linux-ext4 - Re: [ext3][kernels >= 2.6.20.7 at least] KDE going comatose when FS is under heavy write load (massive starvation)

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 linux-cve-announce 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]

Message-ID: <alpine.LFD.0.98.0704271246550.9964@woody.linux-foundation.org>
Date:	Fri, 27 Apr 2007 12:50:34 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andreas Dilger <adilger@...sterfs.com>
cc:	Marat Buharov <marat.buharov@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Galbraith <efault@....de>,
	LKML <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	Alex Tomas <alex@...sterfs.com>
Subject: Re: [ext3][kernels >= 2.6.20.7 at least] KDE going comatose when FS
 is under heavy write load (massive starvation)

On Fri, 27 Apr 2007, Andreas Dilger wrote:
>
> It's true that this is a "feature" of ext3 with data=ordered (the default),
> but I suspect the same thing is now true in reiserfs too.

Oh, well.. Journalling sucks.

I was actually _really_ hoping that somebody would come along and tell 
everybody that this whole journal-logging is stupid, and that it's just 
better to not ever re-write blocks on disk, but instead write to new 
blocks with version numbers (and not re-use old blocks until new versions 
are stable on disk).

There was even somebody who did something like that for a PhD thesis, I 
forget the details (and it apparently died when the thesis was presumably 
accepted ;).

			Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html