monitoring tools

In addition to the integrated VISUALVM and Jconsole, the JVM also has small tools such as JPS, Jstack, Jmap, Jhat, Jstat, etc.Problems that may be encountered in development OutOfMemoryError, Low memory Memory leaks Thread deadlock Lock contention (lock contention) The Java process consumes too much CPU These problems may be overlooked by many people in their daily development (for example, some people encounter the probl

Linux system monitoring and diagnostic tools-lsof usage Overview 1. lsof introduction lsof is a very practical system-level monitoring and diagnostic tool in linux. It means List Open Files. It is easy to remember that it is a combination of "ls + ~It can be used to list the File Information opened by various processes. Remember: "Everything is a file" in linux,

Article Title: use of commercial server AIX resource monitoring and modulation tools. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Performance Optimization and determining the performance bottleneck in the system are one of the main tasks of the system administrator.

[O M personnel? Why? 01] 20 built-in monitoring tools in Linux: is the top person in O M? Slave 32? Leo? Why does the male reading Qi Shi Jie (shu? /O, CPU, memory, network and other bottlenecks, so the system O M, can not sleep? The following tools are helpful for refreshing your mind ~ (@ ^ _ ^ @)~... [O M personnel? Why? 01] 20 built-in

to the information currently crawled to further analysisSecond, JVISUALVMThe JDK comes with a JVISUALVM tool, which is used to monitor the CPU, memory, thread, and so on of the Java Runtime program. and monitor Java programs in a graphical way with remote monitoring capabilities.Pre-preparation1, upload tomcat to the virtual machine, WebApps under the existence of Prefteach package2, monitoring the JVM bef

established# View the socket that established the connectionRecv-q send-q Local address:port Peer address:port0 0 192.168.8.46:59073 60.2.235.195:61002timer: (keepalive,60min,0)0 0 192.168.8.46:52996 112.95.243.28:http0 0 192.168.8.46:51066 128.121.22.144:http0 0 192.168.8.46:38547 112.95.240.222:http0 0 192.168.8.46:49295 74.125.71.154:http0 0 192.168.8.46:46500 10.14.22.26:61300timer: (keepalive,48min,0)[Email protected]:~> sudo/usr/sbin/ss-l # shows all the listening socketsRecv-q send-q Loc

Monitors the servers built on the linux operating system platform, including many aspects, here, I will summarize several linux monitoring tools and their installation and usage through network learning. 1. phpSysinfo [root @ localhost ~] #Llphpsysinfo-3.0.14.tar.gz-rw-r -- 1rootroot470084Oct1718: 16 phpsysin ForLinux operating systemThe monitoring of servers on

NETXMS 2.0.6 released, updated as follows:-Fixed random server crash If ODBC database driver is used-Fixed incorrect reading of long text fields by MS SQL database driver-Fixed issues: #1052, #1063For more information, see: Changelog: http://www.netxms.org/download/NETXMS is a new, fast-growing system monitoring tool that is released under the GPL2 license. It can be used to monitor the entire IT infrastructure (Tengyun technology ty300.com), from SNM

When the system gets slower and slower, you need to have dual eyes staring at your machine's CPU and memory and other hardware information to find out the real culprit. This article recommends five system monitoring tools under Ubuntu to keep you Vigilant.Indicator-SysMonitor Indicator-SysMonitor is simple but runs well. Once installed and started running, the CPU and memory usage can be displayed on the t

activity for these active hosts Display filters for TCP, UDP, and other protocols that allow you to see the traffic you're interested in Log records Supports Ethernet, FDDI, ISDN, SLIP, PPP, and loopback interface types A native socket interface built into the Linux kernel that can be used in a wide range of supported NICs Full screen, menu driven operation To installUbuntu and its derivative version sudo apt-get install iptraf Arch Linux and its derivativ

Real-time traffic monitoring tools, monitoring TCP/IP connectivity, etc., the disadvantage is no reporting function. Must be root to run.Parameters:-I set the monitoring network card, such as: # Iftop-i eth1-B displays traffic in bytes (default is bits), such as: # Iftop-b-N Causes the host information to display IP di

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

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

A practical perspective on the world of Virtual machine memory management.First, the command-line tools of the JDKThe 1.JPS (JVM process Status tool) virtual machine processes health tools.Displays all of the hotspot virtual machine processes in the development system.Functionality is single, but most other JDK tools need to enter the Lvmid it queries to determine which virtual machine process to monitor. F

　　Log tools for monitoring CPU and memory Linux Tools: Download Address: Get_cpu_mem_info_sh.rar How to use: Download the file and upload it to the/tmp directory after decompression. Run CD switch to/tmp directory. Perform: Nohup Bash get_cpu_mem_info.sh The tool generates a log file in the/tmp directory that records the CPU and memory usage of the real-

, generate a memory dump snapshot (heapdump file) of the virtual machine.5) JHAT:JVM Heap Dump Browser, which parses the Headdump file, establishes a http/html server that allows the user to view the results of the analysis on the browser6) Jstack:stack Trace for Java to generate a thread snapshot of the current moment of the virtual machine2. Visualization Tools1. Jconsle2. JVISULAVMRemote connection needs to be set for Java opt to use, see: http://www.cnblogs.com/Jtianlin/p/5021540.htmlJVM (4)

program Key code: #include 2. Performance testing tools In Linux: Find.-Name "*. c" | xargs WC-lTime-execute commands and timing Time find.-Name "*. c" | xargs WC-l // count the command execution time Real 0m33. 748 sUser 0m0. 772 sSys 0m1. 044 s 1) Real Time: the elapsed time from command line execution to running termination; 2) User CPU time: the user CPU time spent on command execution completion, that is, the total execution time of commands

Here is a description of the Redislive installation deployment of the Redis cluster Monitoring UI tool.Plainly, Redislive is a free and open source based on Python, Tornado reids monitoring tools, in the form of the web to show the Redis memory, key, instance data and other information. Redislive official website installs Python Because Redislive is based on Pyth

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