jvm monitor

] is very usefulS0: Percentage of used space in vor space 0S1: Percentage of used space in vor space 1E: Percentage of space used in the Eden space areaO: Percentage of space used in the old space areaP: Percentage of space used in the perm space areaYgc: Number of young GC timesYgct: The time unit in seconds used by young GCFGC: number of full GC timesFgct: the unit of time in seconds for full GCGCT: Total time unit for garbage collection in seconds1.4Reduce the number of full GC times as much

path to the jar (if it comes from a jar).JNI is seldom used, except when using JNI or local libraries. When turned on, it will report various JNI events, such as when the local library is loaded, when the method bounces back, and again, the output changes in different JVM versions.5.command-line-xI've listed my favorite command line options available in the JVM, but there are a few more that you need to fi

Monitor the remaining time of SQL Execution, and monitor the remaining time of SQL -- Monitor the remaining time of SQL Execution. Do you know how long the running SQL takes? Do you know that the running SQL statement has completed about a few percent? Do you know how long it will take to complete running SQL statements? V $ SESSION_LONGOPS helps you. V $ SESSION

Use Aptik Battery Monitor to Monitor usage of Ubuntu laptop Battery Do you know how long your Ubuntu laptop battery has been used? How long can I use power? What is the discharge rate of the notebook battery? Do you want to know the above or more data? Now we can use the Aptik Battery Monitor graphical tool for monitoring. I have heard of the Aptik name, and it

Python to monitor the port usage of the device, python to monitor the port usage of the device This example describes how to monitor the port usage of a device using Python. Share it with you for your reference. The details are as follows: Recently, due to work requirements, the above requirements need to be reported daily O M of hundreds of port usage [], altho

The Zabbix version currently in use is 2.2.3, which comes with MySQL monitor template templates App MySQL, with only a few monitoring items. If you just want to do basic monitoring of MySQL, you can use this template, if you want to monitor the various MySQL information, such as the various state of the database, master-slave replication status, InnoDB status, and other information needs to write a template

Download and install Percona source, use Percona Toolkit or Innobackup later Wget-n--no-check-certificate RPM-IVH percona-release-0.1-4.noarch.rpm2. Installing the Percona Monitor plugin with YumYum-y Install Percona-zabbix-templatesAfter the installation, most of the files are placed under the/var/lib/zabbix/percona directory3. Create a new/conf.d/directory under the Zabbix_agent folder and copy the installation generated Percona monitoring prof

Intelligent Computer Monitor perfectly solves all operations that others want to monitor on their own computers. Many people want to know which websites, games, and chat with netizens They browsed on this computer. More broadly, I want to monitor my spouse's (husband/wife/girlfriend/boyfriend) QQ record, fearing that he or she will have problems chatting with oth

Label:The above article mentions that win's performance Monitor is a necessary tool to monitor database performance, and then I will introduce some common monitoring indicators, in fact, the disk, CPU, memory and other hardware operating indicators and the database itself like the lock Ah, the number of user connections Ah, There are parameter indicators that need attention according to their own business d

non-standard (but mostly safe) parameters provided by the JVM-for example:-xint, run the JVM in interpreted mode (this is useful for testing whether the JIT compiler is actually working on your code or verifying that there is a bug in the JIT compiler).-XLOGGC:, and-VERBOSE:GC do the same thing, but record a file without outputting it to the command Line window.JVM command-line options vary from time to ti

old generation uses tag and clearAlgorithmSo it does not compress the heap. When the collector recycles the object, it merges the adjacent space and assigns it to a large object. However, when the heap space is small and runs for a period of time, "fragments" will appear. If the concurrent collector cannot find enough space, the concurrent collector will stop, then, use the traditional marking and clearing methods for recycling. If "Fragmentation" occurs, you may need to configure the following

How does php monitor redis queues with values in the background, how does php execute scripts with values in values, and how does php monitor redis queues with values in the background and execute scripts with values? Reply content: How does php monitor redis queues with values in the background and execute scripts with values? $ Idle = 0; $ maxWait = 10;

As mentioned in the above article, Win's Performance Monitor is an essential tool for monitoring database performance. Next I will introduce some common monitoring metrics, which are nothing more than disks, CPUs, As mentioned in the above article, Win's Performance Monitor is an essential tool for monitoring database performance. Next I will introduce some common monitoring metrics, which are nothing more

　Laptop monitor How to modify desktop display With the continuous development of it technology, progress, the replacement of products, the notebook has become obsolete more and more. But can we take advantage of these outdated notebooks? The answer is yes. Today I teach you to make full use of the LCD screen of the discarded notebook, so that it can play "peripheral". But the premise is that these removable LCD screen must be good (tmds LCD screen ca

Tags: poi oca verify sudo link manually load TAC add1. Monitor MySQL with the Percona monitor pluginYum Install http://www.percona.com/downloads/percona-release/redhat/0.1-3/percona-release-0.1-3.noarch.rpmHttps://www.percona.com/doc/percona-monitoring-plugins/1.1/zabbix/index.html#installation-instructionsYum Install percona-zabbix-templates PHP php-mysql1.php script is used to collect 2.shell call this PH

different views, explaining that bytecode is definitely slower than running at full speed, and sacrificing performance to cross-platform benefits is worth it?However, the JVM has an option to translate the most frequently used bytecode into machine code and save it, a process known as instant compilation. This is really effective, and the Microsoft. NET platform also uses virtual machines.The now-in-time compilers have been pretty good, even as compe

Shell scripts monitor MySQL services and shell scripts monitor mysqlThe main content of this article describes how to monitor whether the MySQL service is normal by using shell scripts. For more information, see The general idea is to check whether the MySQL service is normal: Check whether port 3306 is started, ps to check whether the mysqld process is started,

How does Android monitor whether the app is uninstalled and android monitor and uninstall it? We know that many applications will open a browser after they are uninstalled. Please tell us why they are uninstalled. How do they know? I know many people will think of listening to uninstall broadcast android. intent. action. PACKAGE_REMOVED, but the process is killed when you are unmounted. This broadcast is t

the class is loaded, but also reports where the class is loaded, including the path to the jar, if it comes from a jar. JNI is rarely used, except when using JNI or local libraries. When opened, it reports various JNI events, such as when the local library is loaded, when the method bounces back, and again, in different JVM versions, the output changes. 5.command-line-x I've listed the command-line options that are available in the

How is the memory area of the JVM divided?In the memory partition of the JVM, some areas are thread-private, some belong to the entire JVM process, some of them throw oom exceptions, others do not, and understanding the memory partitioning and characteristics of the JVM is the basis of the problem of locating the memor