Thanks, Fabrizio. If others want to volunteer to run this for other OSs,
email me the results at [EMAIL PROTECTED], and I'll summarize on my
website. I've included a cleaned up version of the source.
Cheers,
Fred
From: "Fabrizio Nunnari" <[EMAIL PROTECTED]>
Sent: Wednesday, March 07, 2001 3:46 AM
> On Tue, 6 Mar 2001, Fred Klingener wrote:
>
> > Here's an ugly little program I wrote to probe this interaction between
> > Behaviors and the OS clock....
>
> I just tried it on a Sun Ultra 5, 128Mb ram, some ATI 8Mb video card,
> jdk 1.2.2, j3d 1.1.3.
>
> Run 3/7/01 9:38 AM
> os.name: SunOS
> os.arch: sparc
> os.version: 5.7
>
> dt OSdt
> ---- ----
> 1 19 **********
> 2 19 **********
> ...
------------------------------------------------------
/* Waittest
* March 7, 2001
* [EMAIL PROTECTED]
* Purpose: measures elapsed time between setting of wait(dt)
* and OS response.
* ...
* long start = System.currentTimeMillis();
* wt.waitStep(dt);
* int OSdt = (int) (System.currentTimeMillis()-start);
* ...
* public synchronized void waitStep(long t) {
* try{this.wait(t);}
* catch(InterruptedException e) {}
* ...
*/
import java.util.*;
import java.text.*;
class waittest {
public static DateFormat DayTime;
public static void main(String arg[]){
waittest wt = new waittest();
wt.DayTime = DateFormat.getDateTimeInstance(DateFormat.SHORT,
DateFormat.SHORT);
System.out.println("");
System.out.println("waittest.java version 03-07-01");
System.out.println("Run "+DayTime.format(new Date()));
System.out.println("os.name: "+System.getProperty("os.name"));
System.out.println("os.arch: "+System.getProperty("os.arch"));
System.out.println("os.version: "+System.getProperty("os.version"));
System.out.println("");
System.out.println("dt\tOSdt");
System.out.println("----\t----");
for (int dt = 1; dt<50; dt++) {
long start = System.currentTimeMillis();
wt.waitStep(dt);
int OSdt = (int) (System.currentTimeMillis()-start);
String s = new String();
for (int i = 0;i<OSdt; i+=2) {s = s + "*";}
System.out.println(dt+"\t"+OSdt+"\t"+s);
}
}
public synchronized void waitStep(long t) {
try{this.wait(t);}
catch(InterruptedException e) {}
}
}
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