private void Getrunningappprocessinfo () {Mactivitymanager = (Activitymanager) getsystemservice (Context.activity_service);Get all the processes running in the systemlist runningappprocesseslist = mactivitymanager.getrunningappprocesses ();for
Some time ago I started to learn some basic knowledge about oracle. To facilitate exercises and operations, I installed an Oracle 10 Gb. After the installation is complete, the current database is directly deprecated. The card is terrible. The card
Describes two ways to get the memory size of Java objects.The first type: instrumentationBrief introduction:Use Java.lang.instrument's instrumentation to get the memory size of an object. By using instrumentation and by acting we can monitor the
In Linux, to see if a process is consuming memory, execute the following command to replace the [PID] with the corresponding process's PID number:
The code is as follows:
Cat/proc/[pid]/status
Description
In addition to memory information, the
1. Use as few static variables as possible, as it will always consume memory,2. Use as few string strings as possible for stitching and adding. Because a string is a fixed length, each addition creates a new temporary object, generates a garbage
1. mysql executes the query plan, Key_len represents the number of bytes used by the index, and the number of bytes is related to three conditions.mysql> CREATE TABLE T1 (v1 char (10));Query OK, 0 rows affectedMysql> CREATE index INDEX_V1 on T1 (v1);
This time do not worry, we use the PS "Storage for the Web and device format" can hit the effect we want!
1th step: Find the picture you need to adjust → look at his details → as shown in the following figure
2nd step: Use
I saw a post in the forum yesterday, saying that the memory of SQL Server has never been used. From task schedule, we can see that SQL Server only uses 88mb of memory. The actual machine has 12 GB of memory and the available memory exceeds 8
Today, when a project is refactored, it suddenly comes to the question of which members of a class will increase, affecting the size of the memory that a class occupies. C # There is no way to know how much memory an object.
First question: Quickly
I don't know if you've had this experience using Windows XP, clicking the right mouse button on the selected file suddenly slows the system down.
It was not long before someone raised such a question and turned on the resource monitor and found it,
Microsoft's latest Windows Server 2008 R2 and the latest Microsoft Office SharePoint (MOSS) Project Server Exchange Search Ser Almost all of the mainstream server products, such as ver 2010, are no longer available in 32-bit versions, and the next
At noon, I configured monitoring on a kvm, but I obviously felt that the machine card couldn't stand it, So I simply checked it.
1. View server Nic traffic
Sar-nDEV210
We can see that the network card traffic is not very large, and the NIC
Main content: function return pointer considerations , viewing the amount of memory the process can allocate#include char * favorite_fruit () {static char fruit[] = "Apple"; Without static, this function also returns the pointer as well as
Play Thin PE We need to know a lot of knowledge, the following is said the PE boot memory footprint calculation method:
The boot memory of PE is related to the core, probably the following formula (just approximate)
1, with the cabinet compressed
Recently in writing a backdoor program, inadvertently see such a piece of code, tried, and sure enough effective. The original program consumes more than 5M of memory, and sure enough to 600K, but expect the code execution efficiency may be reduced,
Data
Determine the memory used by a DataWindow or datastore
It is often necessary to know how much memory a DataWindow or datastore are using to prevent an "out of memory" error or to Facilitate debugging. When the memory usage are known,
Original excerpt from: Http://forge.mysql.com/wiki/ServerVariables
Memory-related Variables
Memory-dependent variables
These servers variables control the amount of memory allocated to the various buffers and caches MySQL.
The following server
In Oracle database systems, the parameters that play the role of tuning are called initialization parameters, which are recorded in the Initsid.ora file in Oracle 8i and previous versions, while Oracle 9i/10g/ These parameters are recorded in the
server| problem
SQL Server's memory is increasing
When the SQL Server database engine runs on microsoft®windows NT® or windows®2000, its default memory management behavior is not to get a specific amount of memory, but to get as much as possible
The original MySQL variables related to system performance are excerpted from: forge. mysql. comwikiServerVariablesMemory-RelatedVariables memory variables TheseservervariablescontroltheamountofmemoryallocatedtothevariousbuffersandcacheswithinMySQL.
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