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Disk I/O Tuning

Chapter 3: ATA Tuning in LINUX

You will be happy to know that LINUX is specifically designed (as are other true "UNIXs", SCO not included) to not fragment hard drives.  Fragmentation is reduced in LINUX over Windows by usually more than 98 percent and is usually not a concern.

However, Linux takes any default drive interface settings where implemented by the developer of the ATA kernel module that interfaces to your EIDE/ATA disk drive.  At the time the driver was written, no doubt the drives were inferior to what you are currently running, not to mention it may have been written with old interface drivers as well.  Fear not!  LINUX provides the hdparm utility to reset the values for the ATA interface to take advantage of new drives and better interfaces.  Thus, if you want to tune the ATA drives in LINUX use hdparm.  In some cases, the disk IO rate increased by nearly 500 percent (a factor of 5) over pre-tuned values by the proper application of the hdparm application parameters.  The basic tuning related arguments for hdparm are:

The above text is an excerpt from:

Oracle Disk I/O Tuning
Disk IO Performance & Optimization for Oracle Databases



by Mike Ault

Remote DBA Services

Burleson Consulting can offer world-class remote Oracle database support at super-affordable prices.

Our remote Oracle DBA service provides 100% of the remote Oracle database administration needs for your company, and includes 24x7 access to our staff of 100% OCP Certified Oracle DBAs. 

We require a 12 month service commitment and include the following services:

  • Initial configuration review and problem identification
  • Installation of Oracle statistics collection mechanisms and quarterly database growth summaries
  • Hourly monitoring of your Oracle database for pending problems
  • Periodic performance analysis & identification of tuning activities
  • Twenty Four hour Oracle emergency support
  • Reporting and resolving all serious Oracle alert log messages
  • Free use of the BC TablePack, ServerPack and AuditPack services
  • Quick response emergency support for production database outages
  • Four hours of free remote DBA support every month. You can use these free hours for any DBA activity, including database analysis, system design, production migrations or personal mentoring.

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