Re: [Jmol-users] Windows: Java 7 very sluggish

[Eric M. <em...@mi...>]

Thank you Angel and Pino for your reports.

Curiously, after seeing the sluggishness that I reported consistently 
for many days, now I cannot repeat it. With the same Java 1.7.0_11 on 
Windows 7, now I am getting instantaneous responses in FirstGlance in 
Jmol, and zoomto is now smooth. I am mystified, but for now, all is good.

Eric

At 2/1/13, pin...@li... wrote:

>I tried the simple page you linked and on linux ubuntu 12.04 and 
>firefox latet version works fine. It can be a problem of Jva on ur PC maybe
>
>Pino
>----Messaggio originale----
>Da: em...@mi...
>Data: 31/01/2013 21.35
>A: <jmo...@li...>
>Ogg: [Jmol-users] Windows: Java 7 very sluggish
>
>I find that Java 7 (1.7.0_11) on Windows is very sluggish. So slow 
>that it could well drive away most users of complex Jmol pages (e.g. 
>Proteopedia, FirstGlance in Jmol).
>
>Even on a very simple page such as
>http://jmol.sourceforge.net/demo/trace/
>it takes a couple of seconds for the radio buttons to work.
>
>In FirstGlance in Jmol, each button/link change of the molecular 
>view takes about 5 seconds, during which nothing happens. This 
>encourages users to click again and again, backing up stacks of 
>operations that take even longer to complete.
>
>FirstGlance has zoom up/down buttons that use zoomto. In Java 6, 
>this produces a smooth transition as the molecule gradually grows or 
>shrinks. In Java 7, the transition is very jumpy at best, and at 
>worst, is entirely lost -- the final result simply appearing 
>suddenly after a few seconds.
>
>(Incidentally FirstGlance has not worked in Internet Explorer 9 for 
>months. I have now developed a fix but it is not yet released. It 
>works in Internet Explorer 8, Firefox and Chrome on Windows.)
>
>On my Windows 7 virtual machine, when I revert to Java 6 (1.6.0_38), 
>all operations in Proteopedia and FirstGlance are instantaneous, and 
>the zoomtos are smooth.
>
>Go to Control Panel, Programs, Java to open the Java Control Panel. 
>Click the Java tab, and then the View button. All installed versions 
>of Java are listed. If you still have a 1.6 version installed, you 
>can simply uncheck 1.7 to disable it. Click OK twice and restart 
>your browser. Suddenly everything works so much faster!
>
>If you don't have 1.6 installed, you can install it (being aware it 
>has significant security risks!). Go to java.com, click downloads, 
>then "see all java downloads", then "looking for java 6?", then 
>"java 6 downloads page". Click on the Windows Offline link to 
>download an exe installer file.
>
>Because of the security risks in java, one strategy would be to use 
>your favorite browser (e.g. Firefox) for most browsing activity, 
>disabling java in that browser. Then use a different browser (e.g. 
>Chrome) for Jmol work, in which java is enabled -- but use it only 
>for Jmol web pages. As I understand it, the risk is when you visit a 
>malicious web page in a browser with java enabled.
>
>Eric
>
>
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