gettimeofday performance

I wrote a module client and shared it with the server. In order to speed up the query, I used hash_map. Today, a brother Lu tested that replacing hash_map with map is faster and a little dizzy. Write a paragraph by yourselfCodeUse Visual Studio C ++

An attempt to use LTT to tune the bluetooth module 1 goalThe basic goal is to use LTT to observe the system running status of the bluetooth module during mass data transmission, and strive to find some factors that affect the system performance and

Welcome to this column. This new Linux column demonstrates and compares the performance of the Linux and Windows 2000 operating systems. Columnist ed Bradford compares the operating system-level features, rather than applications, so that people can

Listen to people say gettimeofday in 64bit cache, fast, test under, feel wrong ah.#include #include#include#includeintFoointi) { returni;}Constint64_t Max_count =100000* +;structtimereval {timereval (Const Char*module) {Start_time_=Time (NULL);

Business performance monitoring, at the beginning and end of the business to manage the report, and then the background statistics to achieve monitoring purposes,is one of the more important dimensions in performance optimization. In particular, the

IOS Time Processing Do not have to do the app to deal with time, about the processing of time, there are many doorways, far from a row of API calls, get the current system time so simple. We need to understand the differences between the various

Preface In a single application environment or system with relatively simple business, the bottleneck of system performance problems is often self-evident. The premise for solving the problem is that locating the problem is easier to solve, however,

/* * @FileName: TEST_SLEEP.C * @Author: WZJ * @Brief: * * * @History: * * @Date: February 07, 2012 Tuesday 22:20:00 * */ #include #include #include #include #include #include #include #include #include

Today in the company code to see the use of the time-out function of the Select function as the use of timers, and then organized the following several micro-level Linux timer. In my Ubutu10.10 dual-core environment, the compilation passes.[CPP]View

PHP uniqid function Execution Slow problem Previous time a requirement: a customer submits a simple form to create a scratch card activity H5 page that adapts to the full terminal (Pc,pad,phone), which involves the ability of a customer to generate