monitoring tools

NTOP Tools NTOP is a powerful traffic monitoring, port monitoring, service monitoring management system Enables efficient monitoring of multiple server networks ntop function Introduction NTOP provides a command line interface and Web interface two

After using memcached, definitely want to know the effect of cache, for memcached some running state monitoring is necessary, memcached provided stats This command can view the memcached related state, but not very detailed, such as: [Java] View plain copy print? [root@bogonbin]#cd/usr/local/bin [root@bogonbin]#telnet 127.0.0.111211 trying127.0.0.1... connectedto localhost.localdomain (127.0.0.1) . escapecharacteris ' ^] ' . stats statpid6779 statup

Set of cpu monitoring tools for Linux Set of cpu monitoring tools for Linux 1. top tools provided by the systemDetailed parameter description:15:46:08: current system time45 days: the system runs for 45 days.2 users: the system currently has two users logging onLoad average:

system processing.SVCTM: The average time that the system processes each request, excluding the time consumed in the request 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 full.To determine the system bottleneck, it is sometimes necessary to combine several S

This tool is still very powerful.Iptraf of real-time monitoring tools for Linux network traffic[My Linux, make Linux easier to use] Iptraf is a network monitoring tool, features more powerful than nload, can monitor all traffic, IP traffic, by protocol traffic, you can also set filters, such asFor the monitoring networ

In addition to the integrated VISUALVM and Jconsole, the JDK itself provides performance tuning monitoring tools such as JPS, Jstack, Jmap, Jhat, and Jstat.In Java development, we sometimes encounter the following problems:OutOfMemoryError, Low memoryMemory leaksThread deadlockLock contention (lock contention)The Java process consumes too much CPU......These problems may be overlooked by many people in thei

Chapter 8 JVM performance monitoring and troubleshooting tools (2), jvm troubleshooting Note: This blog is mainly recorded in "deep understanding of Java Virtual Machine (version 2)" Note: For details about JVM performance monitoring and troubleshooting tools on the command line, see Chapter 7 JVM performance

[O M personnel? Why? 02] 20 built-in monitoring tools for Linux: vmstat and netstat? Communications Administration? Song? Too many ?? Yellow? Argon? [O M personnel? Why? 01] 20 built-in monitoring tools for Linux systems: top-level gossip, Reading Zhao Hao ( amp; cap; _ amp; cap;) O ~... [O M personnel? Why? 02] 20

There are many valid command-line tools in the Bin directory of the jdk, which are the encapsulation of the Jdk\lib\toos.jar class Library.first, jps: virtual machine process status tool, query out Lvmid.second, jstat: Virtual Machine Statistics monitoring tool,three, Jinfo:java Configuration Information toolView and adjust the parameters of a virtual machine in real Time.Iv. Jmap:java memory Image Tool: ge

BKJIA is just as important as monitoring network traffic and protecting data and computers. Understanding the most basic network fault diagnosis and troubleshooting skills helps you save time and costs. Each Linux release comes with a large number of command line tools to help you diagnose network problems. In addition, there are many open-source tools that can h

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 system and MySQL database.Characteristics:

A fully running Linux system consists of many subsystems (introduction, Cpu,memory,io,network, ...). ), monitoring and evaluating these subsystems is part of the performance monitoring. We often need macroscopic view of the whole system state, also need microscopic look at the operation of each subsystem. Fortunately, we don't have to reinvent the wheel to monitor these subsystems with the

The simplest and most straightforward way to do this is to add the -vv parameter at the start of the memcached to print each client's request and corresponding at the console, which is ideal for development. Another straightforward way to do this is through Telnet, for example: If the server is a native 11211 port, you can usetelnet localhost 11211Log in, and then use stats to view the server status.In addition, the better choice is to use a number of specialized

-value 64activerehashing YesClient-output-buffer-limit Normal 0 0 0Client-output-buffer-limit slave 256MB 64MB 60Client-output-buffer-limit pubsub 32MB 8MB 60 /opt/redis/bin/redis-server/opt/redis/etc/redis.conf RedislivePython writes, parses query statements and has web-interface monitoring tools Note: Long running has an impact on Redis performance Installing Redislive Pip Instal

The JDK provides us with a range of JVM performance monitoring and troubleshooting tools, which are documented here based on learning progress. Easy to read later1.JPS Virtual Machine Process ToolSimilar to the PS command in Linux systems for viewing virtual machine processes, the following features are commonly usedJps-l Show virtual machine process ID and process main classJps-q shows only the process ID

: Number of bytes sent per secondRXCMP/S: Compressed packets received per secondTXCMP/S: Compressed packets sent per secondRXMCST/S: Multicast packets received per secondb) Sar-n Edev 2 10Linux 2.6.18-53.el5pae (Localhost.localdomain) 03/29/200901:42:18 AM IFACE rxerr/s txerr/s coll/s rxdrop/s txdrop/s txcarr/s rxfram/s rxfifo/s txfifo/s01:42:20 AM Lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0001:42:20 AM eth1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0001:42:20 AM sit0 0.00 0.00 0.00 0.00 0.00

When it comes to locating the system, we often need to understand and analyze the runtime state of the JVM. What should be the starting point? The answer is to start with the data. The data here include: GC logs, exception stacks, thread snapshots (threaddump), heap dump snapshots (heapdump), and so on. The JDK is built with a wealth of virtual machine monitoring and analysis tools to use. Can make our trou

1. Add Tasks There are two types of tasks. One is a single URL that corresponds to multiple keywords. Suitable for monitoring multiple keyword rankings for a single site. The other is a single keyword corresponding to multiple domain names, suitable for a single keyword station group site or competitor website keyword ranking monitoring. 2, selected to build a good task, click on the top right

A fully running Linux system consists of many subsystems (introduction, Cpu,memory,io,network, ...). ), monitoring and evaluating these subsystems is part of the performance monitoring. We often need macroscopic view of the whole system state, also need microscopic look at the operation of each subsystem. Fortunately, we don't have to reinvent the wheel to monitor these subsystems with the

This article reads the reading notes for the deep understanding of Java Virtual Machine-JVM advanced features and best practices, and it organizes the performance monitoring and Troubleshooting section of the virtual machine.About the two parts of the guide map or hope that you can personally test the experience, there are a lot of articles on the Internet, here are excerpts from several individuals think good articles for reference: Jstat/ji