Re: [expert] problem with ATA/66

[Dan Swartzendruber]

At 01:05 PM 11/21/99 -0700, Axalon Bloodstone wrote:
>On Sun, 21 Nov 1999, Steve Philp wrote:
>[...]
>> 
>> Overall, though, I didn't notice enough of a speed difference between
>> the drive on UDMA/66 and the drive on a "normal" interface to want to
>> fight with it anymore.  I'm perfectly happy with the drive on a normal
>> interface.
>
>With it on,
>
>/dev/hda:
> Timing buffer-cache reads:   128 MB in  1.75 seconds =73.14 MB/sec
> Timing buffered disk reads:  64 MB in 21.91 seconds = 2.92 MB/sec
> 
>I'm not gonna switch it just to show you guys, but on hde cache reads hit
>around 125-150, and buffered gets up to about 5-10. A mighty big
>improvment, but....

Well, yeah, but this isn't a real meaningful test.  A real-world app is
still going to be limited primarily by how fast it can spin the platters...