linux-kernel - Re: [GIT PULL] Ext3 latency fixes

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 for Android: free password hash cracker in your pocket

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

Date:	Sat, 4 Apr 2009 15:19:19 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Theodore Tso <tytso@....edu>
cc:	Jens Axboe <jens.axboe@...cle.com>,
	Linux Kernel Developers List <linux-kernel@...r.kernel.org>,
	Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [GIT PULL] Ext3 latency fixes

On Sat, 4 Apr 2009, Linus Torvalds wrote:
> 
> Hmm. I can certainly see a very noticeable improvement.

.. and btw, just to put that into perspective - I ended up running with 
that repeated 'dd+sync+rm' in the background for quite a while, and the 
machine was in no way unusable. I don't think I saw a single "ooh, that 
feels really dead" case with anticipatory, although I saw several "bad 
stutter" cases.

Of course, with the whole "overwrite" case, things are really much 
smoother, and I can hardly notice anything happening at all. Although I 
_do_ get an occasional 200-600ms fsync hickup, and I can tell those very 
clearly. But if that was the worst I'd ever see, I'd be a very happy 
person. It's a good goal to have, I suspect.

		Linus
--
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/