pg多线程更新会发生死锁_sysbench 0.5 基准测试

sysbench 介绍

SysBench是一个模块化的、跨平台、多线程基准测试工具，主要用于评估测试各种不同系统参数下的数据库负载情况。它主要包括以下几种方式的测试：

cpu性能

磁盘io性能

调度程序性能

内存分配及传输速度

POSIX线程性能

数据库性能(OLTP基准测试)

目前sysbench主要支持 MySQL,pgsql,Oracle 这3种数据库。

sysbench 安装

默认支持MySQL，如果需要测试Oracle/PostgreSQL，则在configure时需要加上–with-oracle或者–with-pgsql参数，

sysbench默认安装在： /usr/local/bin/sysbench

shell> tar -zxvf sysbench-0.5.tar.gz -C /db/tool/

shell> cd /db/tool/sysbench-0.5

shell> chmod +x autogen.sh

shell> ./autogen.sh

automake 1.10.x (aclocal) wasn't found, exiting

shell> yum install automake

shell> ./autogen.sh

libtoolize 1.4+ wasn't found, exiting

shell> yum install libtool

shell> ./autogen.sh

./autogen.sh

./autogen.sh: running `aclocal -I m4'

./autogen.sh: running `libtoolize --copy --force'

libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, `config'.

libtoolize: copying file `config/ltmain.sh'

libtoolize: putting macros in AC_CONFIG_MACRO_DIR, `m4'.

libtoolize: copying file `m4/libtool.m4'

libtoolize: copying file `m4/ltoptions.m4'

libtoolize: copying file `m4/ltsugar.m4'

libtoolize: copying file `m4/ltversion.m4'

libtoolize: copying file `m4/lt~obsolete.m4'

./autogen.sh: running `autoheader'

./autogen.sh: running `automake -c --foreign --add-missing'

configure.ac:23: installing `config/compile'

configure.ac:11: installing `config/config.guess'

configure.ac:11: installing `config/config.sub'

configure.ac:16: installing `config/install-sh'

configure.ac:16: installing `config/missing'

sysbench/Makefile.am: installing `config/depcomp'

./autogen.sh: running `autoconf'

Libtoolized with: libtoolize (GNU libtool) 2.2.6b

Automade with: automake (GNU automake) 1.11.1

Configured with: autoconf (GNU Autoconf) 2.63

shell> ./configure --prefix=/db/sysbench --with-mysql-includes=/db/mysql/include --with-mysql-libs=/db/mysql/lib

shell> make && make install

测试安装

shell> cp /db/sysbench/bin/sysbench /usr/local/bin/

shell> sysbench --help

sysbench: error while loading shared libraries: libmysqlclient.so.18: cannot open shared object file:

No such file or directory

问题原因：sysbench无法找到mysql的库文件，可能是环境变量LD_LIBRARY_PATH没有设置，设置后即可解决该问题：

添加export LD_LIBRARY_PATH=/db/mysql/lib即可

sysbench 参数

shell> sysbench --help

Missing required command argument.

Usage:

sysbench [general-options]... --test=[test-options]... command

General options:

--num-threads=N number of threads to use [1]

--max-requests=N limit for total number of requests [10000]

--max-time=N limit for total execution time in seconds [0]

--forced-shutdown=STRING amount of time to wait after --max-time before forcing shutdown [off]

--thread-stack-size=SIZE size of stack per thread [64K]

--tx-rate=N target transaction rate (tps) [0]

--tx-jitter=N target transaction variation, in microseconds [0]

--report-interval=N periodically report intermediate statistics with a specified interval in seconds. 0 disables

intermediate reports [0]

--test=STRING test to run

--debug=[on|off] print more debugging info [off]

--validate=[on|off] perform validation checks where possible [off]

--help=[on|off] print help and exit

--version=[on|off] print version and exit [off]

--rand-init=[on|off] initialize random number generator [off]

--rand-type=STRING random numbers distribution {uniform,gaussian,special} [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, ignored when 0 [0]

Log options:

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

--percentile=N percentile rank of query response times to count [95]

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

Commands: prepare run cleanup help version

See 'sysbench --test=help' for a list of options for each test.

