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  The I/O Performance Monitor

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hIOmon Documentation

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The documentation below is provided in Adobe® PDF format and requires the Adobe Acrobat® Reader™ to be viewed  You can download a free copy of the Acrobat Reader at the Adobe web site.

Also note that the tutorials mentioned below require the use of the free Adobe Macromedia® Flash® Player.  Documents that are included within the respective hIOmon software installation package are identified below by an asterisk ("*") for the hIOmon I/O Performance Monitor and a number sign ("#") for the hIOmon Disk I/O Ranger.

Product Info

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Architecture

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Datasheets and Articles

A one-page "Success Fact Sheet" article published by IBM that describes and highlights the successful collaboration between hyperI/O LLC and IBM.   This collaboration helped expedite the integration of hIOmon with the IBM Tivoli Monitoring solutions, resulting in the hIOmon "Add-On Support for IBM Tivoli Monitoring" which has been validated by IBM as "Ready for IBM Tivoli software". 

Installation Documents and Licensing Agreement

The following documents pertain to the installation of the hIOmon software:  

This ReadMe file provides a brief product description and operation overview, installation instructions, support information, and software release notes for the hIOmon Disk I/O Ranger (hDIOR) software.

This file specifies the hyperI/O LLC "End-User Software License Agreement (EUSLA)"; it provides the terms and conditions for the use (including installing and copying) of the hIOmon Disk I/O Ranger (hDIOR) software.

This ReadMe file provides a brief product description and operation overview, installation instructions, support information, and software release notes for the hIOmon I/O Performance Monitor (hIOPM) software.  

This file specifies the hyperI/O LLC "End-User Software License Agreement (EUSLA)"; it provides the terms and conditions for the use (including installing and copying) of the hIOmon I/O Performance Monitor (hIOPM) software.

User Guides

This document provides information about how to use the hIOmon Disk I/O Ranger (hDIOR).  It includes a brief overview of hIOmon Disk I/O Ranger, along with detailed descriptions of the various displays, control commands and other facilities supported by the hIOmon Disk I/O Ranger software.

This document provides information about how to use the hIOmon I/O Performance Monitor (hIOPM).  It includes a brief overview of hIOmon and its architecture, along with detailed descriptions of the various displays, control commands and other facilities supported by the hIOmon software.

This document provides information about how to use "Add-Ons" provided for use with the hIOmon I/O Performance Monitor (hIOPM).  These "hIOmon Add-Ons" are auxiliary software utilities that are targeted towards specific tasks and that leverage the extensive functionality of the hIOmon software.

This document provides detailed information specific to the hIOmon "Add-On Support for IBM Tivoli Monitoring" and its use with the hIOmon I/O Performance Monitor software (hIOPM).  The information about this hIOmon Add-On, which has met the IBM specifications for validation as "Ready for IBM Tivoli software", includes step-by-step instructions on how to install and configure the associated hIOmon "IBM Tivoli Monitoring (ITM) Intelligent Remote Agent (IRA)". 

Tutorials

Presentations

This presentation provides a short overview of the hIOmon I/O Performance Monitor.  Topics such as the "why, what, and how" regarding hIOmon are briefly covered.  Some of the major features and benefits of hIOmon are also described in an abbreviated fashion.

A short presentation (12 slides content-wise) that is an abridged version of the information describing the hIOmon "DataTransferred/Time Index (DXTI)" metric made available by the hIOmon software for display and export.  The DXTI metric provides a simple, "high-level" means for relative comparison of I/O operation performance; it resembles the "fuel economy" index for an automotive vehicle (i.e., "miles-per-gallon") as an overall measure of "performance efficiency".

This short presentation (about 10 slides content-wise) covers several key concepts related to taking a top-down, application-perspective approach in regards to disk I/O operations and their performance.  Several illustrative examples using empirical metrics collected by hIOmon are also included within this presentation, which was given at the Rocky Mountain Windows Technology User Group (RMWTUG) meetings in June 2008.

Another short presentation (again about 10 slides content-wise) that discusses the effectiveness of the system file cache and how much of an application's I/O activity actually goes to disk. Examples using empirical metrics collected by hIOmon are included within this presentation, which was given at the Rocky Mountain Windows Technology User Group (RMWTUG) meetings in July 2008.

A short presentation (about 16 slides content-wise) that discusses how the system can be fetching your files unbeknownst to you - and why you see disk drive lights that periodically blink on "idle" systems.  I/O trace examples collected by hIOmon are included within this presentation, which was given at the Rocky Mountain Windows Technology User Group (RMWTUG) meetings in August 2008.

hIOmon White Papers

A technically-oriented paper that offers a comprehensive, detailed, in-depth analysis of file I/O performance monitoring and its necessity.  

Related Webcasts

A Storage Networking Industry Association (SNIA) Solid State Storage Initiative (SSSI) webcast that was presented by Tom West (President of hyperI/O LLC) and Eden Kim (CEO, Calypso Systems).  This BrightTALK webcast reviews how disk I/O operations pass through the I/O software/hardware stack and how this traversal can impact I/O performance, including I/O performance testing.  The major components of the I/O stack are briefly discussed. Applicability to the SNIA Solid State Storage Performance Test Specification (PTS) is also highlighted.  An Acrobat PDF version of the webcast can be downloaded at the SSSI Storage Education page (under the "Presentations" section).

hyperI/O^sm -  improving the performance of storage I/O in computer systems