java performance profiling

possible with a certain workload.? CPU utilization is only a symptom, not a good measurable goal.? The increase in throughput can be seen as a byproduct of performance optimizations that allow the server to execute more queries per second. Because the query execution takes less time per second. (Throughput is the inverse of performance: number of queries per unit of time, QPS,QPM, etc.)Principle two: Unabl

C + + Performance profiling (iv): Inheritance impact on performance, anatomy inheritance (This editor has a problem today, all my format is messed up, sorry!) ） Inheritance is an important feature of OOP. Although many peers in the industry do not like inheritance, the correct use of inheritance is an important design decision at the application and architectur

thread profiling is mainly used to identify memory problems in multi-threaded applications. It generally includes three aspects: Status changes of a thread Deadlock Distribution of the state of a thread during its life cycle Profiling startup settings: similar to the run and debug startup settings in eclipse, you also need to perform startup settings before

In the development process of Java program, it is unavoidable to encounter memory usage, performance bottleneck and so on. javaprofiler Tools Help developers locate these issues quickly and effectively, making them an important tool in the Java development process. At present, there are many kinds of JavaProfiler tools on the market, this article will briefly int

the use of virtual functions, I specially prepared ctest for ADDREF2,DOIT2,RELEASE2, three identical but non-virtual functions, To follow a major principle of performance testing: compare Apple to Apple.I set the loop to 100,000, and the test results showed that the LOOP2 was about 20% lower than the LOOP1 speed. The only difference from the generated code is that the CTest constructor calls the constructor of the compiled auto-generated ITest1. This

Introduction to MySQL performance optimizationWhat is performance optimization? In fact, we tend to define from a broad sense that the non-functional optimizations of a MySQL system will be considered performance optimizations, such as the stability of the database server, the number of SQL queries executed per second, the scalability of the system, CPU utilizati

, measuring aggregated information rather than the target activity itself; need to locate and optimize subtasks Principle: Unable to measure can not effectively optimize 3.1.1 Optimized by profiling Profiling: The main way to measure and analyze where time is spent 1, measuring the time spent on the task, 2, the results of statistics, sequencing (important front row) You can group similar tasks together to

-tools-common on Ubuntu, linux-base on Debian, perf- Utils on ArchLinux, or perf on Fedora. Then you can profiles the system like:$ perf record-a-G sleep # Record system for 10s# display reportThat would display this handy curses interface in basically any hardware platform, which can use to drill down to the A Rea of interest.See Brendan Gregg's perf examples for a further up to date and detailed exploration of perf ' s capabilities.Other system wide profi