How to use MySQL stress testing tools

[root@mysql ~]# vim /etc/my.cnf 
................
[mysqld]
max_connections=1024
[root@mysql ~]# systemctl restart mysqld

#View the maximum number of connectionsmysql> show variables like 'max_connections';    
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| max_connections | 1024 |
+-----------------+-------+
1 row in set (0.00 sec)

[root@mysql ~]# yum -y install epel-release #Install third-party epel source[root@mysql ~]# yum -y install sysbench #Install sysbench tool[root@mysql ~]# sysbench --version #Confirm that the tool has been installed sysbench 1.0.17

[root@mysql ~]# sysbench --help
Usage:
 sysbench [options]... [testname] [command]

Commands implemented by most tests: prepare run cleanup help # Available commands, four General options: # General options --threads=N The number of threads to use, default is 1 [1]
 --events=N Maximum number of events allowed [0]
 --time=N Maximum 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 The stack size for each thread [64K]
 --rate=N Average transfer rate. 0 means no limit[0]
 --report-interval=N Periodically report intermediate statistics with the specified interval in seconds 0 Disable intermediate reporting [0]
 --report-checkpoints=[LIST,...] Dump complete statistics and reset all counters at the specified points in time. The parameter is a comma-separated list of values ​​indicating that a reporting checkpoint must be performed when this amount of time has passed since the start of the test (in seconds). Report checkpointing is off by default. []
 --debug[=on|off] Print more debug information [off]
 --validate[=on|off] Perform validation checks if possible [off]
 --help[=on|off] Display help information and exit [off]
 --version[=on|off] show version information and exit [off]
 --config-file=FILENAME File containing command line options --tx-rate=N Deprecated, use --rate [0] instead
 --max-requests=N is deprecated, use --events [0] instead
 --max-time=N is deprecated, use --time [0] instead
 --num-threads=N is deprecated, use --threads instead [1]

Pseudo-Random Numbers Generator options: # Pseudo-random number generator options --rand-type=STRING random numbers distribution {uniform,gaussian,special,pareto} [special]
 --rand-spec-iter=N number of iterations used for numbers generation [12]
 --rand-spec-pct=N percentage of values ​​to be treated as 'special' (for special distribution) [1]
 --rand-spec-res=N percentage of 'special' values ​​to use (for special distribution) [75]
 --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]

Log options: # 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: # General database options --db-driver=STRING Specify the database driver to use ('help' to get list of available drivers)
 --db-ps-mode=STRING prepared statements usage mode {auto, disable} [auto]
 --db-debug[=on|off] print database-specific debug information [off]

Compiled-in database drivers: # Built-in database driver, supports MySQL and PostgreSQL by default
 MySQL driver
 pgsql - PostgreSQL driver

mysql options: # MySQL database-specific 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: # PostgreSQL database-specific 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]

Compiled-in tests: # Built-in test type fileio - File I/O test
 cpu - CPU performance test
 memory - Memory functions speed test
 threads - Threads subsystem performance test
 mutex - Mutex performance test

See 'sysbench <testname> help' for a list of options for each test.

#View the usage of the lua script that comes with sysbench [root@mysql ~]# sysbench /usr/share/sysbench/oltp_common.lua help
#You must create the sbtest library, which is the default library name used by sysbench [root@mysql ~]# mysqladmin -uroot -p123 create sbtest;
#Then, prepare the tables used for testing. These test tables are placed in the test library sbtest. The lua script used here is /usr/share/sysbench/oltp_common.lua
[root@mysql ~]# sysbench --mysql-host=127.0.0.1 \
> --mysql-port=3306 \
> --mysql-user=root \
> --mysql-password=123 \
> /usr/share/sysbench/oltp_common.lua \
> --tables=10 \
> --table_size=100000 \
> prepare
#--tables=10 means creating 10 test tables.
#--table_size=100000 means inserting 100,000 rows of data into each table.
#prepare indicates that this is the process of preparing the number.

[root@mysql ~]# mysql -uroot -p123 sbtest; #Log in to the sbtest librarymysql> show tables; #View the corresponding tables+------------------+
| Tables_in_sbtest |
+------------------+
|sbtest1|
|sbtest10|
|sbtest2|
|sbtest3|
|sbtest4|
|sbtest5|
|sbtest6|
|sbtest7|
|sbtest8|
|sbtest9|
+------------------+
10 rows in set (0.00 sec)

mysql> select count(*) from sbtest1; #Randomly select a table and confirm that it has 100,000 records+----------+
| count(*) |
+----------+
| 100000 |
+----------+
1 row in set (0.01 sec)

