Re: raid0 slower than devices it is assembled of?

[davidsen@tmr.com (bill davidsen)]

In article <Pine.LNX.4.58.0312171129040.8541@home.osdl.org>,
Linus Torvalds  <torvalds@osdl.org> wrote:

| Let's say that you are striping four disks, with 32kB blocking. Not 
| an unreasonable setup.

Let me drop one of my pet complaints here, that the install programs of
many (most? all?) commercial releases don't give you a stripe size menu
to let the user make a decision based on intended use. Instead the
program uses the "one size fits all" approach and picks a size. As you
say here it's not unreasonable in terms of being typical, but for most
people it such for performance. As you noted elsewhere big stripes are
almost always better, and a default of 256k or so would work better for
most people.

Sorry, related flamage, but your comments welcome, since this does
affect the perception of performance of the o/s.
-- 
bill davidsen <davidsen@tmr.com>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.