application monitoring tools dynatrace

Before you start About this series Writing code for an application is just the first phase of a lengthy process required to deliver a robust product quality program. The code must be tested to verify its operation and accuracy. It is also often necessary to analyze the code to eliminate performance bottlenecks and resource waste (especially memory). Code must also be monitored to locate faults, identify usage patterns, look for opportunities for fur

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

: 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

server two:VisualVm Plugin IntroductionYou can add functionality to VisualVM by installing plug-ins provided by the VisualVM plug-in Manager by using the plug-in organizer. You can also develop your own plugins and add them to the Update center to extend the functionality of the VisualVM.For example, installing the Visualvm-mbeans plug-in can add a "MBeans" label to the Application tab, which allows you to monitor and manage MBeans within VisualVM.To

file that is being opened, lsof (list openfiles) is a tool that lists the open files for the current system. The application Open File descriptor list provides a lot of information about the application itself, so the lsof tool is able to view this list to help with system monitoring and troubleshooting[Email protected]:~> lsof-a-u dongwm-d txt# View files of fi

indicator that can display system-wide delay type errors. It is the sum of memory\\pages input/sec and memory\\pages output/sec . is calculated using the number of pages, so that it can be compared with other page counts, such as memory\\page faults/sec , without having to do the conversion , which includes the file system cache to satisfy the error ( typically requested by the application The page is retrieved in a non-cached mapped memory file. Re

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, a

Original: http://www.unixmen.com/iptraf-tcpudp-network-monitoring-utility/ enock Seth Nyamadortranslation: Lctt https://linux.cn/article-5577-1.html Translator: GolinuxIptraf is a ncurses-based IP LAN monitoring tool that generates various network statistics, including TCP information, UDP statistics, ICMP and OSPF information, Ethernet payload information, node statistics, IP checksum errors, and other inf

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

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

application uses memory, and the PMAP is to display relevant information when a process ID is given. The above shows some of the output from using the "-X" option, and you can use the Pmap "-X" option to get more details, but only if you have a wider terminal window.Iostat650) this.width=650; "class=" lazy "width=" 690 "height=" 552 "src=" http://static.webhek.com/techug-res/uploads/2015/ 09/aa213e02jw1eukog3871bj20lo0hcwg5.jpg "style=" border:0px;ve

Install the cpu monitoring tool-Linux Enterprise Application-Linux server application for centos. For more information, see. Windows Hardware Detection tools and cpu monitoring tools are piled up, But linux is a little pitiful. L

1. Daemon Thread The Java threading mechanism is divided into two types, the user thread and the daemon thread (Daemon thread). User threads: Runs in the foreground, performing specific tasks. For example: The main thread of the program, the child thread that connects the network. Daemon Thread: Running in the background, serving other threads. Example: Garbage collector thread Thread similarities and differences: Once all the user threads are running, the daemon exits with the JVM, which is act

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

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.

be monitored can be automatically identified and added, Netdata Monitoring Application service configuration in/etc/netdata/ PYTHON.D, the configuration of many services is supported by default, then configure an nginx monitor to seeMonitor Nginx must be open nginx Status monitoring page, here Skip, test nginx status page after normal access, you can configure/e