#Execute the test command as follows:
[root@mysql ~]# sysbench --threads=4 \
> --time=20 \
> --report-interval=5 \
> --mysql-host=127.0.0.1 \
> --mysql-port=3306 \
> --mysql-user=root \
> --mysql-password=123 \
> /usr/share/sysbench/oltp_read_write.lua \
> --tables=10 \
> --table_size=100000 \
> run

[root@mysql ~]# sysbench --threads=4 --time=20 --report-interval=5 --mysql-host=127.0.0.1 --mysql-port=3306 --mysql-user=root --mysql-password=123 /usr/share/sysbench/oltp_read_write.lua --tables=10 --table_size=100000 run

sysbench 1.0.17 (using system LuaJIT 2.0.4)

Running the test with following options:
Number of threads: 4
Report intermediate results every 5 second(s)
Initializing random number generator from current time

Initializing worker threads...

Threads started!
#The following are the results returned every 5 seconds. The statistical indicators include:
# Number of threads, tps (transactions per second), qps (queries per second),
# Read/write/other times per second, latency, errors per second, reconnections per second [ 5s ] thds: 4 tps: 1040.21 qps: 20815.65 (r/w/o: 14573.17/4161.25/2081.22) lat (ms,95%): 7.17 err/s: 0.00 reconn/s: 0.00
[ 10s ] thds: 4 tps: 1083.34 qps: 21667.15 (r/w/o: 15165.93/4334.55/2166.68) lat (ms,95%): 6.55 err/s: 0.00 reconn/s: 0.00
[ 15s ] thds: 4 tps: 1121.57 qps: 22429.09 (r/w/o: 15700.64/4485.30/2243.15) lat (ms,95%): 6.55 err/s: 0.00 reconn/s: 0.00
[ 20s ] thds: 4 tps: 1141.69 qps: 22831.98 (r/w/o: 15982.65/4566.16/2283.18) lat (ms,95%): 6.09 err/s: 0.00 reconn/s: 0.00
SQL statistics:
  queries performed:
    read: 307146 # Number of read operations executedwrite: 87756 # Number of write operations executedother: 43878 # Number of other operations executedtotal: 438780
  transactions: 21939 (1096.57 per sec.) # Average rate of transaction execution queries: 438780 (21931.37 per sec.) # Average number of queries executed per second ignored errors: 0 (0.00 per sec.)
  reconnects: 0 (0.00 per sec.)

General statistics:
  total time: 20.0055s # Total time consumed total number of events: 21939 # Total number of requests (read, write, other)

Latency (ms):
     min: 1.39
     avg: 3.64
     max: 192.05
     95th percentile: 6.67 # Average latency calculated by sampling sum: 79964.26

Threads fairness:
  events (avg/stddev): 5484.7500/15.12
  execution time (avg/stddev): 19.9911/0.00

[root@mysql ~]# sysbench --help
   .......... # Omit some content 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

[root@mysql ~]# sysbench fileio help
sysbench 1.0.17 (using system LuaJIT 2.0.4)

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]

[root@mysql ~]# sysbench fileio --file-num=5 --file-total-size=2G prepare
[root@mysql ~]# ll -lh test*
-rw------ 1 root root 410M May 26 16:05 test_file.0
-rw------ 1 root root 410M May 26 16:05 test_file.1
-rw------ 1 root root 410M May 26 16:05 test_file.2
-rw------ 1 root root 410M May 26 16:05 test_file.3
-rw------ 1 root root 410M May 26 16:05 test_file.4

[root@mysql ~]# sysbench --events=5000 \
> --threads=16 \
> fileio \
> --file-num=5 \
> --file-total-size=2G \
> --file-test-mode=rndrw \
> --file-fsync-freq=0 \
> --file-block-size=16384 \
> run

Running the test with following options:
Number of threads: 16
Initializing random number generator from current time

Extra file open flags: (none)
5 files, 409.6MiB each
2GiB total file size
Block size 16KiB
Number of IO requests: 5000
Read/Write ratio for combined random IO test: 1.50
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random r/w test
Initializing worker threads...

Threads started!

File operations:
  reads/s: 9899.03
  writes/s: 6621.38
  fsyncs/s: 264.33

Throughput: # Throughput read, MiB/s: 154.66 # Indicates read bandwidth written, MiB/s: 103.46 # Indicates write bandwidth General statistics:
  Total time: 0.3014s
  Total number of events: 5000

Latency (ms):
     min: 0.00
     avg: 0.81
     max: 53.56
     95th percentile: 4.10
     sum: 4030.48

Threads fairness:
  events (avg/stddev): 312.5000/27.64
  execution time (avg/stddev): 0.2519/0.02

[root@mysql ~]# sysbench cpu --threads=40 --events=10000 --cpu-max-prime=20000 run