Monday, January 12, 2009

Information about the jqs.exe process in Windows

By Martin Brinkmann

The Windows Task Manager is the central hub in Windows to identify running processes and applications. Most processes that get displayed are not visible on the Windows desktop and required to run the Windows operating system.

A process that is appearing quite often is jqs.exe. It is the Java Quick Starter which gets installed alongside the Java Runtime Environment on Windows XP and Windows 2000. Its purposes is to speed up the launch of Java applets on the computer system.

This is done by loading necessary files used by the Java Runtime Environment that would otherwise be loaded upon file execution. This does mean that those files will reside in computer memory all the time being regularly preloaded into memory.

The effect is a faster startup time and better user experience when loading and working with Java applets on websites and the Windows operating system.

At most times the jqs.exe process uses roughly 2 Megabytes of computer memory and another 2 Megabytes of computer memory which can raise up to 20 Megabytes at times. While that does not seem much on modern computers with Gigabytes of RAM it could still mean a waste of system resources if Java is barely used on the computer system.

The process has been designed to check the system load and other system information before starting the preload process. It will automatically postpone preloading the Java files if the system is low on memory, in high load situations or low battery.

Also, despite the high number of Input / Output processes the program initiates Windows will periodically clean the cache, assuring that jqs isnt using too much of a machines memory. The fact that this program uses very small amounts of resources means that leaving it active is not a bad idea, especially if one makes use of the Java Runtime Environment quite often.

Users with older hardware and those that do not make use of Java regularly (or at all) should consider deactivating the process to save memory and processing power. This can be done by opening the Control Panel in Windows, double-clicking the Java icon and selecting the advanced options when the panel opens.

Expand the miscellaneous selection and uncheck the box next to Java Quick Starter. On Windows 2000 and XP this option is active by default and deactivating will guarantee that jqs will not be started again. However, one must keep in mind that this could result in longer loading times for Java applets.

Windows Vista users will not notice the process as it is deactivated by default on their computer system. - 16928

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