[CentOS] unfsd scalability issues

Sat Jun 2 15:23:35 UTC 2012
Les Mikesell <lesmikesell at gmail.com>

On Sat, Jun 2, 2012 at 9:59 AM, Boris Epstein <borepstein at gmail.com> wrote:
>> Unlikely back then, either.  It's a userland implementation, subject to
>> all the same scheduling issues as any other userland app; filesystems
>> should not be implemented in userland for efficiency reasons.
> A process implemented in the userland may not be as efficient as one
> implemented as part of the kernel - but that doesn't mean it can't scale
> well, does it?

Anything that needs atomic operations is difficult to scale.  Throw in
distributed components and an extra user/kernel layer and there are
lots of ways to go wrong.

   Les Mikesell
     lesmikesell at gmail.com