Timers and timing, was: MySQL Performance 6.0rc1

[David Xu]

Run it on IBM thinkpad T43:
       null function: 0.00435
            getpid(): 0.27038
              time(): 4.67393
      gettimeofday(): 4.66421

gettimeofday is horribly slow.
The system has Intel 915PM chipsets, Pentium 1.86Ghz,
powerd daemon is turned off.