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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. Interva
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 proce
As you know, the JDK itself provides many virtual machine monitoring tools to monitor virtual machine service information, such as Jps,jmap,jstack. Under win7 , sometimes executing these commands will report an " Access denied " error, such as:This problem usually occurs with commands that involve process PID. Workaround: When the cmd Command box is turned on, right-click Run as Administrator , such as:The
capacity of Eden District 88.2072462755091% used # Eden area usage from Space: # s Urvior1 Zone capacity = 71303168 (68.0MB) # Survior1 area capacity used = 3952576 (3.76947021484375MB) # Surviror1 zone used Situation free = 67350592 (64.23052978515625MB) # Surviror1 area remaining capacity 5.543338551240809% used # Survior1 area use proportional to Space: # Survior2 Zone capacity = 71303168 (68.0MB) # Survior2 area capacity used = 0 (0.0M B) # Survior2 area Use
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
, generate a memory dump snapshot (heapdump file) of the virtual machine.5) JHAT:JVM Heap Dump Browser, which parses the Headdump file, establishes a http/html server that allows the user to view the results of the analysis on the browser6) Jstack:stack Trace for Java to generate a thread snapshot of the current moment of the virtual machine2. Visualization Tools1. Jconsle2. JVISULAVMRemote connection needs to be set for Java opt to use, see: http://www.cnblogs.com/Jtianlin/p/5021540.htmlJVM (4)
55 open-source data visualization tools and 55 open-source tools To do a good job, you must first sharpen the tool. This article briefly introduces 55 popular open-
Open Source Tool TestDisk Data recovery method Because of the operation error, in the installation of Fedora accidentally format the entire hard drive, resulting in all data loss (later access to relevant information, but the head data loss, sector data is still in), reluctantly installed Fedora, found several data recovery software, Finally, make sure to use open
Article Title: O M monitoring serialization: A Powerful open-source monitoring tool nagios. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open
HotSpot. Version 5.2 supports the following Linux distributions: Red Hat Enterprise Linux (more than 5.2, 6.x) SUSE Linux Enterprise Server (SLES SP1 and SP2) CentOS (5.2, 6.x Ubuntu Linux (10.04 LTS, 12.04 LTS)-zing 5.2 version of the new supported platform The JVM supports any Java Se/ee 6-based application and will support Java 7 in the near future. The Zing JVM release also includes a product applicati
Author Joachim Haagen skeie translator Li Yong posted on November 9, 2011 Domain Language Development theme tools, performance and scalability, Java Tag Performance tuning, open source Java sharing | More than once, we all had the idea of trying to find out what was going on in the bottom of a running program. This need may be due to slow service, Java Virtual
Reprint please indicate the source, the original address: http://blog.csdn.net/w565911788/article/details/47660789 (1) STAF (softwaretesting Automation framework) is an open source, cross-platform, multilingual, and reusable component built from IBM to build an automated test framework that can handle calls, resource management,
http://www.zabbix.com/Abbix (Z?bix) is an enterprise-class open source solution that provides distributed system monitoring and network monitoring capabilities based on a web interface.Zabbix can monitor various network parameters, ensure the safe operation of the server system, and provide a flexible notification mech
Linechart.NplotNplot is an open source chart class library under. Net. Its commendable place is the elegant and flexible API design. Nplot contains the Windows Form control, ASP. NET control and a class that creates a bitmap picture. There is also an available gtk# control.xschartingXscharting is a charting component developed in C # and offers a variety of charting options.DavechartDavechart is a free dot
10 Useful PHP Open source tools, 10 PHP open source In development work, the right tools are used to maximize efficiency. In addition, a large number of open
1, Ali Open source software: datax Datax is a heterogeneous data source offline Synchronization tool that is dedicated to achieving stable and efficient data synchronization between heterogeneous data sources including relational databases (MySQL, Oracle, etc.), HDFS, Hive, ODPS, HBase, FTP, and more. (Excerpt from Wikipedia) 2. Apache
Programmer's choice: Several brand new open-source tools in mobile development, open-source programmers The mobile development concept has become the primary indicator of prospective application development institutions. In view of this, it is not surprising that the mobile
[[emailprotected]~]#tarzxvfdbi-1.637.tar.gz[[emailprotected]~]# cdDBI-1.637[[emailprotected]DBI-1.637]#perlMakefile.PL[[email protected]dbi-1.637]#makeall[[emailprotected]dbi-1.637]#makeinstall[ [Emailprotected]~]#tarzxvfdbd-mysql-4.043.tar.gz[[emailprotected] ~]#cddbd-mysql-4.043cddbd-mysql-4.043[[emailprotected]dbd-mysql-4.043]# perlmakefile.pl[[emailprotected]dbd-mysql-4.043]#makeall[[email protected]DBD-mysql-4.043]#makeinstall[[emailprotected]~]#tar Zxvfcheck_mysql_health-2.2.2.tar.gz[[emai
OpenNMS is an open source enterprise-class distributed network and system monitoring and management platform based on Java/xml. OpenNMS is a great tool for managing networks, showing the status and configuration of terminals and servers in the network, providing effective information for easy management of the network. Previously studied for a period of time netw
Open-source release: VS code segment shortcuts and quick deployment tools for visual debugging, open-sourcePreface: A long time ago, I sent two articles about the custom code version and visual debugging: 1: Visual Studio tips: custom code snippets 2: Custom visual debugging tool (Microsoft. VisualStudio. DebuggerVisua
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