MySQL Study之--MySQL壓力測試工具mysqlslap，--mysqlmysqlslap

MySQL Study之--MySQL壓力測試工具mysqlslap，--mysqlmysqlslap
MySQL Study之--MySQL壓力測試工具mysqlslap一、Mysqlslap介紹    mysqlslap是MySQL5.1之後內建的benchmark基準測試載入器，類似Apache Bench負載產生工具，產生schema，裝載資料，執行benckmark和查詢資料，文法簡單，靈活，容易使用。該工具可以類比多個用戶端同時並發的向伺服器發出查詢更新，給出了效能測試資料而且提供了多種引擎的效能比較。mysqlslap為mysql效能最佳化前後提供了直觀的驗證依據，筆者建議系統營運人員應該掌握一些常見的壓力測試工具，這樣才能較為準確的掌握線上系統能夠支撐的使用者資料傳輸量上限及其抗壓性等問題。  www.2cto.com  二、使用方法介紹可以使用mysqlslap --help來顯示使用方法：1) --concurrency代表並發數量，多個可以用逗號隔開,例如：concurrency=10,50,100, 並發連接線程數分別是10、50、100個並發。2) --engines代表要測試的引擎，可以有多個，用分隔字元隔開。3) --iterations代表要運行這些測試多少次。4) --auto-generate-sql 代表用系統自己產生的SQL指令碼來測試。5）--auto-generate-sql-load-type 代表要測試的是讀還是寫還是兩者混合的（read,write,update,mixed）6) --number-of-queries 代表總共要運行多少次查詢。每個用戶端啟動並執行查詢數量可以用查詢總數/並發數來計算。7) --debug-info 代表要額外輸出CPU以及記憶體的相關資訊。8) --number-int-cols ：建立測試表的 int 型欄位數量9) --auto-generate-sql-add-autoincrement : 代表對產生的表自動添加auto_increment列，從5.1.18版本開始10) --number-char-cols 建立測試表的 char 型欄位數量。11) --create-schema 測試的schema，MySQL中schema也就是database。12) --query  使用自訂指令碼執行測試，例如可以調用自訂的一個預存程序或者sql語句來執行測試。13) --only-print 如果只想列印看看SQL語句是什麼，可以用這個選項。二、案例分析

[root@mysrv ~]# mysqlslap -Vmysqlslap  Ver 1.0 Distrib 5.1.66, for redhat-linux-gnu (x86_64)

[root@mysrv ~]# mysqlslap --helpmysqlslap  Ver 1.0 Distrib 5.1.66, for redhat-linux-gnu (x86_64)Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Run a query multiple times against the server.Usage: mysqlslap [OPTIONS]Default options are read from the following files in the given order:/etc/mysql/my.cnf /etc/my.cnf ~/.my.cnf The following groups are read: mysqlslap clientThe following options may be given as the first argument:--print-defaults        Print the program argument list and exit.--no-defaults           Don't read default options from any option file.--defaults-file=#       Only read default options from the given file #.--defaults-extra-file=# Read this file after the global files are read.  -?, --help          Display this help and exit.  -a, --auto-generate-sql                       Generate SQL where not supplied by file or command line.  --auto-generate-sql-add-autoincrement                       Add an AUTO_INCREMENT column to auto-generated tables.  --auto-generate-sql-execute-number=#                       Set this number to generate a set number of queries to                      run.  --auto-generate-sql-guid-primary                       Add GUID based primary keys to auto-generated tables.  --auto-generate-sql-load-type=name                       Specify test load type: mixed, update, write, key, or                      read; default is mixed.  --auto-generate-sql-secondary-indexes=#                       Number of secondary indexes to add to auto-generated                      tables.  --auto-generate-sql-unique-query-number=#                       Number of unique queries to generate for automatic tests.  --auto-generate-sql-unique-write-number=#                       Number of unique queries to generate for                      auto-generate-sql-write-number.  --auto-generate-sql-write-number=#                       Number of row inserts to perform for each thread (default                      is 100).  --commit=#          Commit records every X number of statements.  -C, --compress      Use compression in server/client protocol.  -c, --concurrency=name                       Number of clients to simulate for query to run.  --create=name       File or string to use create tables.  --create-schema=name                       Schema to run tests in.  --csv[=name]        Generate CSV output to named file or to stdout if no file                      is named.  -#, --debug[=#]     This is a non-debug version. Catch this and exit.  --debug-check       Check memory and open file usage at exit.  -T, --debug-info    Print some debug info at exit.  -F, --delimiter=name                       Delimiter to use in SQL statements supplied in file or                      command line.  --detach=#          Detach (close and reopen) connections after X number of                      requests.  -e, --engine=name   Storage engine to use for creating the table.  -h, --host=name     Connect to host.  -i, --iterations=#  Number of times to run the tests.  --no-drop           Do not drop the schema after the test.  -x, --number-char-cols=name                       Number of VARCHAR columns to create in table if                      specifying --auto-generate-sql.  -y, --number-int-cols=name                       Number of INT columns to create in table if specifying                      --auto-generate-sql.  --number-of-queries=#                       Limit each client to this number of queries (this is not                      exact).  --only-print        Do not connect to the databases, but instead print out                      what would have been done.  -p, --password[=name]                       Password to use when connecting to server. If password is                      not given it's asked from the tty.  -P, --port=#        Port number to use for connection.  --post-query=name   Query to run or file containing query to execute after                      tests have completed.  --post-system=name  system() string to execute after tests have completed.  --pre-query=name    Query to run or file containing query to execute before                      running tests.  --pre-system=name   system() string to execute before running tests.  --protocol=name     The protocol to use for connection (tcp, socket, pipe,                      memory).  -q, --query=name    Query to run or file containing query to run.  -s, --silent        Run program in silent mode - no output.  -S, --socket=name   The socket file to use for connection.  --ssl               Enable SSL for connection (automatically enabled with                      other flags).Disable with --skip-ssl.  --ssl-ca=name       CA file in PEM format (check OpenSSL docs, implies                      --ssl).  --ssl-capath=name   CA directory (check OpenSSL docs, implies --ssl).  --ssl-cert=name     X509 cert in PEM format (implies --ssl).  --ssl-cipher=name   SSL cipher to use (implies --ssl).  --ssl-key=name      X509 key in PEM format (implies --ssl).  --ssl-verify-server-cert                       Verify server's "Common Name" in its cert against                      hostname used when connecting. This option is disabled by                      default.  -u, --user=name     User for login if not current user.  -v, --verbose       More verbose output; you can use this multiple times to                      get even more verbose output.  -V, --version       Output version information and exit.

