postgresql performance metrics

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Linux memory performance metrics, CPU performance metrics

main pages interrupt means more access to the diskThe indicator can be viewed via the SAR command# sar-b 1 3pgpgin/pgpgout is the swap-in and swap out of memoryFault page breakmajflt main missing pages interruptvmstat command can also view some memory information# vmstat 1 5 Memory part is the RAM informationSi/so is swapped-in swap outSupplemental skillsWhen the top command is executed, the SWAP column is usually not displayed and you need to specify the displayIn the top interface, click 'f',

MySQL Performance bottleneck analysis, performance indicators, metrics collection methods and performance analysis tuning tools

Label:This paper mainly explains MySQL performance bottleneck analysis, performance indicators, performance index information collection tools and methods, analysis of the use of tuning tools.The article has not been completed, the following is an outline.Performance bottlenecks:SlowPerformance Index:Frequency of VisitsNumber of concurrent connectionsCache Hit Ra

Web performance testing Basic performance metrics

the larger the CTR, the greater the pressure on the server. CTR is just a performance reference, and it's important to analyze the impact of clicks. Note that the Click here does not refer to a single click of the mouse, because in a single click, the client may make multiple HTTP requests to the server.8. Resource utilizationRefers to the use of different system resources, such as server CPU utilization, disk utilization, and so on. Resource utiliza

Java Program Performance optimization-performance metrics

higher the speedup, the more obvious the optimization effect. The Amdahl law gives the relationship between speedup and system parallelism and number of processors. Assuming that the speedup ratio is speedup, the program that must be serialized within the system is the F,CPU processor number n, which is:speedup≤1/(f+ (1-f)/n) Example: under a dual-core processor, a program execution step consists of 5 steps, of which 3 steps must be serial, so its serialization weight is f=3/5=0.6,n=2. Accordin

Web performance testing Basic performance metrics

Resource utilizationRefers to the use of different system resources, such as server CPU utilization, disk utilization, and so on. Resource utilization is the main basis for analyzing system performance Index and improving performance, so it is the focus of Web performance testing work.Resource utilization is mainly for Web server, operating system, database serve

What are the common performance metrics in server performance testing?

."Intermediate response time" is the median response time for a period of time, 50% response time, and half of the server response time is below that value and the other half is above that value."90% response Time" 90% of transaction response time is smaller than this value over time. Response to the overall response speed, and the 10% timeout rate above that value. is one of the important indicators used to assess system capacity.Minimum response time for the Min. reflects the fastest processin

Architecture High-performance Web site tips (i)--understanding metrics to measure website performance

户平均请求等待时间Time per request:14.972[MS] (mean, across all concurrent requests)#服务器平均请求处理时间Transfer Rate:20.71[kbytes/sec] Received#服务器的数据传输速度 (The data is the server egress bandwidth in the extreme case)Connection Times (MS)minMEAN[+/-SD]Median MaxConnect: + $ 4.8 $ -Processing: A $ 5.0 $ -Waiting: + $ 4.9 $ -Total:Bayi the 9.7 the thePercentage of theRequests servedwithin aCertain Time(MS) -% the #50% of requests completed within 92

Those performance parameter metrics for Linux servers

Those performance parameter metrics for Linux serversA Linux operating system-based server runs at the same time, it will also characterize a variety of parameter information. In general, OPS and system administrators are extremely sensitive to these data, but these parameters are also important to developers, especially when your program is not working properly, and these clues often help to locate the tra

"Performance Tuning" Oracle AWR reporting metrics full resolution __oracle

"Performance Tuning" Oracle AWR reporting metrics full resolution What is AWR? ===================================================================================================== AWR (Automatic workload Repository) A bunch of historical energy data, placed on the Sysaux table space, AWR and Sysaux are all 10g, are the key features of Oracle tuning; About 1999 years began to develop, has been 15 year

