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Comparing ASM to Filesystem in benchmarks (Doc ID 1153664.1)

Last updated on SEPTEMBER 26, 2018

Applies to:

Oracle Database - Standard Edition - Version 10.2.0.5 to 10.2.0.5 [Release 10.2]
Oracle Database - Enterprise Edition - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

Purpose

There has been alot of incorrect methods on measuring performance between filesystems and ASM. This is particularily important for customers migrating from filesystem to an ASM based environment.  This document will, at a high-level, review the typical pitfalls when comparing or benchmarking filesystems to ASM.

Scope

The audience for this paper is System Admins and DBAs

Details

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In this Document
Purpose
Scope
Details
 ASM Performance vs. Filesystems
 Problem:
 Background:
 Filesystem performance vs. ASM
 Leveling the playing field:
 Filesystem features and ASM
 o Read ahead pre-fetch
 o Filesystem Write I/O coalescing
 o Filesystem DirectIO
 Conclusion:
References

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