monitoring tools

and port of the ZK serverOnce the connection is successful, the node data information of ZK can be seen.2.zk Browser Eclipse PluginInstalling the Eclipse PluginStep 1. On the Eclipse menu, open Help, Install New software ...Step 2. Add the URL http://www.massedynamic.org/eclipse/updates/.Step 3. Select Plug-in and installRunStep 1. Open Window->show View->other...->zookeeper 3.2.2 in the Eclipse menuStep 2. Connect ZKEnter a running ZK server address and portOnce the connection is successful, y

)) 999 printf ("%d", i); 168}}Procedure trial Teaching Performance monitoring instructions, SQRT takes up the most time. P3 move the SQRT function outside the For loop,#include int i,bound; Bound =root (n); for (i =2;i 999 { if (n%i==0) 5288 return 0; 831 return 1; 168 }} Main () { int i, n; n=1000; 1 for (i=2;iP4By a special

JSTAT:JVM Statistics Monitoring Tool The Jstat command monitors various runtime state information for the JVM virtual machine, including memory status, garbage collection, loading of classes, and so on. Jstat command format: jstat [option Vmid [interval] [count]] Jstat command Examples Command: JSTAT-GC 1203 500 3 Command explanation: Check the status of garbage collection with process ID 1203 every 500 milliseconds, query 3 times Command options

|one-line-both|one-line-sent|one-line-received) Controls the appearance of each item in the display. Show-totals: (Yes|no) Shows cumulative total for each item. Log-scale: (Yes|no) Use a logarithmic scale for bar graphs. Max-bandwidth:bw Fixes the maximum for the bar graph scale to bw, e.g. "10M". Note that the value have to always is in bits, regardless if the option to display in bytes have been chosen. Net-filter:net/mask Defines an IP network boundary for determining packet

, Innodb-buffer, Innodb-io, Innodb-ops, lustre, Memcach E-hits, Mysql-io, Mysql-keys, Mysql5-cmds, Mysql5-conn, Mysql5-io, Mysql5-keys, Net-packets, nfs3, Nfs3-ops, NFSD3, Nfsd3-ops, NTP, Postfix, Power, Proc-count, RPC, RPCD, SendMail, snooze, thermal, Top-bio, TOP-CPU, Top-cputime, Top-c Putime-avg, Top-io, Top-latency, Top-latency-avg, Top-mem, Top-oom, Utmp, Vm-memctl, Vmk-hba, Vmk-int, vmk-nic, VZ-CPU, Vz-io, VZ-UBC, WiFiParameter interpretation--disk-util: D

not indicate a ram bottleneck. The virtual memory system often makes page exports to the memory segment, but the page import operation indicates that the server needs more memory, and the page import needs to copy the memory segment from swap disk back to RAM, causing the server to become slower.There are several ways to solve this problem:1. The simplest, increase the RAM;2. Reduce the need for RAM by changing the SGA;3. Reduce the need for RAM. (e.g., reduction of PGA)Reference Documentation:

Chapter 7 JVM performance monitoring and troubleshooting tools (1), jvm troubleshooting 1. Locate System Problems Basis GC log Heapdump/hprof File) Thread snapshot (threaddump/javacore file) Running log Exception Stack Tools used for analysis Jps: displays all JVM processes in a specified system. Jstat: Collects JVM running data.

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

Mysql monitoring tools: zabbix + MPM (Performance Monitor for MySQL), zabbixmpm MPM is mainly used to monitor various mysql parameter performance indicators. The following describes the configuration of MPM and zabbix: The following figure shows the configuration file diagram. It consists of two parts: 1. zabbix template:Template_FromDual.MySQL.*.xml 2. MPM agent perl module:FromDualMySQL*.pm Installatio

