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How to Use the Smem command line to check the memory usage on Ubuntu To check the memory usage in Ubuntu Linux, we can install and use the Smem memory reporting tool to display the memory usage in Ubutnu Linux. Smem is a command line tool used to

MySQL stress testing tool bitsCN.com MySQL stress testing tool mysqlslap -- create-schema = example -- query = "SELECT * FROM group_message force index (group_message_author_subject) WHERE author = '3' subject LIKE 'weiurazs % '"-- iterations = 10000

First, MySQL common configuration All of the following configuration parameters are based on a server with 32G of memory 1. Open a separate table spaceinnodb_file_per_table = 12, the MySQL service allows the maximum number of

Mysqlslap is MySQL's own benchmark tool, the advantages: query data, simple syntax, flexible and easy to use. The tool can simulate multiple clients concurrently issuing query updates to the server. The performance test data is given and the

Mysqlslap is MySQL's own benchmark tool, the advantages: query data, simple syntax, flexible and easy to use. The tool can simulate multiple clients concurrently issuing query updates to the server. The performance test data is given and the

A test Case1 Write stress tests:Use case: Automatically create table write 1 million data client concurrent 500 test InnoDB storage EngineCommand: Mysqlslap--auto-generate-sql-add-autoincrement-a--number-of-queries=1000000--number-char-cols=4--

The combination of LANMP and LAMP on production servers has been stable for a while. However, I have been trying to perform stress tests on MYSQL for many times because of the high concurrency of MYSQL. I just saw an article about MYSQL stress

In fact, the MySQL test is not so complex, in addition to some commonly used select\insert\update\deletc these, in fact, testing his concurrency is the most important. For example, in connection with the number of 1K, the concurrent volume can meet

Some time ago to do some performance testing about the app, first some basic knowledge of memory.1. Memory Name:VSS = Virtual Set size = Memory consumed (contains memory consumed by shared libraries)Rss-resident Set Size actually uses physical

1. Database version Leo1@leo1>select * from V$version; BANNER -------------------------------------------------------------------------------- Oracle database11g Enterprise Edition release 11.2.0.1.0-64bit Production Pl/sql

@Test public void Testquerypage () { QueryBuilder orderquery = Querybuilders.boolquery () . Must ( Querybuilders.matchquery ("OrderType", "RO")); page page = Orderrepository.search (orderquery, Pagerequest.of (0, 1)); SYSTEM.OUT.PRINTLN

1. Purpose and significanceThis is the optimization of the evaluation method.The importance of RAM as the place where all content is loaded when the hand is running is self-evident.Knowing the amount of RAM left on the phone after it is turned on

Server Describes the following configuration settings and what to consider when using: • Similarity mask • Lightweight pool • Max asynchronous IO max number of worker threads • Memory • Priority promotion • Set working set size SQL Server can

Ora-27037: unabletoobtainfilestatusLinux-x86_64Error: 2: Nosuchfileordirectory why is there no archive? Who deleted it? Ora-27037: unable to obtain file statusLinux-x86_64 Error: 2: No such file or directory why is there No archive? Who deleted it?

Look at the development process, often to use the amount of memory to optimize the program.To view the application's commands: adb shell ProcrankShown below:PID Vss Rss Pss Uss cmdline79560K 74736K 49624K 43604K system_server14335 55776K 55740K 31308

Android Memory limitJava virtual machines have a limit on memory usageADB shell enters the phone, this parameter is recorded in/system/build.prop, if you want to view directly can use ADB shell GetpropMaximum memory limit for a single application,

1. View the log information in the IDEWhen the program runs garbage collection, a log message is printed with the following format:D/DALVIKVM: , , , Gc_reason represents the cause of garbage collection and the current collection type, including the

If you suspect that computer hardware is the main cause of affecting the performance of SQL Server, You can monitor the load of the corresponding hardware through SQL server performance monitor to confirm your guesses and identify system bottlenecks.

Application commands ADB shell procrank Note: VSS-virtual set size virtual memory consumption (including memory occupied by shared libraries) RSS-resident set size actually uses physical memory (including memory occupied by shared libraries)

MySQL Study -- MySQL stress testing tool mysqlslap, -- mysqlmysqlslapMySQL Study-MySQL stress testing tool mysqlslap1. Introduction to MysqlslapMysqlslap is a benchmark testing tool provided after MySQL5.1. It is similar to the Apache benchmark load