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NAME

sysbench - multi-threaded benchmark tool for database systems

SYNOPSIS

sysbench [common-options] --test=name [test-options] <command>

Commands: prepare run cleanup help version

DESCRIPTION

SysBench is a modular, cross-platform and multi-threaded benchmark tool for evaluating OS parameters that are important for a system running a database under intensive load.

The idea of this benchmark suite is to quickly get an impression about system performance without setting up complex database benchmarks or even without installing a database at all.

The design is very simple. SysBench runs a specified number of threads and they all execute requests in parallel. The actual workload produced by requests depends on the specified test mode. You can limit either the total number of requests or the total time for the benchmark, or both.

Compiled-in database drivers:

	•		mysql - MySQL driver
	•		pgsql - PostgreSQL driver

Compiled-in tests:

	•		fileio - File I/O test
	•		cpu - CPU performance test
	•		memory - Memory functions speed test
	•		threads - Threads subsystem performance test
	•		mutex - Mutex performance test

Available test modes are implemented by compiled-in modules, and SysBench was designed to make adding new test modes an easy task. Each test mode may have additional (or workload-specific) options.

GENERAL OPTIONS

--threads=N

number of threads to use [1]

--events=N

limit for total number of events [0]

--time=N

limit for total execution time in seconds [10]

--forced-shutdown=STRING

number of seconds to wait after the --time limit before forcing shutdown, or ’off’ to disable [off]

--thread-stack-size=SIZE

size of stack per thread [64K]

--rate=N

average transactions rate. 0 for unlimited rate [0]

--report-interval=N

periodically report intermediate statistics with a specified interval in seconds. 0 disables intermediate reports [0] --report-checkpoints=[LIST,...] dump full statistics and reset all counters at specified points in time. The argument is a list of comma-separated values representing the amount of time in seconds elapsed from start of test when report checkpoint(s) must be performed. Report checkpoints are off by default. []

--debug[=on|off]

print more debugging info [off]

--validate[=on|off]

perform validation checks where possible [off]

--help[=on|off]

print help and exit [off]

--version[=on|off]

print version and exit [off]

--config-file=FILENAME

File containing command line options

--tx-rate=N

deprecated alias for --rate [0]

--max-requests=N

deprecated alias for --events [0]

--max-time=N

deprecated alias for --time [0]

--num-threads=N

deprecated alias for --threads [1]

PSEUDO-RANDOM NUMBERS GENERATOR OPTIONS

--rand-type=STRING

random numbers distribution {uniform,gaussian,pareto} [special]

--rand-seed=N

seed for random number generator. When 0, the current time is used as a RNG seed. [0]

--rand-pareto-h=N

parameter h for pareto distribution [0.2]

--rand-zipfian-exp=N

shape parameter (exponent, theta) for the Zipfian distribution [0.8]

LOG OPTIONS

--verbosity=N

verbosity level {5 - debug, 0 - only critical messages} [3]

--percentile=N

percentile to calculate in latency statistics (1-100). Use the special value of 0 to disable percentile calculations [95]

--histogram[=on|off]

print latency histogram in report [off]

GENERAL DATABASE OPTIONS

--db-driver=STRING

specifies database driver to use (’help’ to get list of available drivers) [mysql]

--db-ps-mode=STRING

prepared statements usage mode {auto, disable} [auto]

--db-debug[=on|off]

print database-specific debug information [off]

MYSQL OPTIONS

--mysql-host=[LIST,...]

MySQL server host [localhost]

--mysql-port=[LIST,...]

MySQL server port [3306]

--mysql-socket=[LIST,...]

MySQL socket

--mysql-user=STRING

MySQL user [sbtest]

--mysql-password=STRING

MySQL password []

--mysql-db=STRING

MySQL database name [sbtest]

--mysql-ssl[=on|off]

use SSL connections, if available in the client library [off]

--mysql-ssl-cipher=STRING

use specific cipher for SSL connections []

--mysql-compression[=on|off]

use compression, if available in the client library [off]

--mysql-debug[=on|off]

trace all client library calls [off] --mysql-ignore-errors=[LIST,...] list of errors to ignore, or "all" [1213,1020,1205]

--mysql-dry-run[=on|off]

Dry run, pretend that all MySQL client API calls are successful without executing them [off]

PGSQL OPTIONS

--pgsql-host=STRING

PostgreSQL server host [localhost]

--pgsql-port=N

PostgreSQL server port [5432]

--pgsql-user=STRING

PostgreSQL user [sbtest] --pgsql-password=STRING PostgreSQL password []

--pgsql-db=STRING

PostgreSQL database name [sbtest]

FILEIO OPTIONS

--file-num=N

number of files to create [128]

--file-block-size=N

block size to use in all IO operations [16384]

--file-total-size=SIZE

total size of files to create [2G]

--file-test-mode=STRING

test mode {seqwr, seqrewr, seqrd, rndrd, rndwr, rndrw}

--file-io-mode=STRING

file operations mode {sync,async,mmap} [sync]

--file-async-backlog=N

number of asynchronous operatons to queue per thread [128] --file-extra-flags=[LIST,...] list of additional flags to use to open files {sync,dsync,direct} []

--file-fsync-freq=N

do fsync() after this number of requests (0 - don’t use fsync()) [100]

--file-fsync-all[=on|off]

do fsync() after each write operation [off]

--file-fsync-end[=on|off]

do fsync() at the end of test [on]

--file-fsync-mode=STRING

which method to use for synchronization {fsync, fdatasync} [fsync]

--file-merged-requests=N

merge at most this number of IO requests if possible (0 - don’t merge) [0]

--file-rw-ratio=N

reads/writes ratio for combined test [1.5]

CPU OPTIONS

--cpu-max-prime=N upper limit for primes generator [10000]

MEMORY OPTIONS

--memory-block-size=SIZE

size of memory block for test [1K]

--memory-total-size=SIZE

total size of data to transfer [100G]

--memory-scope=STRING

memory access scope {global,local} [global]

--memory-hugetlb[=on|off]

allocate memory from HugeTLB pool [off]

--memory-oper=STRING

type of memory operations {read, write, none} [write] --memory-access-mode=STRING memory access mode {seq,rnd} [seq]

THREAD OPTIONS

--thread-yields=N number of yields to do per request [1000]
--thread-locks=N

number of locks per thread [8]

MUTEX OPTIONS

--mutex-num=N

total size of mutex array [4096] --mutex-locks=N number of mutex locks to do per thread [50000] --mutex-loops=N number of empty loops to do outside mutex lock [10000]