From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean noel Cordenner Subject: Re: i_version changes Date: Fri, 15 Feb 2008 11:31:50 +0100 Message-ID: <47B56A16.5040906@bull.net> References: <20080210073041.GA23529@lst.de> <20080212200625.GE18625@fieldses.org> <20080213125214.GA12362@lst.de> <20080213202611.GM13462@fieldses.org> <43290.192.168.1.70.1202937559.squirrel@neil.brown.name> <47B361D8.1070708@redhat.com> <47B3FE62.80106@bull.net> <47B4524B.7040008@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: NeilBrown , "J. Bruce Fields" , Christoph Hellwig , linux-fsdevel@vger.kernel.org To: Peter Staubach Return-path: Received: from ecfrec.frec.bull.fr ([129.183.4.8]:55192 "EHLO ecfrec.frec.bull.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753138AbYBOKaZ (ORCPT ); Fri, 15 Feb 2008 05:30:25 -0500 In-Reply-To: <47B4524B.7040008@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Peter Staubach a =E9crit : >> Few month ago, I ran a FFSB test on a 2.6.23 kernel enabling or not=20 >> the i_version flag. >> http://bullopensource.org/ext4/20071116/ffsb-write.html >=20 > This is good information. >=20 > A couple of questions -- what is the "-I 256" option used for the ext= 4 > mkfs? >=20 This option force the inode size to 256Bytes instead of 128. The=20 requirement is to have a 64bits i_version counter, therefore the ext4=20 inode as to be extended to 256Bytes. > What was the variance between the results of the 5 runs? Is 2% > significant or not? >=20 I didn't keep the raw results, but they were all very close to the=20 average (less than 1% of the average). - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel= " in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html