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, our test destination/ Global/oradata is built on one of the LUNs, uses 8 disks, and Raid10,stripe (that is, Ncol) is set to 4 with Veritas Volum Manager. bonnie++-d/global/oradata-s 8192-m d2new-u Oracle Using uid:1001, gid:101. Writing with PUTC () ... done Writing Intelligently...done Rewriting...done Reading with getc () ... done Reading Intelligently...done Start ' Em...done...done...done ... Create files in sequential order...done. Stat files in sequential order...done. Delete

Label:Build table Insert test dataA> CREATE TABLE test (id int, num int);Query OK, 0 rows affected (0.53 sec) a> INSERT into test values ();Query OK, 1 row affected (0.01 sec) a> INSERT into test values (2,2);Query OK, 1 row Affected (0.00 sec) a> INSERT into test values (3,3);Query OK, 1 row affected (0.01 sec) A> sel

column level. Host permission table: Use the database permission table to control database-level operation permissions on a given host. This permission table is not affected by the GRANT and REVOKE statements. Case analysis: 1. create and authorize a user (root user) [Root @ mysrv ~] # Mysql-u root-poracle Mysql> select version () \ g + ------------------------------------------- + | Version () | + ------------------------------------------- + | 5.6.25-enterprise-defined cial-advanced-lo

|+--------------------+5 rows in set (0.00 sec)mysql> use mydbtwo;Database changedmysql> show tables;Empty set (0.00 sec)mysql> source c:/all.sqlQuery OK, 0 rows affected (0.00 sec)Query OK, 0 rows affected (0.00 sec)Query OK, 0 rows affected (0.00 sec)Query O

system: Server # netserverStarting netserver at port 12865Starting netserver at hostname 0.0.0.0 port 12865 and family AF_UNSPEC The netperf tool may require multiple sampling. most basic tests are a standard throughput test. in the following example, a 30-second TCP throughput sample is executed from the client in a LAN environment: The output shows that the network throughput is about 89 mbps. The server (192.168.1.215) and client are in the same LAN. This is very good for 100 mbps networks.

A:array (4) {["api/index/index"] + = string (3) "226" ["main/index/index"] = + string (3) "227" ["main/index/main"] = > String (3) "228" ["/main/index/test"] + string (3) "229"}b:array (+) {["/main/index/test"] = + int (3) ["/main /index/liebiao/text/%e5%88%97%e8%a1%a8%e6%b5%8b%e8%af%95 "] = + string (7)" 0-sec-0 "["/main/index/test/text/%e7% a8%8e%e6%94%b6%e5%88%86%e6%9e%902 "] = + string (7)" 0-sec-1 "["/

tested 691180 data records reserve sufficient memory space for each insert of a large amount of data. For the deque storage allocation assumption, observe the memory allocation graph and the previous graph in this test. We need to further quantify this test. How can we improve the performance of memory allocation? The following figure shows that the capacity increases as data increases: When adding data, the efficiency of adding the capacity is basically the same in the execution of ve

Label:Database version:[Email protected]mysqltest ~]# mysql-u root-p123456Welcome to the MySQL Monitor. Commands End With; or \g.Your MySQL Connection ID is 389805Server version:5.1.73-community MySQL Community Server (GPL)Copyright (c) and/or, Oracle, its affiliates. All rights reserved.Oracle is a registered trademark of the Oracle Corporation and/or itsAffiliates. Other names trademarks of their respectiveOwners.Type ' help ', ' or ' \h ' for help. Type ' \c ' to clear the current input state

Tags: random 5.4 Good handle OBA Rev calculation option occupiedMySQL performance index calculation and optimization method1 QPS calculation (number of queries per second)For MyISAM engine-based DB Mysql> show global status like ' questions '; +---------------+------------+ | variable_name | Value | +---------------+------------+ | Questions | 2805815665 | +---------------+------------+ 1 row in Set (0.00 sec) mysql> show global status like '

Tags: 646Day02The MySQL key value (key) # #设置在字段上, which constrains how to assign a value to a field. Normal indexUnique Indexes UniquePrimary KEY Primary KeyFOREIGN key foreign keyFull-Text Index fulltext +++++++++++++++++++++++++++++++++++1.1 Use of index for normal indexes1.1.1 What is an index?Equivalent to "book catalogue"Advantages and disadvantages of 1.1.2 indexesPros: Speed up your query historyCons: Accounting for physical storage space, slowing down write speed (insert update delete)

