25 INFO: 4 60.00 1.93Gbps
13:45:25 INFO: 5 60.00 2.09Gbps
13:45:25 INFO: 6 60.00 2.15Gbps
13:45:25 INFO: 7 60.00 3.23Gbps
13:45:25 INFO: 8 60.00 1.77Gbps
13:45:25 INFO: 9 60.00 3.30Gbps
13:45:25 INFO: 10 60.00 2.97Gbps
13:45:25 INFO: 11 60.00 3.65Gbps
13:45:25 INFO: 12 60.00 1.67Gbps
13:45:25 INFO: 13 60.00 1.86Gbps
13:45:25 INFO: 14 60.00 1.61Gbps
13:45:25 INFO: 15 60.00 2.61Gbps
---------------------------------------------------------
13:45:25 INFO: test duration :60.00 seconds
13:45:25 INFO: total bytes :282418471264
13:45:25 INFO: throughput :37.66Gbps
13:45:25 INFO: total cpu time :166.11%
13:45:25 INFO: user time :39.89%
13:45:25 INFO: system time :126.23%
13:45:25 INFO: cpu cycles :192000045567
13:45:25 INFO: cycles/byte :0.68
---------------------------------------------------------
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