sysctl way too slow

[Atom Smasher]

On Wed, 14 Jul 2010, Ed Schouten wrote:

> So what about other sysctls? Is it just these sysctls? It may be the 
> case that these values are not simply read from some variable in the 
> kernel, but really performs some hardware calls. Still, 436 msec is 
> quite a lot of time.
===================

getting the same info on a linux box from /sys/class/power_supply/BAT0/* 
takes <10ms, even when reading all 32 files in the directory.

meanwhile, on freebsd, the other hw.acpi.* variables i've tried are either 
reasonably fast (2-7 mS) or as slow, but no slower. at least not the 
handful that i've tried.

hw.acpi.battery.* are the ones i'm actually interested in.


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