Timers and timing, was: MySQL Performance 6.0rc1

[Pertti Kosunen]

Poul-Henning Kamp wrote:

>Not apart from the CPU overhead.
>
>	sysctl kern.timecounter.hardware
>
>is much more important.
>
>and all the reports here which fail to include it are mostly
>useless.
>
I have:
kern.timecounter.hardware: TSC

(
       null function: 0.01060
            getpid(): 0.41378
              time(): 0.66705
      gettimeofday(): 0.64459

FreeBSD 6.0-BETA5 #1: Sun Oct  9 13:09:23 EEST 2005
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Athlon(TM)Processor (1009.95-MHz 686-class CPU)
)