CPU测试

sysbench CPU测试使用64位整数，测试计算素数直到某个最大值所需要的时间

shell> sysbench --test=cpu --cpu-max-prime=2000 run

sysbench 0.5: multi-threaded system evaluation benchmark

Running the test with following options:

Number of threads: 1

Random number generator seed is 0 and will be ignored

Primer numbers limit: 2000

Threads started!

Test execution summary:

total time: 2.2452s

total number of events: 10000

total time taken by event execution: 2.2347s

per-request statistics:

min: 0.20ms

avg: 0.22ms

max: 3.35ms

approx. 95 percentile: 0.27ms

Threads fairness:

events (avg/stddev): 10000.0000/0.00

execution time (avg/stddev): 2.2347/0.00

补充：

查看CPU信息方法

查看物理cpu个数

grep "physical id" /proc/cpuinfo | sort -u | wc -l

查看核心数量

grep "core id" /proc/cpuinfo | sort -u | wc -l

查看线程数量

grep "processor" /proc/cpuinfo | sort -u | wc -l

在sysbench的测试中，--num-threads取值为"线程数量"即可

线程(thread)测试

测试线程调度器的性能。对于高负载情况下测试线程调度器的行为非常有用

shell> sysbench --test=threads --num-threads=64 --thread-yields=100 --thread-locks=2 run

sysbench 0.5: multi-threaded system evaluation benchmark

Running the test with following options:

Number of threads: 64

Random number generator seed is 0 and will be ignored

Threads started!

Test execution summary:

total time: 1.9581s

total number of events: 10000

total time taken by event execution: 124.8938s

per-request statistics:

min: 0.05ms

avg: 12.49ms

max: 151.15ms

approx. 95 percentile: 50.83ms

Threads fairness:

events (avg/stddev): 156.2500/14.48

execution time (avg/stddev): 1.9515/0.00

文件IO性能测试

生成需要的测试文件，文件总大小5G，16个并发线程。执行完后会在当前目录下生成一堆小文件。

shell> sysbench --test=fileio --num-threads=16 --file-total-size=5G prepare

执行测试，指定随机读写模式

指定读写模式：

seqwr 顺序写入

seqrewr 顺序重写

seqrd 顺序读取

rndrd 随机读取

rndwr 随机写入

rndrw 混合随机读/写

shell> sysbench --test=fileio --num-threads=16 --init-rng=on --file-total-size=5G --file-test-mode=rndrw run

sysbench 0.5: multi-threaded system evaluation benchmark

Running the test with following options:

Number of threads: 16

Random number generator seed is 0 and will be ignored

Threads started!

Operations performed: 5999 reads, 4001 writes, 12800 Other = 22800 Total

Read 93.734Mb Written 62.516Mb Total transferred 156.25Mb (9.2561Mb/sec) ##吞吐量

592.39 Requests/sec executed

Test execution summary:

total time: 16.8808s

total number of events: 10000

total time taken by event execution: 176.1816s

per-request statistics:

min: 0.01ms

avg: 17.62ms

max: 416.73ms

approx. 95 percentile: 104.82ms

Threads fairness:

events (avg/stddev): 625.0000/62.39

execution time (avg/stddev): 11.0114/0.67

清除测试文件

shell> sysbench --test=fileio --num-threads=16 --file-total-size=5G cleanup

互斥锁(Mutex)测试

测试互斥锁的性能，方式是模拟所有线程在同一时刻并发运行，并都短暂请求互斥锁。

shell> sysbench --test=mutex --num-threads=16 --mutex-num=1024 --mutex-locks=10000 --mutex-loops=5000 run

sysbench 0.5: multi-threaded system evaluation benchmark

Running the test with following options:

Number of threads: 16

Random number generator seed is 0 and will be ignored

Threads started!

Test execution summary:

total time: 0.0135s

total number of events: 16

total time taken by event execution: 0.0411s

per-request statistics:

min: 0.70ms

avg: 2.57ms

max: 9.19ms

approx. 95 percentile: 9.16ms

Threads fairness:

events (avg/stddev): 1.0000/0.00

execution time (avg/stddev): 0.0026/0.00

内存测试

内存测试测试了内存的连续读写性能。

shell> sysbench --test=memory --num-threads=16 --memory-block-size=8192 --memory-total-size=1G run

sysbench 0.5: multi-threaded system evaluation benchmark

Running the test with following options:

Number of threads: 16

Random number generator seed is 0 and will be ignored

Threads started!

