RE: raw versus Mounted File Systems

Vivek - There used to be a good paper on Oracle's website. The paper asked the question: If benchmarks show raw to be faster that file systems, why don't you see a difference in production? The answer the paper provided is that on a well-tuned OLTP system, disk isn't the bottleneck. There are many

RE: raw versus Mounted File Systems

Dennis, I think the paper you ae thinking of is Makingthe decision to use raw devices, and it's MetaLink Doc ID 29676.1. It was written by this guy named Cary Millsap, who seems to think he knows a thing or two about Oracle performance tuning;-) -Mark On Mon, 2002-11-18 at 08:28, DENNIS

RE: raw versus Mounted File Systems ...

Qs.Using Veritas for Striping across Raw Devices ,creates a RAW partition or Mounted Filesystem? Qs Like Filesysem Block Size (e.g. 8K) , is there a Concept of Block-size on raw devices / partitions ? -Original Message- Sent: Monday, November 18, 2002 1:03 PM To: Multiple recipients

RE: raw versus Mounted File Systems

Mark - Thanks very much. You are right, that Cary guy really nails those performance issues. The original paper date is 1992. I guess that if you say something about Oracle over 10 years ago and it is still relevant, that would have to qualify as a classic. Dennis Williams DBA, 40%OCP Lifetouch,

RE: raw versus Mounted File Systems ...

1)It's your choice. Both could be done. 2)No -Original Message- Sent: Monday, November 18, 2002 10:19 AM To: Multiple recipients of list ORACLE-L Qs.Using Veritas for Striping across Raw Devices ,creates a RAW partition or Mounted Filesystem? Qs Like Filesysem Block Size (e.g. 8K) ,

RE: raw versus Mounted File Systems

-Original Message- Sent: Monday, November 18, 2002 9:59 AM To: Multiple recipients of list ORACLE-L Mark - Thanks very much. You are right, that Cary guy really nails those performance issues. The original paper date is 1992. I guess that if you say something about Oracle over 10 years

RE: raw versus Mounted File Systems

I have framed a Basic Doc on RAW Versus CFS , Mounted FS I will send it directly to any who seek it for review , perusal . Thanks to all who helped in making the same -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: VIVEK_SHARMA INET: [EMAIL PROTECTED] Fat City

RE: raw versus Mounted File Systems ...

Is it possible to STRIPE a File Across a Set of RAW Devices/Disks (like RAID 0) to give IO/Load Balancing ? If so how ? Thanks P.S. Links , Docs on raw versus Mounted FS also needed. To: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] cc: Any Good Docs , Links , sources ?

RE: raw versus Mounted File Systems ...

EMC has hardware (raw) striping now. Also could be done by Veritas. Waleed -Original Message- Sent: Sunday, November 17, 2002 9:53 PM To: Multiple recipients of list ORACLE-L Is it possible to STRIPE a File Across a Set of RAW Devices/Disks (like RAID 0) to give IO/Load Balancing ?

Re: raw versus Mounted File Systems

There is an (older) paper on www.jlcomp.demon.co.uk, and some very good info on www.ixora.com.au hth connor --- VIVEK_SHARMA [EMAIL PROTECTED] wrote: Any Good Docs , Links , sources ? Need to present a paper to the Managers Thanks -- Please see the official ORACLE-L FAQ:

Re: Raw versus Mounted File-systems

Vivek, Check http://www.ixora.com.au/ Start by clicking the 'Tips' link, and read through the 'Database creation' section. Also, you could try a search on 'raw file'. It will return several more links. -Mark On Tue, 2002-10-08 at 02:03, VIVEK_SHARMA wrote: Any Notes , Docs , Links ?