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errors, bottlenecks and abnormal activity5:arpwatch– Ethernet Activity MonitorThe Arpwatch is designed to monitor Ethernet address resolution (changes in Mac and IP addresses) on Linux. He continuously monitors Ethernet activity for a period of time and outputs a log of changes in IP and MAC address pairs. It can also send an email notification to an administrator, alerting you to an increase in address pairing. This is useful for detecting ARP attacks on a network.For more information, see: Ar
Document directory
Performance bottleneck
Performance counters
Monitoring servers are a key part of server management..By using appropriate monitoring tools, you can detect server problems, evaluate the results of website content changes, and plan upgrades to facilitat
Options
Role
-F
Forces the output thread stack when a normal output request is not responded to
-L
Displays additional information about the lock, in addition to the stack
-M
If you call to a local method, you can display the C + + stack
Jstack Execution ExampleJust intercept the part and see this is the 10492 thread snapshot of the current time of the virtual machine process ID. The thread is in the run
handling, and performance analysis capabilities, and is very powerful. The Visual VM also has a large advantage, which has a small impact on the actual performance of the application, making it possible to apply directly to the production environment.As for the specific how to use, it is not demonstrated, relatively simple. In addition to the above two tools, yo
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
MongoDB comes with a web interface monitor.Configuration is simple, only need to add parameters at boot time:--httpinterface or write httpinterface=true to the configuration file to restart. Enter in the browser: Ip:mongodb port number +1000 For example, the database port is 20011, the monitoring page is: ip:21011/export/mongodb/bin/mongod-f/export/
JoeZonkerBrockmeier mentioned five tools to monitor and improve Linux system performance in an article on the Linux Foundation website. These five tools cover kernel optimization, network monitoring, and system monitoring. they are KDESystemMonitor, Dstats, TheSysstatAuite,
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 (inc
Joe Zonker Brockmeier mentioned five tools to monitor and improve Linux system performance in an article on the Linux Foundation website.
These five tools cover Kernel optimization, network monitoring, and System monitoring. They are KDE System Monitor, Dstats, The Sysstat A
A product requires stress testing, so I decided to use the performance tool provided by Windows2003 for system performance monitoring.
If you have sufficient permissions in the test environment, you can easily use a dedicated machine to Execute Performance Tools and remotely
When there is a problem with the Linux system, we not only need to look at the system log information, but also use a lot of performance monitoring tools to determine what part (memory, CPU, hard disk ...). ) out of the question. In the Linux system, all the operating parameters are saved in the virtual directory/proc, in other words, we use the
Monitoring Linux system performance every day is a daunting task for every system/network administrator. After 5 years of Linux system administrators in the IT industry, I found it's not easy to monitor and keep the system up and running, so I've summed up 8 very useful command-line tools for Linux/unix system administrators. These commands support all Linux syst
ArticleDirectory
Linux R D practice performance monitoring tools
Abstract:This article summarizes eight very practical Linux Command Line performance monitoring tools. These commands support all Linux systems an
Overview
When the system bugs need to locate the problem, knowledge, experience is the key foundation, the data is the basis, the tool is the use of knowledge processing data means. The data mentioned here include: Run log, exception stack, GC log, thread snapshot (threaddump/javacore file), heap dump Snapshot (heapdump/hprof file), etc. Using the appropriate virtual machine monitoring and analysis tools c
What is DODBA tools?DODBA Tools is a console-based remote monitoring tool that does not need to install any software on the local/remote system, it collects real-time performance status data of the operating system, MySQL, InnoDB in real time, and can generate doing log files to help you quickly understand/ Optimized s
The JDK itself provides many convenient JVM performance tuning monitoring tools, in addition to the integrated VISUALVM and Jconsole, there are JPS, Jstack, Jmap, Jhat, Jstat and other small tools, this blog hope to play a useful, Let's start to understand the common tools f
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
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