Bill, There is a chance that Linux is using direct io (most Unixes have some variant of this) and that -- at least for some I/O -- that the OS buffer cache is bypassed.
Food for thought. Ross -----Original Message----- Sent: Tuesday, November 20, 2001 6:05 AM To: Multiple recipients of list ORACLE-L Hi Steve, Did you manage to contact Bert? Would you be willing to let us know what you think was wrong with the test anyway? Many thanks - Bill. >Hi All, > >Does anyone have an email address for Bert? I looked for his email address >when I first read that article a week ago, >but did not find one. I think I know what was wrong with his test, but it >is hard to be sure because he left out a lot >of the details. > >@ Regards, >@ Steve Adams >@ http://www.ixora.com.au/ - For DBAs >@ http://www.christianity.net.au/ - For all > > >-----Original Message----- >Sent: Friday, 9 November 2001 21:20 >To: Multiple recipients of list ORACLE-L > > > >Did anyone read Bert Scalzo's article in Pipeline Newsletter this month >(http://www.revealnet.com/newsletter-v2/linux2.html)? He was benchmarking >various filesystems under Linux (EXT2, EXT3, Reiser, IBM JFS and RAW). I >was suprised (and so was he) to see worst performance on RAW devices. I >presume this is a Linux-specific issue: can anyone suggest why RAW is so >poor on Linux (or want to contest the results?!) > >Thanks >- Bill. > >At 01:29 09/11/01 -0800, you wrote: > >If you're using a volume manager (veritias, or disk > >suite), then raw is pretty much just as easy as file > >systems. > > > >You could always do this incrementally - for example, > >high io stuff (typically redo, temp, possibly > >rollback) on raw, and all the rest of file systems > >etc. > > > >hth > >connor > > > > --- Vasu Ramasamy <[EMAIL PROTECTED]> wrote: > > >Hello Gurus, > > > I am trying to install Oracle Server in the > > > environment as given > > > below. I am in the processes of laying out Physical > > > Database layout. I > > > would like to know the pros and cons of going with > > > Raw partition. > > > > > > The environment : > > > > > > Solaris 2.6 > > > Oracle 8.1.7 > > > Size of database - 60GB > > > No. of tables - 3000 (approx.) > > > Max size of few tables - 3 GB to 5 GB. > > > > > > Thanks for your help. > > > > > > > > > -- > > > Please see the official ORACLE-L FAQ: > > > http://www.orafaq.com > > > -- > > > Author: Vasu Ramasamy > > > INET: [EMAIL PROTECTED] > > > > > > Fat City Network Services -- (858) 538-5051 FAX: > > > (858) 538-5051 > > > San Diego, California -- Public Internet > > > access / Mailing Lists > > > > >-------------------------------------------------------------------- > > > To REMOVE yourself from this mailing list, send an > > > E-Mail message > > > to: [EMAIL PROTECTED] (note EXACT spelling of > > > 'ListGuru') and in > > > the message BODY, include a line containing: UNSUB > > > ORACLE-L > > > (or the name of mailing list you want to be removed > > > from). You may > > > also send the HELP command for other information > > > (like subscribing). > > > >===== > >Connor McDonald > >http://www.oracledba.co.uk (mirrored at > >http://www.oradba.freeserve.co.uk) > > > >"Some days you're the pigeon, some days you're the statue" > > > >__________________________________________________ > >Do You Yahoo!? > >Everything you'll ever need on one web page from News and Sport to Email > >and Music Charts > >http://uk.my.yahoo.com > >-- > >Please see the official ORACLE-L FAQ: http://www.orafaq.com > >-- > >Author: =?iso-8859-1?q?Connor=20McDonald?= > > INET: [EMAIL PROTECTED] > > > >Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > >San Diego, California -- Public Internet access / Mailing Lists > >-------------------------------------------------------------------- > >To REMOVE yourself from this mailing list, send an E-Mail message > >to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > >the message BODY, include a line containing: UNSUB ORACLE-L > >(or the name of mailing list you want to be removed from). You may > >also send the HELP command for other information (like subscribing). > >-- >Intasys Billing Technologies Ltd. www.intasysbilling.com >74 Commercial Street, Commercial Quay, Leith, Edinburgh EH6 6LX >tel (0)131 625 8200 fax (0)131 625 8201 email [EMAIL PROTECTED] > >-- >Please see the official ORACLE-L FAQ: http://www.orafaq.com >-- >Author: Bill Buchan > INET: [EMAIL PROTECTED] > >Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 >San Diego, California -- Public Internet access / Mailing Lists >-------------------------------------------------------------------- >To REMOVE yourself from this mailing list, send an E-Mail message >to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in >the message BODY, include a line containing: UNSUB ORACLE-L >(or the name of mailing list you want to be removed from). You may >also send the HELP command for other information (like subscribing). > >-- >Please see the official ORACLE-L FAQ: http://www.orafaq.com >-- >Author: Steve Adams > INET: [EMAIL PROTECTED] > >Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 >San Diego, California -- Public Internet access / Mailing Lists >-------------------------------------------------------------------- >To REMOVE yourself from this mailing list, send an E-Mail message >to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in >the message BODY, include a line containing: UNSUB ORACLE-L >(or the name of mailing list you want to be removed from). You may >also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Bill Buchan INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Mohan, Ross INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
