What is JQS.exe?
When you open the Windows Task Manager (by pressing CTRL-ALT-DEL) you might notice the process jqs.exe that is
running with a low priority. Jqs.exe uses about 1.5 Megabytes of computer memory and 2 Megabytes of virtual memory while running. It also initiates I/O processes frequent basis, if you have those columns activated in the Task Manager.
The JQS process is related to Java. Jqs.exe is the Java Quick Starter which was designed to improve the start-up time of Java applets and applications by prefetching (pre loading) Java Runtime Environment files frequently into memory. This has a benefit for mainly users who run Java applications on a day to day basis. Everyone else would probably benefit from disabling the Java Quick Starter. Think of a user who encounters one Java applet per month (or week), would it make sense to run the process all the time because of those few instances where it might start the application or applet faster? Quite inefficient!
Jqs.exe is definitely queries the Windows Registry on a regular basis. The performance increase might not be huge but you will free up some computer memory and some I/O processes on the computer system.
How to disable JQS.exe
Now, if you want to disable the Java Quick Starter process (JQS.exe) you can do that in the Windows Control Panel. Open the windows control panel and you find a Java entry there which will open the Java Control Panel.
A click on Advanced and the selection of Miscellaneous will display the activated Java Quick Starter entry. Uncheck the box to disable the process. This will be visible in the Windows Task Manager immediately.