jboss performance tuning

Hard Canton: "iOS Performance Tuning Series" The third, continuously updated, welcome attention.iOS Performance Tuning series: Analyze static analysis describes how to find iOS memory leaks using the static analysis method, iOS Performance

Hard Canton: "iOS Performance Tuning Series" fourth, is expected to be more than 20, continuously updated, welcome attention.Top two iOS Performance Tuning series: Analyze static Analysis, iOS Performance Tuning series: using inst

analyze and think twice before designing a ccbpm model for any business scenario integration. the correct usage of ccbpm is well known ented at http://help.sap.com. model Design palys a very important role on the performance of the business scenario in the Integration Server. A bad ccbpm design can have various perfromance issues in various runtime components (ie, AE, BPE ). note that every message entering the BPE is duplicated and every message lea

IOS Performance Tuning series: use Allocation to dynamically Analyze memory usage and optimize allocation Hardware wide: article 3 of the IOS Performance Tuning series, which is continuously updated. IOS Performance Tuning series:

Recently, due to Project Memory leakage, large-scale JVM performance tuning has been performed. , Now we will record the experience. I. JVM Memory Model and garbage collection Algorithm 1. According to the Java Virtual Machine specification, JVM divides the memory: New (young generation) Tenured (elder generation) Permanent generation (Perm) Among them, new and tenured are heap memory. The heap memory

monitor local and remote Java processes, including monitoring memory, threading, method execution time, and more.3-1 monitoring local Java processes3-2 monitoring the remote Java process4th chapter monitoring and debugging based on BtraceThis chapter takes you to learn how to install Btrace, how to write btrace scripts to monitor and debug the code in a production environment, such as obtaining parameters, return values, exceptions, line numbers, and so on for a method in a production environme

) name:@"IdleNotification" object:nil]; NSNotification *notification = [NSNotification notificationWithName:@"IdleNotification" object:nil]; [[NSNotificationQueue defaultQueue] enqueueNotification:notification 　　postingStyle:NSPostWhenIdle];} Five, memory optimization Use Autorelease pool to reduce memory spikes Six, Code details optimization 1, not in the viewwillapear time-consuming operation 2. If the key code is more efficient with C/C + + Seven, picture optim

settimeoutc) Use canvas animations appropriately, use CSS animations within 5 elements, and more than 5 using canvas animations (iOS8 can use WebGL)· High Frequency event OptimizationTouchmove, Scroll events can cause multiple renderingsA) use Requestanimationframe to monitor frame changes to make rendering at the right timeb) Increase the time interval for response changes and reduce redraw times· GPU AccelerationThe following properties in CSS (CSS3 transitions, CSS3 3D transforms, Opacity, C

the implementation of join. And this operation plays a crucial role in the secondary sort mode. Secondary sort mode refers to the user expects data to be grouped by key and wants to traverse value in a specific order. UserepartitionandsortwithinpartitionsPlus a part of the user's extra work can achieve secondary sort.ConclusionYou should now have a good understanding of all the essential elements needed to complete an efficient Spark program. In part II, you will learn more about resource invoc

Javascript's performance tuning point A, use caution to remember that the "eval" code is 100 times times slower than the "eval" code. The main reasons are: JavaScript code performs a "precompiled" operation before execution: first, it creates an active object in the current execution environment and sets those variables declared with Var to the properties of the active object, but at this point the variabl

|| Slow_launch_time | 2 |+------------------+-------+Mysql> show global status like '%slow% ';+---------------------+-------+| variable_name | Value |+---------------------+-------+| Slow_launch_threads | 0 || slow_queries | 4148 |+---------------------+-------+The configuration of the record slow query, the execution time of more than 2 seconds is slow query, the system shows that there are 4,148 slow query, you can analyze the slow query log, find the problem of SQL statements, slow query tim

, where sending data accounts for 99% of the time. Still more than the initial page load time. Finally, instead of innerjoin the table with the select method to remove the relevant data, leftjoin the table data, by looping the select result set, the data is obtained separately. After the modified development environment page load time is 0.2~0.3s, the server environment is 0.4~0.5s. Although not ideal, performance is acceptable for small systems withi