Monitor the performance of your application using metrics

systems.In Java there is an open source project called Metrics, which captures the JVM and application-level performance parameters, and his author, Coda Hale, describes what Mertics is and why metrics is necessary in an application system, Videos and speeches can be downloaded separately on YouTube and SlideShare. The project that has been ported in. NET is cal

Performance metrics testing for IPs products

Performance metrics testing for any IPs product must take into account the impact of three factors: network performance, security accuracy, and security efficiency. January 25, 2003 is not a special day, but the day should be remembered by those who design and manage enterprise-class networks. This day, the Ms-sql Slammer virus in Greenwich Mean Time 5:30, maki

Disk I/O performance metrics and tuning method _ MySQL

Disk I/O performance metrics and tuning method bitsCN.com Before introducing the disk I/O monitoring command, we need to understand the disk I/O performance monitoring metrics, as well as the disk performance of each indicator. Disk I/O

Python's posture to analyze nmon and get performance metrics data is like this

a backgroundin a performance test or Linux Server operations, will involve the use of system resources monitoring, in addition to common system commands (such as top,iostat,free, etc.), a more comprehensive resource data monitoring tool is NMON, by running NMON on the server, You can periodically monitor the hardware resources and generate the collected data into a . NMON file. So, the question is, how do you parse the. Nmon file and get the

Use Windows performance monitor to monitor common SQLServer metrics

As mentioned in the above article, Win's Performance Monitor is an essential tool for monitoring database performance. Next I will introduce some common monitoring metrics, which are nothing more than disks, CPUs, As mentioned in the above article, Win's Performance Monitor is an essential tool for monitoring database

Python implementation parse LR analyse result and generate summary performance metrics Data Report

a preface In the performance test framework development, you need to process the completed test report of the scene, summarize the performance metrics data that you are following in the report, and then write the report and send the relevant person a message. So, one of the steps is how to capture the data from the test report (e.g.,TPS, Response time, number of

About Web page performance measurement metrics and recommendations

First look at a diagram:Note: The right image is often used in our workWhat are the Web performance metrics we focus on?1. Page load timeThe time to load from the page to the page onload event firing. In general, the OnLoad trigger represents the CSS,JS directly from the HTML reference, and the picture resource is fully loaded.2. Full page load timeFull page load time refers to the time that the network act

Linux System performance Metrics sampling script

Free> $filenameOfFree #nohupCat/proc/meminfo > $filenameOfMemInfo #nohupUptime> $filenameOfUptime # inchEvery day at April, run the shell script at1min past each hour.#1* *4*/root/shift_my_times.SH#1* *4*/home/pset/performancelog/collectlog.SHThe crontab is set to start hourly and collects data according to the frequency set in the script:1 0,4,Ten- at*4*/home/pset/performancelog/collectlogs.SH* * *4*/usr/local/bin/mycheckpoint--user=root--password=1111--socket=/redmine/mysql/tmp/mysql.sock--da

SQL Server Automation Operations series-Monitoring Performance metrics script (Power Shell)

Implementation method1, SQL Agent configuration job method implementation2. Scheduled TasksThe above two configurations, can be flexibly mastered, the operation is quite simple, if not, can self Google. Of course, if you do not want to intervene in the normal production system, you can add a server dedicated to automating operational inspection to enable remote monitoring.Subsequent articles will analyze remote calls to the power shell and be able to implement the current state of the incident,

Website Performance Optimization Metrics

number of vehicles on the highway, the response time is the speed. When vehicles are scarce. When vehicles are very small, the speed is very fast, but the high rate of receipt is correspondingly low; with the increase of the number of highway trucks, the speed is slightly affected, but the high-speed fee received increases rapidly, and as the vehicle continues to increase, the speed becomes more and more slow, and the expressway is getting more and more fast. If the flow of traffic continues to

Disk I/O performance monitoring metrics and tuning methods

Before we introduce the disk I/O monitoring commands, we need to understand the metrics for disk I/O performance monitoring, and the performance of some aspects of the disk revealed by each indicator. Indicators for disk I/O performance monitoring mainly include:Indicator 1: Number of I/Os per second (IOPS or TPS)For d

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