案例一：
[root@mysrv ~]#  mysqlslap -uroot -poracle --concurrency=100 --iterations=1 --auto-generate-sql --auto-generate-sql-load-type=mixed --auto-generate-sql-add-autoincrement --engine=myisam --number-of-queries=10 --debug-info</span></strong>
測試資訊：
Benchmark
        Running for engine myisam
        Average number of seconds to run all queries: 0.473 seconds
        Minimum number of seconds to run all queries: 0.473 seconds
        Maximum number of seconds to run all queries: 0.473 seconds
        Number of clients running queries: 100
        Average number of queries per client: 0
User time 0.04, System time 0.14
Maximum resident set size 6732, Integral resident set size 0
Non-physical pagefaults 1333, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 2389, Involuntary context switches 48
備忘：本次測試以100個並發線程、測試1次，自動產生SQL測試指令碼、讀、寫、更新混合測試、自增長欄位、測試引擎為myisam、共運行10次查詢，輸出cpu資源資訊 案例二： [root@mysrv ~]# mysqlslap -h127.0.0.1 -P3306 -u root -poracle --concurrency=100 --iterations=1 --create-schema='prod' --query='select * from t1;' --number-of-queries=10 -e innodb --debug-info  測試資訊：
Benchmark
        Running for engine innodb
        Average number of seconds to run all queries: 1.455 seconds
        Minimum number of seconds to run all queries: 1.455 seconds
        Maximum number of seconds to run all queries: 1.455 seconds
        Number of clients running queries: 100
        Average number of queries per client: 0
User time 0.03, System time 0.12
Maximum resident set size 5420, Integral resident set size 0
Non-physical pagefaults 1273, Physical pagefaults 0, Swaps 0
Blocks in 0 out 0, Messages in 0 out 0, Signals 0
Voluntary context switches 536, Involuntary context switches 151
備忘：使用mysqlslap指定sql語句進行測試 案例三： [root@mysrv ~]# mysqlslap --concurrency=50,100,200 --iterations=20 --number-int-cols=4 --number-char-cols=35 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=read --engine=myisam,innodb --number-of-queries=200 --verbose --socket=/tmp/mysql.sock -uroot -poracle 測試資訊：Benchmark
        Running for engine myisam
        Average number of seconds to run all queries: 1.521 seconds
        Minimum number of seconds to run all queries: 1.397 seconds
        Maximum number of seconds to run all queries: 2.092 seconds
        Number of clients running queries: 50
        Average number of queries per client: 4
Benchmark
        Running for engine myisam
        Average number of seconds to run all queries: 1.465 seconds
        Minimum number of seconds to run all queries: 1.279 seconds
        Maximum number of seconds to run all queries: 1.996 seconds
        Number of clients running queries: 100
        Average number of queries per client: 2
Benchmark
        Running for engine myisam
        Average number of seconds to run all queries: 1.367 seconds
        Minimum number of seconds to run all queries: 1.260 seconds
        Maximum number of seconds to run all queries: 1.576 seconds
        Number of clients running queries: 200
        Average number of queries per client: 1
Benchmark
        Running for engine innodb
        Average number of seconds to run all queries: 1.198 seconds
        Minimum number of seconds to run all queries: 1.084 seconds
        Maximum number of seconds to run all queries: 1.301 seconds
        Number of clients running queries: 50
        Average number of queries per client: 4
Benchmark
        Running for engine innodb
        Average number of seconds to run all queries: 1.423 seconds
        Minimum number of seconds to run all queries: 1.238 seconds
        Maximum number of seconds to run all queries: 1.761 seconds
        Number of clients running queries: 100
        Average number of queries per client: 2
Benchmark
        Running for engine innodb
        Average number of seconds to run all queries: 1.389 seconds
        Minimum number of seconds to run all queries: 1.268 seconds
        Maximum number of seconds to run all queries: 1.653 seconds
        Number of clients running queries: 200
        Average number of queries per client: 1
備忘：   #系統指令碼測試，增加int型 4列char 型35列，測試2種引擎myisam,innodb讀的效能，分別用50，100，200個用戶端對伺服器進行測試總共200個查詢語句 執行20次查詢

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