Operations performed: 131072 (381158.38 ops/sec)

1024.00 MB transferred (2977.80 MB/sec) ##吞吐量

Test execution summary:

total time: 0.3439s

total number of events: 131072

total time taken by event execution: 3.9915s

per-request statistics:

min: 0.00ms

avg: 0.03ms

max: 51.02ms

approx. 95 percentile: 0.00ms ##大约95%的时间分布

Threads fairness:

events (avg/stddev): 8192.0000/1166.77

execution time (avg/stddev): 0.2495/0.02

MySQL数据库测试

sysbench 0.5通过一系列LUA脚本来替换之前的oltp，来模拟更接近真实的基准测试环境。这些测试脚本包含：insert.lua、oltp.lua、parallel_prepare.lua、select_random_points.lua、update_index.lua、delete.lua oltp_simple.lua、select.lua、select_random_ranges.lua、update_non_index.lua，脚本使用方式基本类似。

sysbench 0.5默认使用sbtest库，但是需要自己手工先创建好，也可以使用--mysql-db指定，其他非默认项指定选项：

-mysql-host

-mysql-port

-mysql-socket

-mysql-user

-mysql-password

-mysql-db

-mysql-ssl

prepare

生成表并插入数据，可使用parallel_prepare.lua脚本来并行准备数据。

–db-driver 服务器类型 mysql | drizzle,默认为mysql

–mysql-table-engine 表存数引擎

–myisam-max-rows MyISAM表MAX_ROWS选项(用于大表)

–oltp-table-count 生成表数量[sbtest1、sbtest2...]

–oltp-table-size 生成表的行数

–oltp-secondary ID列生成二级索引而不是主键

–oltp-auto-inc 设置ID列是否自增 on | off，默认为on

shell> cd /db/tool/sysbench-0.5/sysbench

shell> sysbench --test=./tests/db/oltp.lua --mysql-table-engine=myisam --oltp-table-size=100000 --mysql-db=test

--mysql-user=root --oltp-tables-count=10 --mysql-password=oracle --mysql-socket=/tmp/mysql.sock prepare

sysbench 0.5: multi-threaded system evaluation benchmark

Creating table 'sbtest1'...

Inserting 100000 records into 'sbtest1'

Creating table 'sbtest2'...

Inserting 100000 records into 'sbtest2'

Creating table 'sbtest3'...

Inserting 100000 records into 'sbtest3'

Creating table 'sbtest4'...

Inserting 100000 records into 'sbtest4'

Creating table 'sbtest5'...

Inserting 100000 records into 'sbtest5'

Creating table 'sbtest6'...

Inserting 100000 records into 'sbtest6'

Creating table 'sbtest7'...

Inserting 100000 records into 'sbtest7'

Creating table 'sbtest8'...

Inserting 100000 records into 'sbtest8'

Creating table 'sbtest9'...

Inserting 100000 records into 'sbtest9'

Creating table 'sbtest10'...

Inserting 100000 records into 'sbtest10'

也可使用parallel_prepare.lua脚本并行准备测试数据，线程数应该为运行表的倍数

shell> sysbench --test=./tests/db/parallel_prepare.lua --mysql-table-engine=myisam --oltp-table-size=100000

--num-threads=10 --mysql-db=test --mysql-user=root --oltp-tables-count=10 --mysql-password=oracle

--mysql-socket=/tmp/mysql.sock run

sysbench 0.5: multi-threaded system evaluation benchmark

Running the test with following options:

Number of threads: 10

Random number generator seed is 0 and will be ignored

Threads started!

thread prepare8

Creating table 'sbtest9'...

thread prepare1

Creating table 'sbtest2'...

thread prepare0

Creating table 'sbtest1'...

thread prepare5

Creating table 'sbtest6'...

thread prepare3

Creating table 'sbtest4'...

thread prepare6

Creating table 'sbtest7'...

thread prepare9

Creating table 'sbtest10'...

thread prepare4

Creating table 'sbtest5'...

thread prepare2

Creating table 'sbtest3'...

thread prepare7

Creating table 'sbtest8'...

