regarding hwclock

davender84 · 03-12-2009, 02:05 AM

hi
i dont understand the full output of hwclock command
when i run hwclock it gives output as below

[root@station5 ~]# hwclock
Thu 12 Mar 2009 12:31:45 PM IST -0.012157 seconds

i want to know that what does last part (-0.012157 seconds) of the output means pls help me

norobro · 03-13-2009, 12:46 PM

I was curious about this too, so I took a look at the source code and found the following:

Code:

/*----------------------------------------------------------------------------
  Display on Standard Output the value of the Hardware Clock, which is described by these arguments:
...
     referenceTime: The system time at which this program started (so,the moment at which the user wanted to know the time)

     readTime: The system time at which we read the clock.
...
*/
...
float const displayDelay = time_diff(readTime, referenceTime);
...  
 printf("%s %s  %.6f seconds %s\n", 
               ctime2(hclockTime),
               synchronized ? "" : "+", -(displayDelay), 
               brokenTime.tm_isdst ? tzname[1] : tzname[0]);

¿Claro?

davender84 · 03-14-2009, 02:38 PM

Quote:

Originally Posted by norobro

I was curious about this too, so I took a look at the source code and found the following:

Code:

/*----------------------------------------------------------------------------
  Display on Standard Output the value of the Hardware Clock, which is described by these arguments:
...
     referenceTime: The system time at which this program started (so,the moment at which the user wanted to know the time)

     readTime: The system time at which we read the clock.
...
*/
...
float const displayDelay = time_diff(readTime, referenceTime);
...  
 printf("%s %s  %.6f seconds %s\n", 
               ctime2(hclockTime),
               synchronized ? "" : "+", -(displayDelay), 
               brokenTime.tm_isdst ? tzname[1] : tzname[0]);

¿Claro?

thanks for your support i got the answer