jms performance tuning

powerful visualization tools, Jconsole and JVISUALVM. The latter, called Oracle's main-driven multiple-in-one fault-handling tool, has been separated from the JDK as an Open-source project that can be independently developed. Introduction to Performance tuning Most people will use some virtual machine parameters or commands (such as configuration heap memory size, configure garbage collector, etc.) to do s

structures, the more tables, need to allocate more memory, a version set to 16MB(3) Innodb_log_buffer_size: The buffer used by the transaction log.7.3 Query cache is used in different environments: its function is to cache SELECT statements and result sets. The query cache will never return stale data, and any related entries in the query cache will be erased when the data is modified.If there are many write operations in the environment, it is not appropriate to open query_cache_type, and if r

The cluster NAS system built based on GlusterFS is a complex system engineering. Its overall performance is closely related to specific application features, hardware and software configurations. During system deployment, if the performance is significantly different from the estimation or experience, you need to optimize the performance according to the actual s

Performance Tuning Recommendations1. Optimize your query for query cachingMost MySQL servers have query caching turned on. This is one of the most effective ways to improve sex, and this is handled by the MySQL database engine. When many of the same queries are executed multiple times, the results of these queries are placed in a cache so that subsequent identical queries do not have to manipulate the table

Runnable because the subclass will have its own property creation that requires more overheadControl maximum concurrency: Use Java's executors class to control the thread pool maximum thread concurrency through Executors.newfixedthreadpool (nthreads).HTTP requests increase timeout, the database caches HTTP response, and the cache expiration time is determined based on the Cache-control domain in the HTTP cast message.frequently accessed, or once access consumes a large data cache.LayoutUse abst

Today we will mainly talk about the DB2 Performance Tuning design and configuration of your database. There are many database design and configuration options that can affect the query performance. For more suggestions on Database Design, see the "Planning your Physical Database Design" Best Practices article. Use constraints of DB2

Tags: comparing field name performance created description RMS emp_table style 5.7Background: The author's source data a table about 7000多万条, data size 36G, index 6G, add up table space has 40g+, similar table has 4, a total of more than 200 million Database MySQL, engine for InnoDB, version 5.7, server memory 256G, physical memory several T, hardware parameters of the leverage, but processing these data trampled a lot of pits, because For not doing t

milliseconds) above and the maximum wait time as a reference. Using the information provided by Sys.sysprocesses to count, about sys.sysprocesses use can refer to "SQL Server performance tuning from user session state analysis". This view listens for blocking information over a period of time. You can set a monitor statement to run every 10 seconds, storing blocking and blocking.Thoughts are as follows:--F

data, empirical data, and disk nominal values, it is not difficult to identify potential or already occurring problems with disk I/O when necessary, using the CPU, memory, and swap partitions. But how to avoid and solve these problems? This requires knowledge and technology for disk I/O performance optimization. Limited to the topic and length of this article, only a few commonly used optimization methods for readers to reference:1. Adjust the data l

Systemios--Carlo InspectionLayout optimizationTodo:Power optimizationTodo:Start optimizationToday's Headlines iOS client startup speed optimizationWWDC Session notes: App startup time optimizationBaidu Input Method-ios start speed optimizationHow Facebook IOS app optimizes startup timeObj China-mach-o executable fileVolume optimizationiOS installation package SlimmingToday's Headlines IPA installation package optimizationiOS slimming removal of useless mach-o files in the frameworkAn iOS packag

　　A GUI program written in Java, the function is to analyze the log, it will be a number of the same format of the text log file read into the memory analysis processing, and then merge the results output.The number of files dozens of, the file size of a few KB, logging thousands of or so, this tool can be smooth processing, easy to meet the needs.However, because of the logging scheme tuning, the logging type range has been extended from warn, the er

process. The use of Servletoutputstream as a page output does not have a problem, but it is in binary output. Therefore, in practical application to weigh the pros and cons of both. Summarize The purpose of this article is to greatly improve the performance of your application through some of the tuning techniques of the servlet and JSP, and thus enhance the performa