我将使用 flexAsynch 对 MySQL Cluster 进行基准测试这指南，详情如下：
mkdir /usr/local/mysqlc732/
cd /usr/local/src/mysql-cluster-gpl-7.3.2
cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysqlc732/ -DWITH_NDB_TEST=ON
make
make install
一切正常，直到这一步：
# /usr/local/mysqlc732/bin/flexAsynch -t 1 -p 80 -l 2 -o 100 -c 100 -n
FLEXASYNCH - Starting normal mode
Perform benchmark of insert, update and delete transactions
1 number of concurrent threads
80 number of parallel operation per thread
100 transaction(s) per round
2 iterations
Load Factor is 80%
25 attributes per table
1 is the number of 32 bit words per attribute
Tables are with logging
Transactions are executed with hint provided
No force send is used, adaptive algorithm used
Key Errors are disallowed
Temporary Resource Errors are allowed
Insufficient Space Errors are disallowed
Node Recovery Errors are allowed
Overload Errors are allowed
Timeout Errors are allowed
Internal NDB Errors are allowed
User logic reported Errors are allowed
Application Errors are disallowed
Using table name TAB0
NDBT_ProgramExit: 1 - Failed
ndb_cluster.log：
警告——无法为 127.0.0.1 处的 API 分配节点 ID。返回错误：“未找到 mysqld(API) 的可用节点 ID。”
我也用 重新编译了-DWITH_DEBUG=1 -DWITH_NDB_DEBUG=1。如何flexAsynch在调试模式下运行？
# /usr/local/mysqlc732/bin/flexAsynch -h
FLEXASYNCH
Perform benchmark of insert, update and delete transactions
Arguments:
-t Number of threads to start, default 1
-p Number of parallel transactions per thread, default 32
-o Number of transactions per loop, default 500
-l Number of loops to run, default 1, 0=infinite
-load_factor Number Load factor in index in percent (40 -> 99)
-a Number of attributes, default 25
-c Number of operations per transaction
-s Size of each attribute, default 1
(PK is always of size 1, independent of this value)
-simple Use simple read to read from database
-dirty Use dirty read to read from database
-write Use writeTuple in insert and update
-n Use standard table names
-no_table_create Don't create tables in db
-temp Create table(s) without logging
-no_hint Don't give hint on where to execute transaction coordinator
-adaptive Use adaptive send algorithm (default)
-force Force send when communicating
-non_adaptive Send at a 10 millisecond interval
-local 1 = each thread its own node, 2 = round robin on node per parallel trans 3 = random node per parallel trans
-ndbrecord Use NDB Record
-r Number of extra loops
-insert Only run inserts on standard table
-read Only run reads on standard table
-update Only run updates on standard table
-delete Only run deletes on standard table
-create_table Only run Create Table of standard table
-drop_table Only run Drop Table on standard table
-warmup_time Warmup Time before measurement starts
-execution_time Execution Time where measurement is done
-cooldown_time Cooldown time after measurement completed
-table Number of standard table, default 0
答案1
因为flexAsynch使用异步 NDB API，所以我必须添加一个空闲槽config.ini：
[MYSQLD]
NodeId: 13
Hostname=10.2.3.201
然后重新启动管理节点和所有数据节点：
Connected to Management Server at: 10.2.3.201:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=3 @10.2.3.200 (mysql-5.5.30 ndb-7.2.12, Nodegroup: 0, Master)
id=4 @10.2.3.202 (mysql-5.5.30 ndb-7.2.12, Nodegroup: 0)
[ndb_mgmd(MGM)] 2 node(s)
id=1 @10.2.3.201 (mysql-5.5.30 ndb-7.2.12)
id=2 @10.2.3.203 (mysql-5.5.30 ndb-7.2.12)
[mysqld(API)] 9 node(s)
id=5 @10.2.3.201 (mysql-5.5.30 ndb-7.2.12)
id=6 @10.2.3.201 (mysql-5.5.30 ndb-7.2.12)
id=7 @10.2.3.201 (mysql-5.5.30 ndb-7.2.12)
id=8 @10.2.3.201 (mysql-5.5.30 ndb-7.2.12)
id=9 @10.2.3.203 (mysql-5.5.30 ndb-7.2.12)
id=10 @10.2.3.203 (mysql-5.5.30 ndb-7.2.12)
id=11 @10.2.3.203 (mysql-5.5.30 ndb-7.2.12)
id=12 @10.2.3.203 (mysql-5.5.30 ndb-7.2.12)
id=13 (not connected, accepting connect from 10.2.3.201)
重新运行flexAsynch，现在它运行正常：
insert average: 59674/s min: 59590/s max: 59759/s stddev: 0%
update average: 60077/s min: 58445/s max: 61709/s stddev: 2%
delete average: 137487/s min: 134205/s max: 140770/s stddev: 2%
read average: 100763/s min: 98413/s max: 103013/s stddev: 2%
NDBT_ProgramExit: 0 - OK