aix performance monitoring commands

queue.%UTIL:I/O requests account for the percentage of the CPU, the higher the ratio, the more saturated the description.1. When the value of Avgqu-sz is low, the equipment utilization is higher.2. When the value of%util is close to 1%, it indicates that the device bandwidth is already fullTo determine the system bottleneck, it is sometimes necessary to combine several SAR command options.Suspected CPU bottlenecks, sar-u and sar-q can be used to viewSuspect memory bottlenecks and can be viewed

Linux performance testing and monitoring sar commands Sar (System Activity Reporter System Activity Report) is one of the most comprehensive System performance analysis tools on Linux. It can report System activities from multiple parties, including: file read/write, system call usage, disk I/O, CPU efficiency, memory

In Web site performance optimization, we often have to check the various indicators of the server in order to quickly find the black sheep. In most cases, we use monitoring software such as cacti, Nagois, or Zabbix, but this kind of software is cumbersome to install, and in a small server we want to find out as quickly as possible, or use some of the commands tha

Linux system performance monitoring common commands Blog Categories:Technical methods First, Linux server performance concerns 1) CPU -> load: The sum of statistics that represents the tasks that the CPU is processing and waiting to process over a period of time, simple to understand the ratio of the number of threads

Linux performance monitoring and Common commands As a DBA, it is also necessary to have certain Linux server performance monitoring knowledge. Sometimes Oracle database performance problems are caused by server

The basic functions of the top command and ps command are the same, displaying the current process of the system and other conditions. However, the top command is a dynamic display process, that is, you can press the key to continuously refresh the current state. Such? The front-end executes this command, and it will exclusively occupy the front-end until the user terminates the program. More accurately, the top command provides real-time monitoring o

Analyzer or packet sniffer program-to capture or filter TCP/IP packets received or transferred from a specific interface on the network. It also saves the captured package to a folder. Tcpdump can be used on all major Linux distributions.5.netstat--Network StatisticsNetstat is a command-line tool for monitoring incoming and outgoing network packet information and interface information statistics. It is useful for system administrators to use it to mo

1. Display Server Status: Db.serverstatus () 2. MongoDB can monitor data through profile to optimize it. Check whether the profile function is currently turned on: Db.getprofilinglevel () returns level, value 0|1|2, meaning: 0 for off, 1 for slow command, 2 for all Open profile function: Db.setprofilinglevel (level,slowms); #level等级. At level 1 o'clock, the slow command defaults to SLOWMS (unit ms)(that is, execution time is greater than slowms for slow

Redis Performance Metrics monitoring commandsIn the process of learning, we must learn to use help frequently to understand the specific use of commands.1.info (monitoring typically uses this command to read data)127.0.0.1:6379> Help InfoINFO [Section]Summary:get information and statistics about the serversince:1.0.0Gr

courier START process, but they do not belong to the user ZahnLsof-p30297 //show those files are turned on by the PID 30297 processLSOF-D/tmp shows all theThe tmp folder opens the process for instance and files. But the symbol file is not listed lsof-u1000//View the file usage of the user's process UID is 100Lsof-utony//view file Usage for user Tony's processLsof-u^tony//view file Usage for processes that are not user Tony (^ is inverse meaning)Lsof-i//Show all open portsLsof-i: the //Show all

Recent need to collate commands for device performance monitoring (Linux)1. UptimeEg:22:59:10 up, 23:05, 3 users, load average:0.29, 0.43, 0.94One minute, five minutes, 15 minute load respectivelyRepresents the average number of processes waiting in the CPU wait queue per unit time2. free [-B | -k| -m] Specifies the output unitegTotal used free shared buffers Cac

For ~ 6 these commands seem simple to be used separately, but they can exert their real power only when combined with redirection and regular expressions to form more complex functions or even automated scripts. Cmp and diff can be used for version control and compare the differences between two version files. They can also be used to compare program output. 1. cmp byte comparison For ~ 6 these commands see

file server, so it is important to distinguish between different types of applications, usually the application can be divided into two types:①io related, IO-related applications are often used to process large amounts of data, require a lot of memory and storage, frequent IO operations to read and write data, and less CPU requirements, most of the time the CPU is waiting for the hard disk, such as database server, file server, etc. ②CPU related, CPU-related applications need to use a large num

H: Switch to show all threads1: Show individual CPU runs (similar commands and Mpstat)ps-ef or ps-aux Show all processes, except for different display stylesps-elf | grep java | wc-l count Java threadsConvert Java to httpd to count Apache threadsFind, DF, du, iostat disk IO commandfind/home/admin/-name "Hsf.log" to find a file named Hsf.log under the/home/admin/pathdf-ha View the disk usage of the file systemDu-ak | sort-t$ ' \ t '-l1-nr-k2-r All fil