{Code ...} there are two arrays above, now, you need to know which of the preceding statements are repeated. For example, if the key in the array permission is MainIndextestb, and the key in the menu is MainIndextest, the second statement is repeated. For example, in the array permission key is Ma... A:array(4) { ["Api/Index/index"] => string(3) "226" ["Main/Index/index"] => string(3) "227" ["Main/Index/main"] => string(3) "228" ["/Main/Index/test"] => string(3) "229"}B:array(22) { ["/Main/

workstations and a high-load server (such as file or web server. the netperf tool runs in client/server mode. To complete a basic controllable throughput test, the netperf server must first run on the server-side system: Server # netserverStarting netserver at port 12865Starting netserver at hostname 0.0.0.0 port 12865 and family AF_UNSPEC The netperf tool may require multiple sampling. most basic tests are a standard throughput test. in the following example, a 30-second TCP throughput sample

Tags: mysql four kinds of transaction isolation mechanismThe MySQL standard defines 4 isolation levels that define which changes within and outside a transaction are visible and which are not.Low isolation levels generally support higher concurrency and lower system overhead.Isolation levels from low to High: READ UNCOMMITTED First: READ UNCOMMITTED (read UNCOMMITTED content)At this isolation level, all transactions can see the execution results of other uncommitted (commit) transactions.This is

:/system.slice/zabbix_server.service nbsp;├─22316/usr/local/zabbix/sbin/zabbix_server ├─22318/usr/local/zabbix/ Sbin/zabbix_server:configuration Syncer [Waiting sec for processes] ├─22319/u Sr/local/zabbix/sbin/zabbix_server:db watchdog [Synced Alerts config in 0.001065 sec, idle sec] N Bsp ├─22320/usr/local/zabbix/sbin/zabbix_server:poller #1 [go

-------------------------------------------------------------------------------Current SQL:Client details:O/S info: user: weblogic, term: unknown, ospid: 1234Machine: qmweb86 program: JDBC Thin ClientApplication name: JDBC Thin Client, hash value = 2546894660Current Wait Stack:0: waiting for 'SQL * Net message from client'Driver id = 0x74637000, # bytes = 0x1, = 0x0Wait_id = 55 seq_num = 56 snap_id = 1Wait times: snap = 4.499210 sec, exc = 4.4

Affected (0.00 sec) Query O K, 0 rows Affected (0.00 sec) Query OK, 0 rows Affected (0.00 sec) Query OK, 0 rows Affected (0.00 sec) Query OK, 0 rows Affe CTED (0.00 sec) Query OK, 0 rows Affected (0.00 sec) Query OK, 0 rows Affec

storage engine, allow MySQL to handle locked processing directly to the storage engine itself, holding only write_allow_ in MySQL The lock of the write type. Since the locking mechanism used by the MyISAM storage engine is entirely a table-level lock provided by MySQL, we will use the MyISAM storage engine as the sample storage engine to illustrate some of the basic features of table-level locking. Because, in order to make the example more intuitive, I'll use the display to add a lock to the

Original: SQL Server R2 Performance counter detailed list (i)SQL Server Backup Device counters:Can monitor the Microsoft SQL Server backup device for backup and restore operations SQL Server Backup Device counters Description Device Throughput Bytes/sec The throughput (in bytes per second) of the read and write operations used by a backup device to back up or restore the database. Th

The IIS Global active flushed Entries active flushed Entries is a cached file handle that closes after the current transfer is complete. The IIS Global object.Web Anonymous users/sec The number of anonymous connections that users make through the Web service.the number of BLOB cache refreshes that IIS Global blob cache flushes since the server started.Total number of successful lookups in the IIS Global blob cache Hits blob caches.IIS Global blob cach

table2.4.2 alter Modify table (column) field2.4.3 Delete drop table (column) field2.4.4 Rename renaming table names2.5 Create new table with existing data3. Operation and management of data3.1 Add data (Increase)3.2 Deleting data (delete)3.3 Modifying data (change)3.4 Query data (check)4. Management view1. Database management1.1 CREATE Database Create Database Firstdb; 1.2 Show view all databases mysql> show databases; +--------------------+ | Database |