Download PDF by Jack Shirazi: Java Performance Tuning

By Jack Shirazi

ISBN-10: 0596000154

ISBN-13: 9780596000158

It doesn't matter what language they're programming in, builders constantly want issues could run quicker! specially whilst writing mission-critical functions, no one desires to be constrained via the programming surroundings. Java functionality Tuning presents the entire information you want to understand to "performance tune" any form of Java application and make Java code run considerably speedier. Java functionality Tuning includes step by step directions on all points of the functionality tuning method, correct from such early issues as environment pursuits, measuring functionality, and selecting a compiler. There are large, distinct examples for tuning many components of an program, and sure pitfalls are pointed out. The booklet additionally presents functionality tuning checklists that let builders to make their tuning as accomplished as attainable.

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Object)] TCP Connection(3)void setNumber(int)] If you can install your own socket layer, you may also want to install a customized logging layer to provide details of the communication. An alternative way to trace communications is to replace the sockets (or other underlying communication classes) directly, providing your own logging. In the next section, I provide details for replacing socket-level communication for basic Java sockets. In addition to Java-level logging, you should be familiar with system- and network-level logging facilities.

The first field is the primitive data type (array dimensions and data type given by letter codes listed shortly), the second field is the number of arrays, and the third is the total number of bytes used by all the arrays. This example shows 174 char arrays taking a combined space of 19,060 bytes, and 5 byte arrays taking a combined space of 19,200 bytes. The reported data does not include any arrays that may have been garbage collected before the end of the process. For this reason, the section is of limited use.

A complex page with many parts presented from multiple sites can take longer to display completely than one simple page with 10 times more data. Many different sites are involved in displaying the complex page; each site needs to have its server name converted to an IP address, which can take many network transfers,[9] and then each site needs to be connected to and downloaded from. The simple page needs only one name lookup and one connection, and this can make a huge difference. - 49 - O’reilly - Java Performance Tuning On the other hand, if the amount of data is large compared to the connection bandwidth (the speed of the Internet connection at the slowest link between your client and the server machine), the limiting factor is that bandwidth, and so the complex page may display more quickly than the simple page.

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Java Performance Tuning by Jack Shirazi

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