linux-kernel - Re: New filesystem for Linux

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 4 Nov 2006 11:53:02 +0100
From:	Jörn Engel <joern@...nheim.fh-wedel.de>
To:	dean gaudet <dean@...tic.org>
Cc:	Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>,
	linux-kernel@...r.kernel.org
Subject: Re: New filesystem for Linux

On Fri, 3 November 2006 11:00:58 -0800, dean gaudet wrote:
> 
> it seems to me that you only need to be able to represent a range of the 
> most recent 65536 crashes... and could have an online process which goes 
> about "refreshing" old objects to move them forward to the most recent 
> crash state.  as long as you know the minimm on-disk crash count you can 
> use it as an offset.

You really don't want to go down that path.  Doubling the storage size
will double the work necessary to move old objects - hard to imagine a
design that scales worse.

CPU schedulers, btw, take this approach.  But they cheat, as they know
the maximum lifetime of their objects (in-flight instructions, rename
registers,...) is bounded to n.  Old objects are refreshed for free.
http://www.chip-architect.com/news/2003_09_21_Detailed_Architecture_of_AMDs_64bit_Core.html

Jörn

-- 
A defeated army first battles and then seeks victory.
-- Sun Tzu
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/