linux-embedded.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* CELF Project proposal: UBIFS mount-time speedups
@ 2009-12-15  1:56 Tim Bird
  2009-12-20  5:46 ` Kyungmin Park
  0 siblings, 1 reply; 3+ messages in thread
From: Tim Bird @ 2009-12-15  1:56 UTC (permalink / raw)
  To: CE Linux Developers List, linux-embedded

Summary: Improve UBIFS mounting time

Proposer: Tim Bird

Description:
UBIFS is a next-generation flash-based file system for Linux.
It is a read/write file system, which supports compression
and has good performance.  However, it's mount times are not
very good.  This affects overall Linux boot time, for a UBIFS-based
embedded system.

The purpose of this project would be to investigate mount performance
issues, and try to resolve them.  One suggestion is to keep the
bad block table on flash, instead of re-scanning it on every boot.
It is not known if algorithms to do this are covered by existing
flash management patents.

Related work:
* UBIFS
** http://en.wikipedia.org/wiki/UBIFS
** http://lwn.net/Articles/276025/
* UBI2
** see portions of http://www.mjmwired.net/kernel/Documentation/filesystems/ubifs.txt
* Mount times
** http://osl.sed.hu/wiki/ubifs/index.php/Mount_results
** http://elinux.org/images/f/f8/CELFJamboree30-UBIFS_update.pdf

Scope: This project might take about 4 months

Notes:
Toshiba may already be working on this project.

=============================
Tim Bird
Architecture Group Chair, CE Linux Forum
Senior Staff Engineer, Sony Corporation of America
=============================

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2009-12-22  1:40 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-12-15  1:56 CELF Project proposal: UBIFS mount-time speedups Tim Bird
2009-12-20  5:46 ` Kyungmin Park
2009-12-22  1:40   ` Tim Bird

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).