-
Bug
-
Resolution: Not an Issue
-
P3
-
None
-
5.0, 6
-
x86
-
linux, windows_xp
FULL PRODUCT VERSION :
java version "1.5.0_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_03-b07)
Java HotSpot(TM) Client VM (build 1.5.0_03-b07, mixed mode, sharing)
java version "1.6.0-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b43)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b43, mixed mode, sharing)
ADDITIONAL OS VERSION INFORMATION :
Linux localhost.localdomain 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux
A DESCRIPTION OF THE PROBLEM :
System.nanotTime is documented as indicating time elapsed sinse some *fixed* point. However, under Linux (RedHat 9) it is affected by changes to the system time.
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the code below, which displays currentTimeMillis and nanoTime approximately once a second. Change the system clock (e.g. with /sbin/hwclock --date "..." --set; /sbin/hwclock --hctosys).
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
1121957273144 - 1121957273144598000
1121957274154 - 1121957274154429000
1121957630244 - 1121957275244934000
1121957631254 - 1121957276254933000
ACTUAL -
1121957273144 - 1121957273144598000
1121957274154 - 1121957274154429000
1121957630244 - 1121957630244934000
1121957631254 - 1121957631254933000
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
class ShowTimes {
public static synchronized void main(String[] args) throws Throwable {
for (;;) {
ShowTimes.class.wait(1000);
System.out.println(
System.currentTimeMillis() + " - " +
System.nanoTime()
);
}
}
}
---------- END SOURCE ----------
java version "1.5.0_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_03-b07)
Java HotSpot(TM) Client VM (build 1.5.0_03-b07, mixed mode, sharing)
java version "1.6.0-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b43)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b43, mixed mode, sharing)
ADDITIONAL OS VERSION INFORMATION :
Linux localhost.localdomain 2.4.20-8 #1 Thu Mar 13 17:54:28 EST 2003 i686 i686 i386 GNU/Linux
A DESCRIPTION OF THE PROBLEM :
System.nanotTime is documented as indicating time elapsed sinse some *fixed* point. However, under Linux (RedHat 9) it is affected by changes to the system time.
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the code below, which displays currentTimeMillis and nanoTime approximately once a second. Change the system clock (e.g. with /sbin/hwclock --date "..." --set; /sbin/hwclock --hctosys).
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
1121957273144 - 1121957273144598000
1121957274154 - 1121957274154429000
1121957630244 - 1121957275244934000
1121957631254 - 1121957276254933000
ACTUAL -
1121957273144 - 1121957273144598000
1121957274154 - 1121957274154429000
1121957630244 - 1121957630244934000
1121957631254 - 1121957631254933000
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
class ShowTimes {
public static synchronized void main(String[] args) throws Throwable {
for (;;) {
ShowTimes.class.wait(1000);
System.out.println(
System.currentTimeMillis() + " - " +
System.nanoTime()
);
}
}
}
---------- END SOURCE ----------