Pondering 2038

Posted Aug 15, 2013 15:46 UTC (Thu) by Cyberax (✭ supporter ✭, #52523)
In reply to: Pondering 2038 by joern
Parent article: Pondering 2038

Also, one CPU cycle is less than 1 microsecond. So if somebody wants to do precise timing then microseconds are not enough.

Nanoseconds, on the other hand, have more than enough precision for that.

Posted Aug 16, 2013 2:35 UTC (Fri) by felixfix (subscriber, #242) [Link] (4 responses)

Any processor cycle rate of more than 1 Ghz has CPU cycles less than one nanosecond.

Posted Aug 16, 2013 10:48 UTC (Fri) by Cyberax (✭ supporter ✭, #52523) [Link] (3 responses)

Uhm. 1GHz is 1 microsecond (one billionth of a second) per cycle.

2GHz is 500nsec/cycle and so on.

Posted Aug 16, 2013 12:19 UTC (Fri) by mpr22 (subscriber, #60784) [Link]

micro = 10^-6. nano = 10^-9. pico = 10^-12. A 2GHz clock has a cycle time of 500ps.

Posted Aug 16, 2013 12:21 UTC (Fri) by intgr (subscriber, #39733) [Link] (1 responses)

You're mistaken.

1 thousandth of a second is a millisecond. (1 kHz)^-1
1 millionth is a microsecond. (1 MHz)^-1
1 billionth is a nanosecond. (1 GHz)^-1

Posted Aug 16, 2013 12:32 UTC (Fri) by Cyberax (✭ supporter ✭, #52523) [Link]

You're right, of course.

Grrr... I blame too much coffee.