golang profiling

Directory I. Optimization Overview Ii. query and index optimization Analysis 1. performance bottleneck locating Show command Slow query log Explain analysis Query Profiling Analysis Query 2 Index and Query Optimization Iii. Configuration Optimization 1) max_connections 2) back_log 3) interactive_timeout 4) key_buffer_size 5) query_cache_size 6) record_buffer_size 7) read_rnd_buffer_size 8) sort_buffer_size 9) join_buffer_size 10) table_cache 11) max_

Download and activation: http://download.csdn.net/detail/lone112/6734291 offline activation red Gate Software Co., Ltd. in the UK recently released ants performance Profiler 8 Beta, which supports profiling of Web requests, asynchronous code, and Windows store apps. This version also supports SharePoint 2013 and a new timeline, which allows developers to monitor not only the performance of the application, but also the specific areas they want to chec

MySQL profiling Performance Analysis Tool Brief description: MySQL Query Profiler is a very convenient Query diagnostic and analysis tool that can be used to obtain the consumption of multiple resources in a Query throughout the execution process, such as CPU, IO, IPC, SWAP, page faults, context switche, and so on. The location of the functions called by MySQL in the source file during Query execution can also be obtained. Through slow log query, we c

MySQL profiling performance analysis tool, mysqlprofiling Brief description: MySQL Query Profiler is a very convenient Query diagnostic and analysis tool that can be used to obtain the consumption of multiple resources in a Query throughout the execution process, such as CPU, IO, IPC, SWAP, page faults, context switche, and so on. The location of the functions called by MySQL in the source file during Query execution can also be obtained. PassSlow log

I. Overview1, Version supportShow profiles is added after 5.0.37, to use this feature, make sure the version is after 5.0.37.To view the database version:Select version ();2. View turn on off and default settings observation count like ' profiling% ';OrSELECT @ @profiling;　　3. Open and Close parameters (parameters are session-level parameters, only valid for current session)To open the operation:Set

####################Python脚本性能剖析###################Cprofile/profile/hotshot is used to count statistics on the frequency and time of execution of each part of a Python script, pstats can be used to format this informationCProfile, which is a C extension, has a small overhead and is suitable for profiling a long-running Python program, recommended for use with this moduleProfile, a pure Python module, has significant overhead, but it's relatively easy

Tags: mysql optimization profilingThe profiling of MySQL optimization toolAfter using the slow query log to parse out the slow query statement, analyze the performance of the statement with profiling after optimization.View slow query settingsMysql> Show variables like "%slow%";+---------------------+---------------------------------+| variable_name | Value |+---------------------+--------------------------

Before there is a failure problem, look at the database slow query log, from the log and stored procedure itself directly analysis, can not know the problem point, and then through profiling to analyze, recorded as follows:0, check the slow query log, found that there is a large number of execution waits 650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M00/7F/F4/wKioL1cy1Jzzfw_ 4aaa3zxuwyso212.png "title=" 02.png "alt=" Wkiol1cy1jzzfw_4aaa3zxuwy

Application profiling Using profiling tools to look for potential bottlenecks during development can significantly reduce the number of problems that show up later. with the right tools and training, this can become a regular part of the development process without adding too much overhead. Profilers retrieve performance and memory information from. Net Applications in one of three ways: • Sample Based

Label:MySQL comes with profiling performance analysis tool1. Show variables like '%profiling% ';(View profiling information) www.2cto.com2. Set profiling=1; (Turn on profiling)3. Execute SQL query Example: Select Goods_name from Ecs_goods where goods_id 4. Show profile for q

The two most common bottlenecks for MySQL databases are CPU and I/O bottlenecks, which typically occur when the CPU is saturated, when the data is loaded into memory or read from disk. Disk I/O bottlenecks occur when the load data is much larger than the memory capacity, if the application is distributed over the network, then when the query volume is quite large, then the flat bottleneck will appear on the network, we can use Mpstat, Iostat, SAR and vmstat to view the performance status of the

Profile the word has (1) shape, outline, appearance, image (2) Impression, Image (3) profile (4) profiles, side-view and other meanings. This word is also very common in computer and communication protocols. Here is a description of it in the field of software system performance analysis.Translation of Wikipedia (Http://en.wikipedia.org/wiki/Profiling_ (computer_programming)) on Profiling explanation: In the field of software engineering,

MySQL profiling usage, mysqlprofiling The two most common bottlenecks of MySQL databases are the CPU and I/O bottlenecks. When the CPU is saturated, it usually occurs when the data is loaded into the memory or the data is read from the disk. The disk I/O bottleneck occurs when the loading data is much larger than the memory capacity. If the application is distributed on the network, when the query volume is large, the ping bottleneck will appear on th

####################Python脚本性能剖析###################Cprofile/profile/hotshot is used to count statistics such as how often each part of a Python script runs and how long it takes. Pstats can be used to format this informationCProfile is a C extension. Low overhead, suitable for parsing long-executed Python programs, recommended for use with this moduleProfile Pure Python module, there is significant overhead, but want to extend the relatively easyHotshot, experimental C module. Primary focus on o

Tags: MongoDB profiling ProfilerMongoDB Database ProfilingMongoDB Profiler is a system that captures database execution activity, which can help identify slow queries and operations.Profiling levelThe available capture levels have the following meanings:level Set0 disable1 enabled, only slow operation is logged2 Enable, log all operationsView Profiling level> Db.getprofilinglevel ()Enable Profiler> Db.setpr

Mysql built-in profiling performance analysis tool 1. show variables like '% profiling %'; (view profiling information) www.2cto.com2. set profiling = 1; (enable profiling)3. Run the SQL query example: select goods_name from ecs_goods where goods_id 4. show profile for query

Label:The use of MySQL ProfilingIn the first section of this chapter we also mentioned the performance bottleneck of using the query Profiler to locate a query, and here we describe in detail the purpose of Profiling and how to use it. To optimize a query, we need to know exactly where this query's performance bottleneck is, is it consuming too much CPU, or does it require too many IO operations? To be able to understand this information clearly, in M

1. Show variables like '%profiling% ';(View profiling information)2. Set profiling=1; (Turn on profiling)3. Execute SQL query Example: Select Goods_name from Ecs_goods where goods_id 4. Show profile for query 4;The format of show profile is as follows:SHOW profile [Type [, type] ...] [for QUERY N] [LIMIT row_count [off