tools capture separate packages on the link, analyze their content, and display decoded content or packet-level statistics. These tools monitor and manage the network at the lowest level, as well as the most granular monitoring, at the expense of the process of affecting network I/O and analysis.Dhcpdump: A command-line DHCP traffic sniffing tool that captures DHCP request/reply traffic and displays decode
jvmstat_home:jvmstat installation directory JVMSTAT_JAVA_HOME:JDK directory, same as Java_home value
After configuring the two environment variables, you can run Jvmstat, run the command: Shell code VISUALGC PID #windows the system into the bat directory to run the command #linux the system into the bin directory after running the command
After the run interface automatically opens and displays the appropriate content, as shown in the figure:
From the jvmstat can be clearly observed in the
benefits;The data processing strategy of middleware will make your basic service more stable and efficient;Storage-side The biggest problem we encountered when using hbase was that it caused some IO storms after the data was deleted, and there was a situation where the Phoenix0.4.0 ran out of CPU (0.4.2 has been resolved). Our solution for these situations is to have the table split in time. In other words, a table is rolling like a log file by time, and the benefit is that deleting old data w
What kind of monitoring tool is the most beloved of the Ops people? which indicators need to be monitored? What can I monitor? How far can you monitor it? Perhaps these questions are not even clear to you. First look at the status of the Ops brothers. 1 . Current status of operation and maintenance the traditional enterprise computer operation and maintenance is to notify the operation and maintenance p
What kind of monitoring tool is the most beloved of the Ops people?Which indicators need to be monitored? What can I monitor? How far can you monitor it? Perhaps these questions are not even clear to you. First look at the status of the Ops brothers.1 . Current status of operation and maintenancethe traditional enterprise computer operation and maintenance is to notify the operation and maintenance personn
(i) Nmon tools overviewNmon is a tool for Linux server monitoring, through the Nmon, can be implemented to monitor the following parameters:--CPU usage Rate--memory, swap space utilization--Usage of network--Disk I/O, read/write speed--Network I/O speed, transmission and read/write speed--top-level process to see which applications are consuming more CPU--Network File system NFS--File system usage (similar
No webmaster is willing to their own site downtime, but Google server will be a problem, not to mention that I have small sites, broken servers. The best solution to the down machine is only one: solve it in time. To solve the problem in time to know when the site server down. You can not 24 hours to refresh their web page to see if the page is normal, not to expect your users will be the first time you notice the site down, unless you are Google.
Therefore, as a webmaster, web site
API Monitor is a freeware that allows you to monitor and control applications and services, making API calls. It is a powerful tool to see how applications and services work, or track your problems in your own applications.64-bit SupportAPI monitoring supports monitoring of 64-bit applications and services. The 64-bit version can only be used to monitor 64-bit ap
Comparison of open source monitoring software
Cacti (meaning cactus in English)
is a set of PHP, MySQL, SNMP and rrdtool development of network traffic monitoring graphical analysis tool, which through the snmpget to obtain data using RRDtool drawing, simplifying rrdtool use. Provides very powerful data and user management capabilities, specifying
The Linux traffic monitoring software iptraf IPTraf can be used to monitor the load of an IP network. IPTraf uses the built-in Linux kernel... is a tool for monitoring network link traffic load. It uses snmp protocol to obtain the device traffic from the Linux system. Let's take a look at its specific implementation.
1. Linux traffic
Process Monitoring Tool Supervisor starts MongoDB
1. What is a supervisor?
Superviosr is a process monitoring tool on a UNIX-like system. Supervisor is a Python-developed client/server system that can manage and monitor processes on * nix. However, like daemontools, it cannot monitor daemon processes.
Official Website:
VISUALVM is a free, integrated visualization tool that integrates multiple JDK command-line tools to provide you with powerful analytical capabilities for performance analysis and tuning of Java applications. These features include generating and analyzing massive amounts of data, tracking memory leaks, monitoring the garbage collector, performing memory and CPU analysis, and it also supports browsing and m
Pigoss operation and maintenance monitoring system as the main brand of the network, has become the pursuit of ITIL-based standard ITSM industry customers and IT service provider preferred operation and maintenance monitoring platform. Whether it's storage monitoring for Oracle monitoring, virtualization
If you're looking for a very easy-to-use Linux performance monitoring tool right now, I highly recommend installing and using the Nmon command-line utility.Nmon Monitoring ToolsThe Nmon is a system administrator-oriented tuning and benchmarking tool that can be used to display performance data about the following:
What kind of monitoring tool is the most beloved of the Ops people?Which indicators need to be monitored? What can I monitor? How far can you monitor it? Perhaps these questions are not even clear to you. First look at the status of the Ops brothers.1 . Current status of operation and maintenanceThe traditional enterprise computer operation and maintenance is to notify the operation and maintenance personne
Original link: http://blog.csdn.net/chendc201/article/details/22905511In the Java multithreaded application run, in most cases we do not know what exactly happened, only the wrong log, we know that the original code is deadlock. Aside from the code-checking tool, let's talk about using VISUALVM monitoring to analyze the operation of our multithreaded operations.Ad:51cto College: It quality courses online lo
We mentioned earlier that there are many Linux system monitoring tools that can be used to monitor system performance. However, we estimate that more users may prefer tools (top commands) that are included in most Linux distributions ). The top command is a real-time task manager in Linux. it is also used to find the system performance in the GNU/Linux release.
We mentioned earlier that there are many Linux system
functionA command-line tool for monitoring the various health status information for a virtual machine. It can display the class load, memory, garbage collection, JIT compiling and other running data in the process of local or remote virtual machine, on the server without GUI graphical interface and only provide plain text console environment, it will be the tool
out traffic adds)-W automatically enlarges the column width with the specified column width instead of adapting to the length of the interface name-W If the content is wider than the width of the terminal window, wrap it automatically.-S maintains status updates on the same line (does not scroll without wrapping) Note: This is handy if you don't like the screen scrolling, similar to how Bmon is displayed-B displays bandwidth instead of KBYTES/S with kbits/s (bit and byte should know what the di
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