Messages in this thread | | | Date | Wed, 15 Oct 2003 21:03:35 +0200 (MEST) | From | Geert Uytterhoeven <> | Subject | Re: Transparent compression in the FS |
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On Wed, 15 Oct 2003, Erik Mouw wrote: > On Wed, Oct 15, 2003 at 06:33:03PM +0400, Nikita Danilov wrote: > > Trend is that CPU is getting faster and faster with respect to the > > disk. So, even if it were hard to find such a CPU to-day, it will be > > common place to-morrow. > > I'm not too sure about this. It's my feeling that CPU speed and disk > throughput grow about as fast. I don't have hard figures, so I can be > proven wrong on this.
Well, let's take some (exotic :-) examples:
- 1989: Amiga 500, 7.14 MHz 68000, expensive SCSI disk, 675 KB/s - 1992: Amiga 4000, 25 MHz 68040, IDE, 1.8 MB/s (SCSI with 5 MB/s should have been possible) - 1998: CHRP, 200 MHz 604e, UW-SCSI, 17 MB/s
The third CPU is ca. 25 times faster than the second (both in BogoMIPS as kernel cross-compiles). The disk isn't 25 faster, though.
Now you can buy a machine with a CPU that's 25 times faster again, but please show me a 400 MB/s disk...
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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