yourkit profiler

Ways to call the tracker Copy Code code as follows: $Profiler = $Db-> getprofiler (); Copy Code code as follows: /* How to use the tracker */ Introduce loader class (Auto load Class)Require_once ("zend/loader.php");Introducing a DB class using the Loader classZend_loader::loadclass ("zend_db");Introducing the zend_db of a State deviceZend_loader::loadclass ("Zend_db_statement_pdo");Configure Database connectio

IOS Performance Optimization: Instruments Use combat Instruments is used to analyze the performance of the entire application. Discover many interesting points, as well as performance optimization and some techniques for analyzing performance consumption, summarized below. Instruments Use Tips About instruments official has a very useful user to use guide, of course if not accustomed to the official English can be found here in the text translated version PDF see. Instruments is indeed a very

Instruments has recently been used to analyze the performance of the entire application. Discover a lot of interesting points, as well as performance optimizations and some techniques for analyzing performance consumption, summarized below.Instruments Tips for useAbout Instruments official has a very useful user to use guide, of course if not accustomed to the official English can be found here in the text translated version of PDF see. Instruments is really a powerful tool, It is extremely conv

SQLServerProfiler is used to monitor and analyze deadlocks in two or more SQLServer processes. When a process locks the resources that other processes attempt to lock, a deadlock occurs. For example, the process process1 holds one exclusive lock (X) for table1, and process1 requests one exclusive lock (X) for table2. The process process2 holds one row for table2. Use SQL Server Profiler to monitor and analyze deadlocks in two or more SQL Server proces

Instruments has recently been used to analyze the performance of the entire application. Discover a lot of interesting points, as well as performance optimizations and some techniques for analyzing performance consumption, summarized below.Instruments Tips for useAbout Instruments official has a very useful user to use guide, of course if not accustomed to the official English can be found here in the text translated version of PDF see. Instruments is really a powerful tool, It is extremely conv

deterministic destructor of C + +, it is very convenient to implement a small tool to get the function cost, such as the followingstruct profiler{ Profiler (const char* func_name) { gettimeofday (TV, NULL); m_func_name=func_name; } ~profiler () { struct timeval tv2; Gettimeofday (TV2, NULL); Long cost = (tv.tv_sec-tv.t

Http://www.cocoachina.com/ios/20150225/11163.htmlInstruments has recently been used to analyze the performance of the entire application. Discover a lot of interesting points, as well as performance optimizations and some techniques for analyzing performance consumption, summarized below.Instruments Tips for useAbout Instruments official has a very useful user to use guide, of course if not accustomed to the official English can be found here in the text translated version of PDF see. Instrument

Matlab Speed-up skills (from Matlab Help file)1. Learn to use Profiler first.1.1. Open the profiler.To open the profiler, select View--, profiler from the MATLAB desktop, or type Profiles viewer in the Command Window. The MATLAB Profiler opens.On my machine is: under Matlab Desktop, Desktop->profiler.Under the M file e

top–h–p PID can tell how much the function uses the CPU. In fact, every line of my log prints the thread ID, which is not pthread_id, but is actually the process ID number of the system assigned by the thread. 3. Performance monitoring Although there are many tools that can analyze the performance of C + + programs, most of them run in the program debug phase. We need a means to monitor the program in both the debug and release phases, on the one hand, the bottleneck of the program, and the ea

shows the DMV. It is worth noting that the SYS. dm_tran_locks DMV shows the database lock at the query time point and does not contain any history lock records. It can be understood as the snapshot when the database is locked at the query time. SYS. dm_tran_locks contains two types of information: Information about the resource where the lock is located starting with resource, and information about the applied lock starting with request. 3. For more details, see msdn (http://msdn.microsoft.co

We previously wroteProgramWhen it comes to paging on the Database End, it is generally difficult to implement it. Especially for SQL 2000 databases, you need to write a bunch of SQL statements or write a stored procedure or something yourself. Now, if you use the LINQ query syntax in vs2008, it will become super simple for developers. At the course introduced by LINQ last Friday (November 20), we discussedDelayed executionAndDatabase pageHow is it implemented? I tested it with a small example

Profile and Pstats are the parser for Python code that can objectively look at the quality of the code and the resources used. There is a lot of help in debugging the program.1. Using profile to analyze Python code[Email protected] tmp]# vim profile12.py#!/bin/env python#!-*-Coding:utf-8-*-Import profileDef one (): #定义一个one函数Sum=0For I in range (10000):Sum+=ireturn sumDef ():Sum=0For I in range (100000):Sum+=ireturn sumdef there ():Sum=0For I in range (100000):Sum+=ireturn sumIf __name__== "__ma

Application Center Test-microsoft (part of Visual Studio. NET Enterprise Editions) DevPartner Profiler-compuware Corporation DevPartner Studio-compuware Corporation Aqtime. Net-automatedqa Rational Quantify for WINDOWS-IBM . NET Memory Profiler-scitech Software AB Allocation Profiler (source)-Microsoft ANTS

interesting and sharing.Fetch Call tree and time overheadThe most common way to get the time overhead for code blocks in Java is System.currentTimeMillis() . Popular class libraries such as Apache and guava have encapsulation class StopWatch for the ability to acquire time overhead.There is no common encapsulation of the capture call tree. A recommended practice is to give each block of code a unique tag in a single call, which can reflect the nesting, ordering, and so on between blocks of code

Instruments has recently been used to analyze the performance of the entire application. Discover a lot of interesting points, as well as performance optimizations and some techniques for analyzing performance consumption, summarized below.Instruments Tips for useAbout Instruments official has a very useful user to use guide, of course if not accustomed to the official English can be found here in the text translated version of PDF see. Instruments is really a powerful tool, It is extremely conv

0.000 0.571 0.000 timers.py:92 (get_number) 1 1.055 1.055 1.626 1.626 timers.py:96 (expens ive_function) 1 0.000 0.000 0.000 0.000 {method ' disable ' of ' _lsprof. Profiler ' Objects}As you can see, it gives the number of calls to different functions, but it misses some key information: Which function makes the run so slow?However, this is a good start for basic optimization. Sometimes you can even find a solution with less effort. I often use it to

' coverage analysis has been closed. } Unset ($result); Unset ($apiModel); ?> Browser results: 2, PHP script analysis Xdebug PHP Script Analysis is practical, it can help us analyze the bottleneck of the code and slow down the problem of performance, to optimize the code to provide a feasibility reference. A, the configuration involved xdebug.profiler_enable //This configuration defaults to 0, to open, set to not 0 after, that is, open Profiler