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sysbench is a scriptable multi-threaded benchmark tool based on LuaJIT. It is most frequently used for database benchmarks, but can also be used to create arbitrarily complex workloads that do not involve a database server.
Install Sysbench on Raspberry Pi
sudo apt-get install sysbench
Run a basic CPU stress test
To run a basic CPU stress test using sysbench, use the following command:
sysbench --test=cpu --cpu-max-prime=20000 --validate run
This is what I saw on a Raspberry Pi 4
user@raspberrypi:~ $ sysbench --test=cpu --cpu-max-prime=20000 --validate run
WARNING: the --test option is deprecated. You can pass a script name or path on the command line without any options.
sysbench 1.0.20 (using system LuaJIT 2.1.0-beta3)
Running the test with following options:
Number of threads: 1
Validation checks: on.
Initializing random number generator from current time
Prime numbers limit: 20000
Initializing worker threads...
Threads started!
CPU speed:
events per second: 580.36
General statistics:
total time: 10.0015s
total number of events: 5807
Latency (ms):
min: 1.71
avg: 1.72
max: 5.74
95th percentile: 1.73
sum: 9997.60
Threads fairness:
events (avg/stddev): 5807.0000/0.00
execution time (avg/stddev): 9.9976/0.00
More examples
calculate primes
sysbench --test=cpu --cpu-max-prime=20000 run
test the I/O Output of your Raspberry Pi
sysbench --test=fileio --file-total-size=2G prepare
sysbench --test=fileio --file-total-size=2G --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 run
sysbench --test=fileio --file-total-size=2G cleanup
memory read and write
sysbench --test=memory run --memory-total-size=2G
sysbench --test=memory run --memory-total-size=2G --memory-oper=readThere are many options available
General Command Line Options
The table below lists the supported common options, their descriptions and default values:
| Option | Description | Default value |
|---|---|---|
--threads |
The total number of worker threads to create | 1 |
--events |
Limit for total number of requests. 0 (the default) means no limit | 0 |
--time |
Limit for total execution time in seconds. 0 means no limit | 10 |
--warmup-time |
Execute events for this many seconds with statistics disabled before the actual benchmark run with statistics enabled. This is useful when you want to exclude the initial period of a benchmark run from statistics. In many benchmarks, the initial period is not representative because CPU/database/page and other caches need some time to warm up | 0 |
--rate |
Average transactions rate. The number specifies how many events (transactions) per seconds should be executed by all threads on average. 0 (default) means unlimited rate, i.e. events are executed as fast as possible | 0 |
--thread-init-timeout |
Wait time in seconds for worker threads to initialize | 30 |
--thread-stack-size |
Size of stack for each thread | 32K |
--report-interval |
Periodically report intermediate statistics with a specified interval in seconds. Note that statistics produced by this option is per-interval rather than cumulative. 0 disables intermediate reports | 0 |
--debug |
Print more debug info | off |
--validate |
Perform validation of test results where possible | off |
--help |
Print help on general syntax or on a specified test, and exit | off |
--verbosity |
Verbosity level (0 – only critical messages, 5 – debug) | 4 |
--percentile |
sysbench measures execution times for all processed requests to display statistical information like minimal, average and maximum execution time. For most benchmarks it is also useful to know a request execution time value matching some percentile (e.g. 95% percentile means we should drop 5% of the most long requests and choose the maximal value from the remaining ones). This option allows to specify a percentile rank of query execution times to count | 95 |
--luajit-cmd |
perform a LuaJIT control command. This option is equivalent to luajit -j. See LuaJIT documentation for more information |
Note that numerical values for all size options (like --thread-stack-size in this table) may be specified by appending the corresponding multiplicative suffix (K for kilobytes, M for megabytes, G for gigabytes and T for terabytes).
Random Numbers Options
sysbench provides a number of algorithms to generate random numbers that are distributed according to a given probability distribution. The table below lists options that can be used to control those algorithms.
| Option | Description | Default value |
|---|---|---|
--rand-type |
random numbers distribution {uniform, gaussian, special, pareto, zipfian} to use by default. Benchmark scripts may choose to use either the default distribution, or specify it explictly, i.e. override the default. | special |
--rand-seed |
seed for random number generator. When 0, the current time is used as an RNG seed. | 0 |
--rand-spec-iter |
number of iterations for the special distribution | 12 |
--rand-spec-pct |
percentage of the entire range where ‘special’ values will fall in the special distribution | 1 |
--rand-spec-res |
percentage of ‘special’ values to use for the special distribution | 75 |
--rand-pareto-h |
shape parameter for the Pareto distribution | 0.2 |
--rand-zipfian-exp |
shape parameter (theta) for the Zipfian distribution | 0.8 |
Links
https://github.com/akopytov/sysbench
