solarwinds collector

collection will be carried out, and when the exact time is dependent on the virtual machine, different virtual machines have different countermeasures.So the next question is:what are the criteria for GC () recycling? In other words, what kind of objects can be recycled? Simply put: There are no objects that are pointed to by any of the available variables. I invented the one here .... The meaning is to be able to find, what kind of is not reached?For example:A.V == C; /* *watch out! */ =

ParNew collector for JAVA garbage collector, parnew for garbage collection 1, Features The ParNew collector is a type of Garbage Collector in Java virtual machines. It is a multi-threaded version of the Serial collector. In addition to using multiple threads for garbage coll

ParallelScavenge collector for JAVA Garbage Collector The Parallel Scavenge collector is a type of Garbage Collector in Java virtual machines. Similar to the ParNew collector, it is a new generation collector. The parallel multi-t

Serial collector for JAVA Garbage Collector 1. Features The Serial collector is the most basic and oldest collector in the Java Virtual Machine. It was the only choice for collecting new generations of Java virtual machines before JDK 1.3.1. The Serial collector is a single-

Garbage Collector, java Garbage Collector Purpose: The only reason for using the garbage collector is that the recycle program no longer uses the memory. Target object: The Java Garbage Collector automatically recycles Java objects that are no longer in use and releases the memory. However, the memory allocated to t

A few days ago did a novel serial program, because afraid of updating trouble, incidentally wrote a collector, the acquisition of eight Chinese network, the function is relatively simple, can not customize the rules, but the idea is in the inside, the custom rules can be extended by themselves. Using PHP to do the collector mainly use two functions: file_get_contents () and Preg_match_all (), the previous i

Parallel Old collectors are JAVA one of the garbage collectors in a virtual machine. like the Serial old collector, it works in the older era of JAV virtual machines. This garbage collector uses multithreading and the "mark-and-organize" algorithm. It is only available in JDK 1.6 . in the focus on throughput and CPU resource-sensitive situations, they can be given priority Parallel Scavenge Plus Parallel O

PHP production Baidu Dictionary search word collector, PHP Baidu Dictionary collection device Baidu Dict Collection Sample Write the collection of Baidu Dict dictionary after the translation of all the results of the data, of course, with the 13.5w Word Library and collection of simple cases, here I write the main class dict.class.php out, project address Http://github.com/widuu/baidu_ Dict, there is a need for direct fork to be able to ~ the DA, th

Java heap is not the same as the method area, where memory allocations are uncertain, and only when the program is running can you know which objects are being created, and this part of the memory and recycling is dynamic, and the garbage collector is concerned about this part of memory.Memory allocation and recycling in the "static" area is clear, but how does the "dynamic" area determine which memory to recycle and which memory should not? As we al

Java heap memory is divided into two parts of the new generation and the old generation, the new generation mainly uses the replication and labeling-clearing garbage collection algorithm, the old generation mainly use tag-sorting garbage collection algorithm, so in Java virtual for the new generation and the old generation of different garbage collectors, JDK1.6 in sun The garbage collector for the hotspot virtual machine is as follows:If the two garb

The garbage collector is a concrete implementation of the memory recovery algorithm. Shows 7 collectors that act on different generations, and if there is a connection between the two collectors, they can be used together.Below is a collection of 7, divided into two pieces, above the new generation collector, the following is the old age collector. If there is a

Preface The garbage collection algorithm has been described in more detail here, we will introduce the specific garbage collector in the JVM, in the virtual machine specification is not how to implement the garbage collector, so each manufacturer's garbage collector may be completely different, However, we are introducing the JDK1.7-based hotspot virtual machine

1. PrefaceGarbage collector is the previous chapter of the garbage collection algorithm theoretical knowledge of the specific implementation of the different virtual machines provided by the garbage collector may be a great difference, and we must explain in advance that there is no best garbage collector, more than a universal

efficiency is very high. According to the characteristics of the Cenozoic, there are few objects that still exist, but what to do if a survivor space cannot provide enough space for the surviving object to be stored. The answer is to go to the old age to rent a little memory for emergency In some extreme cases, the target survival rate may be 100%, when more memory needs to be requested from the old age One, serial collector Cenozoic collectors, usi

), weak references (Weak Reference), virtual references (Phantom Reference) These 4 kinds of references are under the Java.lang.ref package:　　Strong references (Final Reference)Refers to references that are common in program code, such as Object obj = new Object (), as long as a strong reference exists, and the garbage collector never reclaims the referenced object.strong references have the following three features:1. A strong reference can directly

The garbage collector is a specific implementation of memory recycling, the Java virtual machine specification does not specify its implementation, different vendors, different versions of the virtual machine provides a large variety of garbage collectors. This article mainly introduces the garbage collector in the HotSpot virtual machine.Various garbage collectorsShows different garbage collectors, each of

This article is based on Zhou Zhiming's "in-depth understanding of Java virtual machines"If the collection algorithm is the method of memory recycling, the garbage collector is the specific implementation of memory recycling. There is no provision for how the garbage collector should be implemented in the Java Virtual Machine specification, so different vendors, different versions of the virtual machines, m

Read the Java Paper garbage collector type article, here to do a summary, the article part of the translation from the Java Paper GC collector, part of the summary of their own, the image from the network, which is only used to understand the expression.One, JVM GC garbage collector typeThe JVM's garbage collector is b

If the collection algorithm is the method of memory recycling, then the garbage collector is the specific implementation of memory recycling. In the Java Virtual Machine specification, how the object garbage collector should be implemented does not have any rules, so different vendors, different versions of the virtual machines provided by the collector may be qu

http://blog.csdn.net/java2000_wl/article/details/8030172 Click on the Open link HotSpot JVM Collector There are 7 collectors, divided into two, the new generation of collectors, the following is the old age collector. If there is a connection between the two collectors, it means they can be used in combination.serial (serial GC) collectorThe serial collector is