imac performance comparison

Tags: http java using OS IO data ar CTIThe purpose of this test is to verify the performance of the current common database connection pool.TestCase Connection conn = dataSource.getConnection(); PreparedStatement stmt = conn.preparedStatement("select 1"); ResultSet rs = stmt.executeQuery(); while (rs.next()) { } rs.close(); stmt.close(); conn.close(); Test Codehttps://github.com/alibaba/druid/blob/master/src/test/java/com/alibaba/drui

Tags: PNG database Select default 6.2 ... begin INF RelativeI. Preface　　Because of the working relationship, encountered a very large number of data paging problem, the total number of data is 80 million, this is obviously not a simple paging can be solved, need to consider from many aspects, from the sub-table, sub-library and so on. But this also let me consider the problem of paging performance, in the case of different data volume, different pagin

Four serialization methods, json_encode, serialize, igbinary, and msgpack, have been tested before. PHP5.5 has not been tested yet. this test is based on PHP5.5 and has test cases, h... Four serialization methods, json_encode, serialize, igbinary, and msgpack, have been tested before. PHP5.5 has not been tested yet. this test is based on PHP5.5 and has test cases,Http://blog.csdn.net/hguisu/article/details/7651730The test cases are the same, but from this test home igbinary serialize test, as a

Label:Recently, the well-known independent benchmark evaluation agency Bankmark, for the current mainstream NoSQL database sequoiadb, MongoDB and Cassandra three NoSQL database products to do performance comparison testing and release test reports. in all of the tests, the three NoSQL database products have the same performance, no product can be defeated in all

Comparison of three serialization performance of PHP5.5 Json_encode,serialize,igbinary three kinds of serialization, before there have been related tests, PHP5.5 this aspect of the test is not, this test is based on PHP5.5, and test cases,http://blog.csdn.net/hguisu/article/details/7651730The test case is the same, just from this test on the home igbinary serialize test, as a

array with the Foreach function.Actual performance is weaker than normal foreachSixth type: Forin cycleThe code is as follows:for(j in arr) { }Brief description: This loop is used by many people, but in fact, after analysis and testing, in a number of loop traversal methodsIts efficiency is the lowestSeventh Type: Map traversalThe code is as follows:arr.map(function(n){ });Brief description: This way is also used more widely, although the use of more

Performance Comparison Between SUSE and RedHat SystemsAs early as a few months ago, SUSE officially released the SUSE Linux Enterprise 12 operating system, which enhances cluster software to improve service availability in physical, virtual, local, and global environments. The new web Console, updated OCFS2 and GFS2 file systems, and the latest ReaR updates for disaster recovery make it easy to protect core

very low under this scenario. Adjust the code, this time using a partdescription grouping of type string. Test, the results are as follows. LinQ to Non-linq First time >30min 8.738 Second time >30min 4.201 Third time >30min 4.173 Forth time >30min 4.176 With this scenario, the NON-LINQ is a time-consuming increase, and the LinQ-mode is a horrible one. Even af

2017 golang, python, php, C + +, c, java, nodejs Performance Comparison [cont.]Recently busy, This topic put a few days, today to a sequel. Previous portal: 2017-year golang, python, php, C + +, c, java, Nodejs performance comparison (golang python PHP C + + java Nodejs performance