What about setting the minimum frame cycle time on View? setMinimumFrameCycleTime(long minimumTime)
Can't you set this to a higher number and get reduced CPU? Mike ----- Original Message ----- From: "Fred Klingener" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, October 11, 2001 8:26 AM Subject: Re: [JAVA3D] a CPU utilization question > ----- Original Message ----- > From: "Sam" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, October 11, 2001 10:21 AM > Subject: [JAVA3D] a CPU utilization question > > > > Hi, > > > > I want to decrease the CPU utilization of my Java 3D > application. I came > > across an answer to by problem when I was going through the > Java 3D FAQ > > page and I have pasted it below: > > > > > > "How can I stop 100% CPU utilization? > > > > Java3D uses 100% CPU to gain maximum performance and number of > frames per > > second rendered. On games and many highly complex > applications, that leaves > > no time for user code to do stuff. > > To modify the priority of all the Java 3D threads running you > can use the > > static setJ3DThreadPriority() method. The values range from > > Thread.MIN_PRIORITY to Thread.MAX_PRIORITY . " > > The 100% CPU utilization is a characteristic of the > wakeupOnElapsedFrames(0) criterion. If your application can run > acceptably with less than the maximum frame rate, you can > introduce a frame delay (via a Thread.sleep(dt))in one of the > methods such as preRender() of an extended Canvas3D. > > There's some example code around in the list archives if you > search for mixed +mode. > > My life-guidance on this matter appears in Cay S. Horstmann and > Gary Cornell, _Core Java 2_, Volume II: > > "TIP: If you find yourself tinkering with priorities to make > your code work, you are on the wrong track. . ." > > The root of their caution is the OS-dependency in the VM's > implementations of thread priorities, but the parts of the VMs > and Java 3D in particular that handle small time increments are > just adjacent minefields. > > Be careful out there, > > Fred Klingener > Brock Engineering > > =========================================================================== > To unsubscribe, send email to [EMAIL PROTECTED] and include in the body > of the message "signoff JAVA3D-INTEREST". For general help, send email to > [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
