USE SysBench test Mysql and PostgreSQL

上一篇BLOG介绍了使用sysbench测试mysql和postgresql的simple场景.

也就是只有select的场景,

http://blog.163.com/digoal@126/blog/static/163877040201341441042613/

本文将介绍包含复杂查询的场景, 包含如下SQL :

 INSERT INTO sbtest(k,c,pad) values(?,?,?)SELECT c from sbtest where id=$1UPDATE sbtest set k=k+? where id=$1SELECT DISTINCT c from sbtest where id between $1 and $2 order by cSELECT c from sbtest where id between $1 and $2 order by cSELECT SUM(K) from sbtest where id between $1 and $2SELECT c from sbtest where id between $1 and $2UPDATE sbtest set c=$1 where id=$2DELETE from sbtest where id=$1

但是需要先解决一个问题, 因为sysbench对pg的支持不太好, 在插入数据时使用的是sysbench产生的值, 而不是sequence.

会产生如下错误 :

[root@db-172-16-3-33 bin]# ./sysbench --max-requests=0 --max-time=60 --num-threads=16 --test=oltp --db-driver=pgsql --pgsql-host=127.0.0.1 --pgsql-port=1999 --pgsql-user=postgres --pgsql-password=postgres --pgsql-db=postgres --oltp-test-mode=complex --oltp-reconnect-mode=session run
sysbench 0.4.12:  multi-threaded system evaluation benchmarkRunning the test with following options:
Number of threads: 16Doing OLTP test.
Running mixed OLTP test
Using Special distribution (12 iterations,  1 pct of values are returned in 75 pct cases)
Using "BEGIN" for starting transactions
Using auto_inc on the id column
Threads started!
FATAL: query execution failed: 145040784
FATAL: database error, exiting...
Done.

日志 :

2013-05-14 16:36:31.259 CST,"postgres","postgres",13938,"127.0.0.1:23937",5191f78f.3672,3,"INSERT",2013-05-14 16:36:31 CST,7/464628,
32112157,ERROR,23505,"duplicate key value violates unique constraint ""sbtest_pkey""","Key (id)=(5014) already exists.",,,,,"INSERT
INTO sbtest values($1,0,' ','aaaaaaaaaaffffffffffrrrrrrrrrreeeeeeeeeeyyyyyyyyyy')",,"_bt_check_unique, nbtinsert.c:398",""

产生这个错误后sysbench会直接退出. 这就无法测试了.

所以需要修改一下sysbench的代码 :

vi sysbench-0.4.12/sysbench/tests/oltp/sb_oltp.c

找到

  /* Prepare the insert statement */snprintf(query, MAX_QUERY_LEN, "INSERT INTO %s values(?,0,' ',""'aaaaaaaaaaffffffffffrrrrrrrrrreeeeeeeeeeyyyyyyyyyy')",args.table_name);

改成 :

  /* Prepare the insert statement */if (args.auto_inc)snprintf(query, MAX_QUERY_LEN, "INSERT INTO %s(k,c,pad) values(0,' ',""'aaaaaaaaaaffffffffffrrrrrrrrrreeeeeeeeeeyyyyyyyyyy')",args.table_name);elsesnprintf(query, MAX_QUERY_LEN, "INSERT INTO %s values(?,0,' ',""'aaaaaaaaaaffffffffffrrrrrrrrrreeeeeeeeeeyyyyyyyyyy')",args.table_name);

然后重新编译即可.

如何编译参考 :

http://blog.163.com/digoal@126/blog/static/16387704020134142151769/

接下来可以使用参数--oltp-auto-inc来控制选择是否使用序列.

[测试结果]

1. PostgreSQL

[root@db-172-16-3-33 bin]# ./sysbench --oltp-auto-inc=on --max-requests=0 --max-time=60 --num-threads=16 --test=oltp --db-driver=pgsql --pgsql-host=127.0.0.1 --pgsql-port=1999 --pgsql-user=postgres --pgsql-password=postgres --pgsql-db=postgres --oltp-test-mode=complex --oltp-reconnect-mode=session run
sysbench 0.4.12:  multi-threaded system evaluation benchmarkRunning the test with following options:
Number of threads: 16Doing OLTP test.
Running mixed OLTP test
Using Special distribution (12 iterations,  1 pct of values are returned in 75 pct cases)
Using "BEGIN" for starting transactions
Using auto_inc on the id column
Threads started!
Time limit exceeded, exiting...
(last message repeated 15 times)
Done.OLTP test statistics:queries performed:read:                            4328002write:                           1545715other:                           618286total:                           6492003transactions:                        309143 (5152.10 per sec.)deadlocks:                           0      (0.00 per sec.)read/write requests:                 5873717 (97889.81 per sec.)other operations:                    618286 (10304.19 per sec.)Test execution summary:total time:                          60.0034stotal number of events:              309143total time taken by event execution: 956.5899per-request statistics:min:                                  1.34msavg:                                  3.09msmax:                                179.74msapprox.  95 percentile:               8.93msThreads fairness:events (avg/stddev):           19321.4375/325.75execution time (avg/stddev):   59.7869/0.02

2. MySQL

[root@db-172-16-3-33 bin]# ./sysbench --oltp-auto-inc=off --max-requests=0 --max-time=60 --num-threads=16 --test=oltp --db-driver=mysql --mysql-host=127.0.0.1 --mysql-port=3306 --mysql-user=root --mysql-password=root --mysql-db=test --oltp-test-mode=complex --oltp-reconnect-mode=session run
sysbench 0.4.12:  multi-threaded system evaluation benchmarkRunning the test with following options:
Number of threads: 16Doing OLTP test.
Running mixed OLTP test
Using Special distribution (12 iterations,  1 pct of values are returned in 75 pct cases)
Using "BEGIN" for starting transactions
Not using auto_inc on the id column
Threads started!
Time limit exceeded, exiting...
(last message repeated 15 times)
Done.OLTP test statistics:queries performed:read:                            1380960write:                           493088other:                           197237total:                           2071285transactions:                        98597  (1643.12 per sec.)deadlocks:                           43     (0.72 per sec.)read/write requests:                 1874048 (31231.08 per sec.)other operations:                    197237 (3286.96 per sec.)Test execution summary:total time:                          60.0059stotal number of events:              98597total time taken by event execution: 958.6545per-request statistics:min:                                  2.30msavg:                                  9.72msmax:                                204.51msapprox.  95 percentile:              26.08msThreads fairness:events (avg/stddev):           6162.3125/43.34execution time (avg/stddev):   59.9159/0.00

[参考]

1. Install SysBench support MySQL and PostgreSQL

http://blog.163.com/digoal@126/blog/static/16387704020134142151769/

2. USE SysBench test Mysql and PostgreSQL - 1

http://blog.163.com/digoal@126/blog/static/163877040201341441042613/

3. http://wiki.bazaar.canonical.com/DistroDownloads#CentOS.2FRHEL

4. http://www.percona.com/docs/wiki/benchmark:sysbench:olpt.lua

5. http://wiki.gentoo.org/wiki/Sysbench

6. https://launchpad.net/sysbench

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