During O M, people often experience server performance problems, such as I/O, CPU, memory, and network bottlenecks.
So how can system O M be done? The following tools are helpful for refreshing your mind ~ (@ ^ _ ^ @)~
(1) Top
Here, Rocky wants to clarify one point, and believes that the best practice of top is:
"Find the process that consumes the most CPU resources"
After finding it, press [p] and force it to be sorted by CPU usage
Different fro
updated to current
L
Time
Total CPU time used by the process, in seconds
M
time+
Total CPU time used by the process, Unit 1/100 sec
N
%MEM
Percentage of physical memory used by the process
O
VIRT
The total amount of virtual memory used by the process, in kilobytes. Virt=swap+res
P
SWAP
The size, in kilobytes, of the virtual memory that the process is using, swapped out.
Application Software Learning Summary
Directory
SVN deployment and use
One-Health installation Zabbix
Ansible automatic operation and Maintenance tool installation and use
PPTP server-side deployment to client connections using
Fail2ban installation Configuration
KVM Installation Use
Lvs+keepalived Construction
KEEPALIVED+LVS Maintenance skills and tuning
Introduction of the concept type of LVS and three kinds of working modes and 10 scheduling algorithms
Redis Single
Unix system performance monitoring tools-SAR
System Environment:
Operating System: AIX 5.3.9
Oracle: Oracle 10gR2
SAR can be used to monitor Unix system performance and help us analyze performance bottlenecks. The sar tool is used in the form of "sar [Option] intervar [count]", where interval is the statistical information sampling time, and count is the number of samples.
RH442 strategy SAR
Understanding o
Use of monitoring tools in percona-toolkit series
1. pt-deadlock-logger
Function introduction:
Extract and record mysql deadlock Information
Usage:
Pt-deadlock-logger [OPTION...] SOURCE_DSN
Collect and save the latest deadlock information on mysql. You can directly print the deadlock information and store the deadlock information to the database, the deadlock information includes the server where the deadlo
Original Address:CentOS Monitoring Tools Sar,iostat
Author:Every day down
Yum-y Install Sysstat
Whereis SAR
Whereis Iostat
You can see the relevant commands
If you install with RPM package under Redhat, you can go to http://rpmfind.net/to find the Sysstat RPM package.
Also attached: Linux disk IO View related commands and instructions
From:http://blog.chinaunix.net/u3/93062/showart_1934431.html
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Today, wandering around the internet, accidentally found a monitoring tool: Netdata, feel a surprise, monitoring tools can be so beautiful!Simple to understand, this tool is relatively new, monitoring system operation status is very powerful, in addition to monitoring the CP
The monitoring server is a critical part of server management. By using the appropriate monitoring tools, you can detect server problems, evaluate the results of changes to site content, and plan upgrades to facilitate user access to the site. Select the appropriate monitoring tool
Monitoring indicators
Metrics that typically require monitoring for performance testing include:
1. Server Linux (including CPU, Memory, Load, I/O).
2. Database: 1. Mysql 2.Oracle (Cache hit, index, single SQL performance, database [/url] threads, number of data pool connections).
3. Middleware: 1. Jboss 2. Apache (including number of threads, number of connections, log).
4. Network: throughput, throughput
Need to monitor Linux server system performance? Try these tools built in or attached to the system below. Most Linux distributions are equipped with a large number of monitoring tools. These tools provide metrics that can be used to obtain relevant information and system activities. You can use these
One of the primary goals of managing certificates is to improve the security level of the enterprise, where authentication and access management should be valued. In this article, we'll start with a brief overview of the CA definition, and then focus on the application of Windows Server 2008 with professional certificate monitoring tools (Pkiview.msc and Certutil.exe). For an enterprise, it is very importan
Need to monitor Linux server system performance? Try these tools built in or attached to the system below. Most Linux distributions are equipped with a large number of monitoring tools. These tools provide metrics that can be used to obtain relevant information and system activities. You can use these
210.27.48.1Print packets that Helios and hot or communicate with AcesTcpdump host Helios and \ (hot or ACE \)Intercept host 210.27.48.1 and host 210.27.48.2 or 210.27.48.3 communicationTcpdump host 210.27.48.1 and \ (210.27.48.2 or 210.27.48.3 \)Prints the IP packets that the ACE communicates with any other host, but does not include packets between the Helios.Tcpdump IP host ace and not HeliosIf you want to get host 210.27.48.1 in addition to the IP packets that communicate with all hosts exce
Munin installation and configuration can refer to the first article:[Linux Utilities] Installation and configuration of Linux monitoring tools Munin http://www.cnblogs.com/rond/p/3757804.htmlThe result of Munin is shown in HTML. So the result is very simple, just need to deploy a Web server. But if you need to look at the results, you need to configure them.This post is divided into 2 sections:1. Web serve
Network traffic monitoring tools have a lot of, such as: MRTG, Cacti, Zabbix and so on, they have their own characteristics, different focus, only for different application scenarios for a variety of special needs. In addition to network traffic monitoring tools, there are nagios such a
Here are the 4 powerful monitoring tools I want to present to you.htop– Interactive Process ViewerYou may know the standard tool top for viewing real-time processes on a machine. If you don't know, run the top look and run the man top reading help manual.Htop is an extended version of top, with a richer overview (such as full command, visualization, graphical user interface GUI and user interface UI), with
to limited time, in the latter several blog, will detail the real-time priority process, static priority process.Introduced a half-day, process and thread, mainly to introduce two system monitoring tools and a process viewing tool.1, real-time system monitoring Tool Dstat,1DSTAT[-AFV] [options:] [Delay [Count]]-A: Display cdngy-C: Displays statistics of CPU perf
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