Active Block I/O Scheduling System (ABISS), version 7

The Active Block I/O Scheduling System (ABISS) is an extension of the
hard-disk storage subsystem of Linux, whose main purpose is to provide
a guaranteed reading and (eventually) writing bit rate to applications.

ABISS is conducted by Philips Research in Eindhoven, the Netherlands
(see http://www.research.philips.com/technologies/storage/inde...).

http://abiss.sourceforge.net/abiss-7.tar.gz
md5sum 081abbfa1d11ce268dab300576edc194
sha1sum 7851ebd768fc1a96207836b5189450c90e4ddd05

This release upgrades ABISS to the 2.6.11 kernel, brings some major
cleanup and introduces experimental support for writing with a
guaranteed rate. The highlights:

 - the "allocator" functionality has been completely removed. It
   represented a very complicated way for doing things that can be
   done much more efficiently and cleanlier in the file system driver,
   complicated the inner workings of ABISS, and wasn't of much use in
   its present state anyway.

 - removed the abiss_detach message, which was a no-op

 - this release adds an experimental mechanism for delayed allocation
   of file blocks. In its current form, this is mainly intended for
   exploring performance aspects, and may have yet undiscovered
   fascinating bugs. This may also be of interest for a broader
   audience, hence the cross-posting to linux-fsdevel.

 - ABISS now tries to guarantee the accepted data rate also when
   writing. For now, this only works for FAT and ext2, and when delayed
   allocations are enabled. All this is still very experimental and
   only works most of the time.

For additional information, please have a look at
http://abiss.sourceforge.net/

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina     werner@almesberger.net /
/_http://www.almesberger.net/______________________________...
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