Inserting 100000 records into 'sbtest1'

Inserting 100000 records into 'sbtest9'

Inserting 100000 records into 'sbtest8'

Inserting 100000 records into 'sbtest6'

Inserting 100000 records into 'sbtest7'

Inserting 100000 records into 'sbtest2'

Inserting 100000 records into 'sbtest10'

Inserting 100000 records into 'sbtest4'

Inserting 100000 records into 'sbtest5'

Inserting 100000 records into 'sbtest3'

OLTP test statistics:

queries performed:

read: 0

write: 380

other: 20

total: 400

transactions: 0 (0.00 per sec.)

deadlocks: 0 (0.00 per sec.)

read/write requests: 380 (32.82 per sec.)

other operations: 20 (1.73 per sec.)

Test execution summary:

total time: 11.5785s

total number of events: 10000

total time taken by event execution: 0.1422s

per-request statistics:

min: 0.00ms

avg: 0.01ms

max: 19.55ms

approx. 95 percentile: 0.00ms

http://ww3.sinaimg.cn/bmiddle/671c4d8egw1enjimkujv2g20b40b4b29.gif

Threads fairness:

events (avg/stddev): 1000.0000/2912.74

execution time (avg/stddev): 0.0142/0.04

run

–oltp-tables-count

–oltp-read-only 仅执行SELECT测试 on | off,默认为off

–oltp-dist-type 随机数分布状态。uniform(均匀分布)、gauss(高斯分布)、special(特殊分布)

–oltp-dist-pct 特殊分布的百分比值

–oltp-dist-res 特殊分布的百分比

–oltp-point-selects 单个事务中指定的selec查询个数

–oltp-range-size 范围查询的范围大小，该值应比oltp-table-size小

–oltp-simple-ranges 单个事务中指定的简单范围查询个数

–oltp-sum-ranges 单个事务中指定的SUM范围查询个数

–oltp-order-ranges 单个事务中指定的ORDER范围查询个数

–oltp-distinct-ranges 单个事务中指定的DISTINCT范围查询个数

–oltp-index-updates 单个事务中指定的使用索引更新的个数

–oltp-non-index-updates 单个事务中指定的不使用索引更新的个数

shell> sysbench --test=./tests/db/oltp.lua --num_threads=10 --oltp-table-size=100000

--mysql-db=test --mysql-user=root --oltp-tables-count=10 --mysql-password=oracle run

sysbench 0.5: multi-threaded system evaluation benchmark

Running the test with following options:

Number of threads: 10

Random number generator seed is 0 and will be ignored

Threads started!

OLTP test statistics:

queries performed:

read: 140028 -- 读总数

write: 40008 -- 写总数

other: 20004 -- 其他操作总数(SELECT、INSERT、UPDATE、DELETE之外的操作，例如COMMIT等)

total: 200040 -- 全部总数

transactions: 10002 (234.44 per sec.) -- 总事务数(每秒事务数)

deadlocks: 0 (0.00 per sec.) -- 发生死锁总数

read/write requests: 180036 (4219.99 per sec.) -- 读写总数(每秒读写次数)

other operations: 20004 (468.89 per sec.) -- 其他操作总数(每秒其他操作次数)

Test execution summary:

total time: 42.6626s -- 总耗时

total number of events: 10002 -- 共发生多少事务数

total time taken by event execution: 426.3020s -- 所有事务耗时相加(不考虑并行因素)

per-request statistics:

min: 5.36ms -- 最小耗时

avg: 42.62ms -- 平均耗时

max: 183.44ms -- 最长耗时

approx. 95 percentile: 59.81ms -- 超过99%平均耗时

Threads fairness:

events (avg/stddev): 1000.2000/23.87

execution time (avg/stddev): 42.6302/0.01

clearnup

shell> sysbench --test=./tests/db/oltp.lua --oltp-table-size=100000 --mysql-db=test --mysql-user=root

--oltp-tables-count=10 --mysql-password=oracle cleanup

sysbench 0.5: multi-threaded system evaluation benchmark

Dropping table 'sbtest1'...

Dropping table 'sbtest2'...

Dropping table 'sbtest3'...

Dropping table 'sbtest4'...

Dropping table 'sbtest5'...

Dropping table 'sbtest6'...

Dropping table 'sbtest7'...

Dropping table 'sbtest8'...

Dropping table 'sbtest9'...

Dropping table 'sbtest10'...

可以对数据库进行调优后，再使用sysbench对OLTP进行测试，看看TPS是不是会有所提高。

注意：sysbench的测试只是基准测试，并不能代表实际企业环境下的性能指标。

参见：

整理自网络

Svoid

2014-12-24