How to test effect of tzupdater, once executed ?
We want to be able to see and confirm the effect of the tzupdater after we have used it to update the timezone tables in a jre. We have tried to watch the time output by a java program getting and reporting the time as it transitions the 2:00 AM time on March 11, 2007 (we reset the system clock). We cannot see any effect.
Shouldn't we be able to see the effect this way? If not this way, how?
# 2
I did the same test after applying tzupdater on Windows 2000 SP4:
1. Set the system time to 3/11/2007 1:59 AM, when the clock goes past 1:59:59 AM, my test java program shows 3:00 AM. This is what I expect.
2. Set the system time to 11/4/2007 1:59 AM, when the clock goes past 1:59:59 AM, my test java program shows 2:00 AM. Windows says 2:00 AM. This is not what I expect.
How come it appears to work for 3/11/2007 but not 11/4/2007?
fuwa at 2007-7-8 22:28:05 >
# 3
The system outwits us mortal humans.
It thinks that, since you are specifying 1:59 AM on 4 November, you surely * must * mean that you want 1:59 AM * PST * instead of 1:59 AM * PDT *. ... :-)
So, to perform this benchmark and get the desired result, you will likely need to set the time to 12:59 AM on 4 November 2007 and then wait * 61 minutes * for it to wind its way through the magic hour.
At least, this is what I had to do to get the desired result on the patches to Solaris itself. I imagine that JRE works exactly the same way.
