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A look in the Task Manager of Windows XP or Windows Vista will reveal all the applications, open windows and processes that are running on the computer system. Many of the processes displayed are important system processes that are required to run Windows properly.

One of the processes that Windows XP and Windows 2000 users will often discover is the jqs.exe process. Jqs.exe refers to the Java Quick Start process which is used on those Windows systems to start Java applets faster.

The program does that by prefetching the most commonly used Java Runtime Environment files into the PCs memory. In other words jqs will work at all time, even when Java applets are not active, periodically loading files in order to make it easier to launch up Java if its needed.

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.

If you look at the system resources consumed by the jqs.exe process you notice that is it using between 1-2 Megabytes of computer memory and virtual memory most of the time which can sometimes raise to about 20 Megabytes. The amount should not be significant on modern computer systems but could still be seen as a waste of space.

Jqs.exe will automatically check system resources before prefetching information. If the system is in a high load situation the process of prefetching data will be stopped until the situation clears up.

Many users have reported high input and output processes by the jqs.exe running on their computer system. The load and memory usage is somewhat regulated by Windows which will regularly clean the cache to reduce system load and memory usage. The process should not make to much problems on modern computer systems with lots of computer memory and processing power though.

The process can however be easily deactivated in Windows which would make sense if Java is only used frequently. To do that one would open the Windows Control Panel, locate the Java icon, double-click it and select the advanced options.

Locate the miscellaneous entry in the menu and uncheck the Java Quick Start box to disable the jqs.exe process from being launched. The box is active on Windows XP and Windows 2000 systems by default. Unchecking it will have the result that the jqs.exe process will not be loaded during system startup. It might have the result that Java applications will have a higher startup time.

Jqs.exe is not activated on Windows Vista as the system uses its own pre-loading system.

Posted on January 14th, 2009 under Computers • Tags: computer, Computers, java, java quick start, jqs.exe, process, windows. • RSS 2.0 feed • Leave a response, or trackback