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58 lines
2.1 KiB
Markdown
58 lines
2.1 KiB
Markdown
# Introduction to benchmarks
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## Sysbench
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Sysbench is a scriptable benchmark tool that evaluates system performance. It includes five kinds of tests: CPU, memory, file I/O, mutex performance, and thread performance. Detailed usage and options can be found by using:
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```shell
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sysbench --help
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sysbench --test=<test_name> help
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```
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Here we list some general commands for evaluation:
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```shell
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# CPU test
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sysbench --test=cpu --cpu-max-prime=<N> --num-threads=<N> run
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# Thread test
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sysbench --test=threads --thread-yields=<N> --num-threads=<N> --max-time=<N> run
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# Mutex test
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sysbench --test=mutex --mutex-num=<N> --mutex-locks=<N> --num-threads=<N>
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# File test, the file-total-size and file-num of prepare and run must be consistent
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sysbench --test=fileio --file-total-size=<N><K,M,G> --file-num=<N> prepare
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sysbench --test=fileio --file-total-size=<N><K,M,G> --file-num=<N> --file-test-mode=<Type> --file-block-size=<N><K,M,G> --max-time=<N> run
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# Memory test
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sysbench --test=memory --memory-block-size=<N><K,M,G> --memory-access-mode=<Type> --memory-oper=<Type> run
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```
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## Membench
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Membench is used to establish a baseline for memory bandwidth and latency. For specific usage and options, use:
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```shell
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membench --help
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```
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Here we list some general commands to use membench:
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```shell
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# Measure the latency of mmap
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membench -runtime=5 -dir=/dev/zero -size=<N><K,M,G> -engine=mmap_lat
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# Measure the latency of page fault handling. The size must be consistent with the file size.
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membench -runtime=5 -dir=path_to_a_file -size=<N><K,M,G> -copysize=<N><K,M,G> -mode=<Type> -engine=page_fault
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# This is a easy way to generate a file with target size in Linux.
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# The following command can create a file named 512K.file with the size 512K.
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dd if=/dev/zero of=512K.file bs=1K count=512
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```
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## Iperf
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iPerf is a tool for actively measuring the maximum achievable bandwidth on IP networks. Usage and options are detailed in:
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```shell
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iperf3 -h
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```
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iperf can run in the following instructions:
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```shell
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export HOST_ADDR=127.0.0.1
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export HOST_PORT=8888
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iperf3 -s -B $HOST_ADDR -p $HOST_PORT -D # Start the server as a daemon
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iperf3 -c $HOST_ADDR -p $HOST_PORT # Start the client
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```
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