mysql之 mysql資料庫壓力測試工具(mysqlslap)

張衝andy發表於2017-06-12

mysqlslap是從MySQL的5.1.4版開始就開始官方提供的壓力測試工具。透過模擬多個併發客戶端併發訪問MySQL來執行壓力測試,同時提供了較詳細的SQL執行資料效能報告,並且能很好的對比多個儲存引擎(MyISAM,InnoDB等)在相同環境下的相同併發壓力下的效能差別。

mysqlslap官方文件: https://dev.mysql.com/doc/refman/5.6/en/mysqlslap.html

Table 4.14 mysqlslap Options

Format Description Introduced
--auto-generate-sql Generate SQL statements automatically when they are not supplied in files or using command options  
--auto-generate-sql-add-autoincrement Add AUTO_INCREMENT column to automatically generated tables  
--auto-generate-sql-execute-number Specify how many queries to generate automatically  
--auto-generate-sql-guid-primary Add a GUID-based primary key to automatically generated tables  
--auto-generate-sql-load-type Specify the test load type  
--auto-generate-sql-secondary-indexes Specify how many secondary indexes to add to automatically generated tables  
--auto-generate-sql-unique-query-number How many different queries to generate for automatic tests.  
--auto-generate-sql-unique-write-number How many different queries to generate for --auto-generate-sql-write-number  
--auto-generate-sql-write-number How many row inserts to perform on each thread  
--commit How many statements to execute before committing.  
--compress Compress all information sent between client and server  
--concurrency Number of clients to simulate when issuing the SELECT statement  
--create File or string containing the statement to use for creating the table  
--create-schema Schema in which to run the tests  
--csv Generate output in comma-separated values format  
--debug Write debugging log  
--debug-check Print debugging information when program exits  
--debug-info Print debugging information, memory, and CPU statistics when program exits  
--default-auth Authentication plugin to use 5.6.2
--defaults-extra-file Read named option file in addition to usual option files  
--defaults-file Read only named option file  
--defaults-group-suffix Option group suffix value  
--delimiter Delimiter to use in SQL statements  
--detach Detach (close and reopen) each connection after each N statements  
--enable-cleartext-plugin Enable cleartext authentication plugin 5.6.7
--engine Storage engine to use for creating the table  
--help Display help message and exit  
--host Connect to MySQL server on given host  
--iterations Number of times to run the tests  
--login-path Read login path options from .mylogin.cnf 5.6.6
--no-defaults Read no option files  
--no-drop Do not drop any schema created during the test run 5.6.3
--number-char-cols Number of VARCHAR columns to use if --auto-generate-sql is specified  
--number-int-cols Number of INT columns to use if --auto-generate-sql is specified  
--number-of-queries Limit each client to approximately this number of queries  
--only-print Do not connect to databases. mysqlslap only prints what it would have done  
--password Password to use when connecting to server  
--pipe On Windows, connect to server using named pipe  
--plugin-dir Directory where plugins are installed 5.6.2
--port TCP/IP port number to use for connection  
--post-query File or string containing the statement to execute after the tests have completed  
--post-system String to execute using system() after the tests have completed  
--pre-query File or string containing the statement to execute before running the tests  
--pre-system String to execute using system() before running the tests  
--print-defaults Print default options  
--protocol Connection protocol to use  
--query File or string containing the SELECT statement to use for retrieving data  
--secure-auth Do not send passwords to server in old (pre-4.1) format 5.6.17
--shared-memory-base-name The name of shared memory to use for shared-memory connections  
--silent Silent mode  
--socket For connections to localhost, the Unix socket file to use  
--ssl Enable secure connection  
--ssl-ca Path of file that contains list of trusted SSL CAs  
--ssl-capath Path of directory that contains trusted SSL CA certificates in PEM format  
--ssl-cert Path of file that contains X509 certificate in PEM format  
--ssl-cipher List of permitted ciphers to use for connection encryption  
--ssl-crl Path of file that contains certificate revocation lists 5.6.3
--ssl-crlpath Path of directory that contains certificate revocation list files 5.6.3
--ssl-key Path of file that contains X509 key in PEM format  
--ssl-mode Security state of connection to server 5.6.30
--ssl-verify-server-cert Verify server certificate Common Name value against host name used when connecting to server  
--user MySQL user name to use when connecting to server  
--verbose Verbose mode  
--version Display version information and exit  
引數參考表: --host=host_name, -h host_name  連線到的MySQL伺服器的主機名(或IP地址),預設為本機localhost
--user=user_name, -u user_name  連線MySQL服務時用的使用者名稱
--password[=password], -p[password]  連線MySQL服務時用的密碼
--create-schema 代表自定義的測試庫名稱,測試的schema,MySQL中schema也就是database。
(沒指定使用哪個資料庫時,可能會遇到錯誤mysqlslap: Error when connecting to server: 1049 Unknown database 'mysqlslap')
--query=name,-q 使用自定義指令碼執行測試(可以是SQL字串或指令碼),例如可以呼叫自定義的一個儲存過程或者sql語句來執行測試。
--create 建立表所需的SQL(可以是SQL字串或指令碼) 
--concurrency=N, -c N 表示併發量,也就是模擬多少個客戶端同時執行query。可指定多個值,以逗號或者--delimiter引數指定的值做為分隔符。例如:--concurrency=100,200,500(分別執行100、200、500個併發)。
--iterations=N, -i N   測試執行的迭代次數,代表要在不同的併發環境中,各自執行測試多少次;多次執行以便讓結果更加準確。
--number-of-queries=N 總的測試查詢次數(併發客戶數×每客戶查詢次數)
--engine=engine_name, -e engine_name 代表要測試的引擎,可以有多個,用分隔符隔開。例如:--engine=myisam,innodb,memory。
--auto-generate-sql, -a 自動生成測試表和資料,表示用mysqlslap工具自己生成的SQL指令碼來測試併發壓力。
--auto-generate-sql-load-type=type 測試語句的型別。代表要測試的環境是讀操作還是寫操作還是兩者混合的。取值包括:read (scan tables), write (insert into tables), key (read primary keys), update (update primary keys), or mixed (half inserts, half scanning selects). 預設值是:mixed.
--auto-generate-sql-add-auto-increment 代表對生成的表自動新增auto_increment列,從5.1.18版本開始支援。 
--number-char-cols=N, -x N 自動生成的測試表中包含多少個字元型別的列,預設1
--number-int-cols=N, -y N 自動生成的測試表中包含多少個數字型別的列,預設1
--commint=N 多少條DML後提交一次。
--compress, -C 如果伺服器和客戶端支援都壓縮,則壓縮資訊傳遞。
--only-print 只列印測試語句而不實際執行。
--detach=N 執行N條語句後斷開重連。
--debug-info, -T 列印記憶體和CPU的相關資訊。
mysqlslap的執行有如下3個步驟:
1. 建立schema、table、test data 等 (在MySQL中,schema就是database);
2. 執行負載測試,可以使用多個併發客戶端連線;
3. 測試環境清理(刪除建立的資料、表等)。
案例:

