linux-ext4 - Re: Fw: Re: ICP, 3ware, Areca?

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: <m31wof2chd.fsf@bzzz.home.net>
Date:	Wed, 08 Nov 2006 00:06:22 +0300
From:	bzzz@...asimov.net
To:	Dave Kleikamp <shaggy@...ux.vnet.ibm.com>
Cc:	Andrew Morton <akpm@...l.org>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: Fw: Re: ICP, 3ware,  Areca?

>>>>> Dave Kleikamp (DK) writes:

 DK> On Tue, 2006-11-07 at 11:47 -0800, Andrew Morton wrote:
 >> Why is ext3 slow??

 DK> Allocation?  I don't see anything indicating that Bill is overwriting an
 DK> existing file, so there is block allocation and journaling overhead.  If
 DK> that's the case, it would be interesting to see how fast ext3 is when
 DK> overwriting a file.  Extents and delayed allocation should improve on
 DK> this a lot.  

this was my first suspiction as well. though in my testing on opteron
write achieved ~300MB/s consuming 100% cpu. so it would be interesting
to see vmstat output and actual cpu consumption.

thanks, Alex
-
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