rabbitmq monitoring tools

swpd freeFrom the above data you can see the points: Context Switch (CS) is much higher than interrupts (in), which means the kernel has to switch processes back and forth; Further observation shows that system time (SY) is very high and user time (US) is low, plus a high-frequency context switch (CS), indicating that a large number of system calls are being invoked by the running application; Run Queue (R) is above 14 threads, according to the hardware configuration of thi

Java virtual machine performance monitoring and troubleshooting tools, virtual machine troubleshooting 1. jdk command line tool 1) jps: Virtual Machine Process status Tool Jps [option] [hostid] Main parameters: 2) jstat: Virtual Machine statistics monitoring tool Jstat- Main parameters: For example, if the gc information of process 8675 is queried twice every 8

large, you may need to add-j-xmx512m This parameter specifies the maximum heap memory, which is jhat-j-xmx512m-port9998/tmp/dump.dat. Then you can enter the host address in the browser: 9998 viewed:4. Jstat (JVM Statistical monitoring tool)Jstat [generaloption | outputoptions vmid[interval[s|ms] [count]]Vmid is the Java Virtual machine ID, which is generally the process ID on the Linux/unix system. Interval is the sampling time interval. Count is the

1. QuestionsOutOfMemoryError: Insufficient memory;Memory leaksThread deadlockLock Competition (lock contention)Java consumes too much CPU2. Java Common Health ToolsJPS (Java Virtual Machine Process Status tool) monitors JVM process state informationUse format:JPS [Options] [HostID]-M: output parameters that pass in the Main method-L: Displays the fully qualified name of the main class or Jar-V: Displays the parameters specified for the JVM virtual machineJstack : View the thread stack informatio

[O M engineer _ 01] 20 built-in monitoring tools for Linux systems: top workers often have server performance problems during O M, such: i/O, CPU, memory, network and other bottlenecks, so the system O M, can not sleep? The following tools are helpful for refreshing your mind ~ (@ ^ _ ^ @)~ (1) If top is written in front, here Rocky wants to clarify one point,

[O M engineer _ 02] 20 built-in Linux system monitoring tools: vmstat and netstat. This article is the second article and the first article of O M engineer on the road. See: [O M tips _ 01] 20 built-in monitoring tools for Linux systems: top gossip, reading and writing O ~ (2) If vmstat is written in front, here Roc

Linux top commands for monitoring and diagnosis tools Directory (1) system and task statistics:(2) process and cpu statistics:(3) memory information of the last two behaviors:How does one calculate the actual number of available memory for a program?How does one calculate the number of memory used by a program of 3.2?3.3 How can I determine whether the system has insufficient memory?3.4 difference between b

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

all the information along with the partitioned table. However, if we have already partitioned and only need to clone the root partition, we can change SDA to sda1,sda2 and so on according to the location of our system root partition.8) Specify the source portSuppose your firewall filters all the ports except the 25 port, you need to specify the source port using the-P option.Server-side$NC-L 1567Client$NC 172.31.100.7 1567-p 25Using a port within 1024 requires root access. This command will ope

Linux performance monitoring, testing, and optimization tools There are a lot of performance tools on the Linux platform, dazzled, long-term exploration and experience found that the best to use is those long-tested, simple gadgets. System Performance Expert Brendan D. Gregg updated his famous Linux Performance Tools

There are a lot of performance tools on the Linux platform, a dazzling, long-term groping and experience finding the best thing to use is the proven, simple gadgets. Brendan D. Gregg, a system performance expert, updated his famous talk (Linux performance Tools) and slides on Linux in the recent LinuxCon NA 2014 conference.Compared with Brendan last year's talk, this year added testing and optimization to t

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

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