[root@mysql ~]# mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --auto-generate-sql-add-autoincrement --number-char-cols=10 --number-int-cols=5 -poracle
Warning: Using a password on the command line interface can be insecure.
Benchmark
Average number of seconds to run all queries: 0.775 seconds
Minimum number of seconds to run all queries: 0.775 seconds
Maximum number of seconds to run all queries: 0.775 seconds
Number of clients running queries: 50
Average number of queries per client: 20

Benchmark
Average number of seconds to run all queries: 0.984 seconds
Minimum number of seconds to run all queries: 0.984 seconds
Maximum number of seconds to run all queries: 0.984 seconds
Number of clients running queries: 100
Average number of queries per client: 10

[root@mysql ~]# mysqlslap -a --concurrency=50,100 --number-of-queries 1000 --auto-generate-sql-add-autoincrement --number-char-cols=10 --number-int-cols=5 --engine=myisam,innodb -poracle
Warning: Using a password on the command line interface can be insecure.
Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.117 seconds
Minimum number of seconds to run all queries: 0.117 seconds
Maximum number of seconds to run all queries: 0.117 seconds
Number of clients running queries: 50
Average number of queries per client: 20

Benchmark
Running for engine myisam
Average number of seconds to run all queries: 0.129 seconds
Minimum number of seconds to run all queries: 0.129 seconds
Maximum number of seconds to run all queries: 0.129 seconds
Number of clients running queries: 100
Average number of queries per client: 10

Benchmark
Running for engine innodb
Average number of seconds to run all queries: 1.665 seconds
Minimum number of seconds to run all queries: 1.665 seconds
Maximum number of seconds to run all queries: 1.665 seconds
Number of clients running queries: 50
Average number of queries per client: 20

Benchmark
Running for engine innodb
Average number of seconds to run all queries: 1.480 seconds
Minimum number of seconds to run all queries: 1.480 seconds
Maximum number of seconds to run all queries: 1.480 seconds
Number of clients running queries: 100
Average number of queries per client: 10

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