Path: newssvr20.news.prodigy.com!newsmst01.news.prodigy.com!prodigy.com!prodigy.com!pd7cy2so!shaw.ca!sn-xit-03!sn-xit-04!sn-xit-01!sn-xit-06!sn-post-02!sn-post-01!supernews.com!corp.supernews.com!not-for-mail From: Daniel Morgan Newsgroups: comp.databases.oracle.server Subject: Re: Direct IO In RH 3.0 Date: Wed, 03 Mar 2004 14:59:36 -0800 Organization: ATS Message-ID: <1078354741.931429@yasure> User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 References: <403002A1.3010805@removethis.yahoo.com> <3jmc40185eud2paco6hso0alnpvbd6jbjd@4ax.com> In-Reply-To: <3jmc40185eud2paco6hso0alnpvbd6jbjd@4ax.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cache-Post-Path: yasure!unknown@oracle.advtechserv.com X-Cache: nntpcache 2.4.0b5 (see http://www.nntpcache.org/) X-Complaints-To: abuse@supernews.com Lines: 36 Xref: newssvr20.news.prodigy.com comp.databases.oracle.server:256241 Rick Denoire wrote: > Mladen Gogala wrote: > > >>file systems (XFS reports an error). Ext2 does support direct I/O, >>but ext3 has had significant problems with it. The latest versions >>of ReiserFS no longer report an error woth it, while JFS works. >>Veritas charges significant amount of money for "Quick I/O" option, >>which is, essentially, ability to do direct I/O. JFS for linux >>is described at: http://www-124.ibm.com/jfs > > > Could you provide some references to the support of direct I/O in ext2 > and ext3? If ext2 really supports direct I/O flawlessly, then it is > worth trying - what would be the trade offs here? (Since ext3 is > supposed to be more advanced - but the journaling option is not needed > for DB operations, the number + name + properties of the DB files does > not change often). > > Bye > Rick Denoire > RH 3.0 is a very very different animal than is 2.1. My understanding is that part of the incentive behind releasing a 9.2.0.5 CD pack is fixes for RH 3.0. I sure hope the rumours are correct. -- Daniel Morgan http://www.outreach.washington.edu/ext/certificates/oad/oad_crs.asp http://www.outreach.washington.edu/ext/certificates/aoa/aoa_crs.asp damorgan@x.washington.edu (replace 'x' with a 'u' to reply)