Nethogs IntroductionNethogs is an open-source, free, terminal network traffic monitoring tool that monitors the network traffic of Linux processes or applications. Nethogs can only monitor the network bandwidth consumption of the process in real time. Nethogs supports IPV4 and IPV6 protocols, supports local network cards, and PPP links.The official introduction is as follows:Nethogs is a small ' net top ' tool. Instead of breaking the traffic down per

which the RAM segment can be moved to a special disk segment of swap disk, where the page export and page import of virtual memory occur, and page export does not indicate a ram bottleneck. The virtual memory system often makes page exports to the memory segment, but the page import operation indicates that the server needs more memory, and the page import needs to copy the memory segment from swap disk back to RAM, causing the server to become slower.There are several ways to solve this proble

I. Installation IPTRAF: (Traf is a shorthand for traffic, meaning traffic, transportation)Run command: sudo apt-get install Iptraf Two. Iptraf use:Run command: IptrafThen press any key to continue650) this.width=650; "src=" http://img1.51cto.com/attachment/201203/134124722.jpg "border=" 0 "/>First item: IP traffic MonitoringSecond item: General view network card traffic status. View only the total traffic for each NICThe third item: Check the network card traffic status in detail. s

Two tools for monitoring Apache logs Apache Log analysis Tool Webalizer Awstat Prepare webalizer-2.23-05-src.tgz awstats-7.0.tar.gz perl-5.16.3.1603.tar.gz Install Apache [Root@lly ~]# Mkdir/mnt/cdrom [root@lly ~]# mount/dev/cdrom/mnt/cdrom Mounted optical drive [Root@lly ~]# cd/mnt/cdrom/server/ [Root@lly server]# RPM-IVH apr-1.2.7-11.el5_3.1.i386.rpm [Root@lly server]# rpm-ivh postgresql-libs-8.1.

Tools for monitoring user operation Records under Linux:Apt-get Install Bsdutilsmkdir/opt/operation_logchmod 777-r/opt/operation_logvi/etc/profileEXEC script-t 2>/opt/operation_log/$USER-$UID- date +%F-%T . Data-a-q-f/opt/operation_log/$USER-$UID- date +%F-%T . Log: WqSource/etc/profileOperation Record Playback:Scriptreplay/opt/operation_log/root-0-2018-01-30-20\:11\:29.data/opt/operation_log/root-0-2018-01

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

Installation:sudo add-apt-repository ppa: Ferramroberto/linuxfreedomlucidsudo apt-get update sudo apt-get install NetspeedThen in this way you can not find the launcher, so after research, this is only suitable for GNOME desktop use, if unity needs to install the following version:Unloadingsudo apt-get remove netspeedInstalling a unity-enabled versionsudo apt-add-repository ppa: Fixnix/netspeedsudo apt-get updatesudo apt-get Install Indicator-netspeed-unityStartIndicator-netspeed-unity It will t

Today introduced a Linux under the monitoring of real-time broadband use of software iftop,iftop can view the flow of dynamic, to help you solve, find the network slow problem.Of course, check the network card traffic tools and Iptraf, nethogs and so on, the main recommended today iftop!Software Installation: cd/byrd/tools/wget http://www.ex-parrot.com/~pdw/ifto

Article Title: Main Oracle monitoring tools in Linux. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic categories 1.top 　 The top command displays the process, CPU, memory, load, and other information of the Linux system in real time. It is the best tool for us to understand the over

JDK itself comes with a lot of practical tools. The following are commonly used:1. JPs: displays all Virtual Machine Processes-Q: only ID numbers are listed.-M: ID, primary class, and parameters passed to the primary class-L: ID and full name of the main class-V: ID, primary class, and complete VM startup parameters 2. jstat: Virtual Machine statistics monitoring Reference: http://blog.163.com/yangshuo_qq

connection interrupt request, or confirmation of a previous connection interrupt requestFin-wait-2: Waiting for connection interrupt request from remote TCP www.2cto.comClose-wait: Waiting for a connection interrupt request from a local userCLOSING: Waiting for remote TCP to confirm connection interruptionLast-ack: Waiting for acknowledgement of the original connection interrupt request to the remote TCPTime-wait: Wait enough time to ensure that the remote TCP receives a connection interrupt re