Re: disk speeds and tweaks
David Z Maze <dmaze@debian.org> writes:
> de|ire <delire@selectparks.net> writes:
>> so if a 5400 rpm is the fastest laptop drive available, what is the
>> rpm of the standard drive?
4200 rpm is the standard.
> (I don't actually have an answer, but I strongly suspect that drives
> with a higher rotation speed [and better performance] will suck up
> noticably more battery life. It seems like for PC hard drives, 5400
> and 7200 RPM are the standard options.)
I just got a Dell with a 5400 rpm drive, and a 2.0 GHz cpu. I was
quite worried that these would cause my battery life to be horrible.
Well, I haven't done a careful test, but apm estimates that I'll get
a bit over 3 hours on one battery, which is not too bad. (On battery
power the cpu runs as 1.2 GHz.)
>> has anyone played arond with kernel support for fast DMA on their
>> lappie? keen to know if i can get any better on my dell i8k.
>
> I've played with it some on mine (a Dell Latitude C600, not an
> Inspiron). I didn't notice any particular performance improvement
> from playing with the options;
I got a factor of 4 speed-up as measured by hdparm -t by doing
hdparm -d 1 /dev/hda
Dan
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