Solaris/x86 rant (was: Any advice on Solaris laptops?)

[Derek Atkins]

Cole Tuininga <colet at code-energy.com> writes:

> On Thu, 2007-06-21 at 10:14 -0400, Mark Komarinski wrote:
>> On 06/21/2007 10:02 AM, Cole Tuininga wrote:
>> > On Thu, 2007-06-21 at 09:52 -0400, Thomas Charron wrote:
>> >   
>> >> So one has to ask.  What's the point?  :-)  
>> > ZFS?  :)
>> http://zfs-on-fuse.blogspot.com/
>
> Right - but because FUSE lives in userland, my understanding is that the
> performance is somewhere around 50% of what you'd see on Solaris.  On
> top of which (at least, from my meager understanding of it) you're still
> going to have to go through the Linux's VFS layer which is going to
> reduce the usefulness of ZFS significantly wrt data integrity.

Actually, the FUSE overhead is extremely low.  I've actually
measured it using tools like bonnie++ using a home-made FUSE
filesystem that effectively mirrors the underlying filesystem
(i.e., just a passthrough), and the overhead was only like 5%
compared to direct EXT2/3 access.

-derek
-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
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