Timers and timing, was: MySQL Performance 6.0rc1

[Chuck Swiger]

Mark Kirkwood wrote:
> Chuck Swiger wrote:
> 
>> FreeBSD 5.4-STABLE i386
>>        null function: 0.01278
>>             getpid(): 0.51329
>>               time(): 2.54771
>>       gettimeofday(): 2.54982
>>
> 
> Chuck - very interesting results. I happen to have a PIII 1Ghz running 
> 5.4-RELEASE so thought it would be interesting to reproduce your 
> numbers. My null and getpid pretty much do, but the time functions seem 
> much quicker on my machine - some sort of regression in 5.4-STABLE maybe?
> 
>        null function: 0.01578
>             getpid(): 0.49136
>               time(): 0.83031
>       gettimeofday(): 0.78838
> 
> However, we are still slower than Linux :-(.

Interesting.  The 5.4 box was a Dell PowerEdge 2550 with a 933 Mhz P3, I think 
IIRC :-), running a kernel & world that's about two months old.

> [Running a pretty much stock kernel, except for:
> 
> #cpu        I486_CPU
> #cpu        I586_CPU
> 
> and timer.c is compiled w/o any optimization.]

That's about what my kernel looks like, and I compiled using nothing but "cc -o 
timer timer.c" as well.

-- 
-Chuck