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  The I/O Performance Monitor

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hIOmon Screen Shots -
 Command Line Interface (CLI) Display Examples

Product Info

The hIOmon I/O Performance Monitor includes a software component that provides "command-line-interface (CLI)" support for Microsoft® Windows® 7, Windows Vista™, Windows XP, Windows Server 2003, and Windows Server 2008/R2.  This hIOmon CLI component is an executable file that can be run from the command line within the DOS Command Prompt window and which provides an alternate means of controlling the overall operation of hIOmon and of displaying, in a simple and efficient manner, a set of real-time summarized file I/O operation performance information collected by hIOmon.  These displays provide a summarized profile of the file I/O operations observed and monitored by the hIOmon I/O Monitor in accordance with the selected Filter Selection.

Features

Architecture

Screen Shots

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Supporting a comprehensive set of vital I/O performance metrics (including minimum, average, and maximum response times; I/O Operations per Second (IOPS); data transfer sizes and rates; random and sequential file access counts and percentages (and respective data transfer amounts); system file cache metrics (including "hits" and "misses"); queue lengths, idle times and more), the various hIOmon CLI displays let you easily see the actual I/O performance of your individual files on a file-level basis (as well as device and/or process basis).  The hIOmon CLI also enables the use of simple administrative scripts (e.g., in batch applications) to control the operation of hIOmon.

The following screen shots include an example display of the types of commands that can be issued to the hIOmon Manager to control the overall operation of hIOmon.  The screen shots also include two examples of the I/O Summary displays provided by the hIOmon CLI support. The first example shows the real-time summarized I/O operation performance metrics for a specific file; the second example also shows the real-time summarized I/O operation performance metrics for a specific file, but this time including extended file-system information about the respective file.  Note that displays for specific Device Summaries are also supported by the hIOmon CLI support.

NOTE:

In addition to its CLI support, the hIOmon I/O Performance Monitor also features support for other client interfaces, including the hIOmon Presentation Client, the hIOmon Windows® Performance/System Monitor support, and the hIOmon WMI Browser support.  And besides support for standard Excel standard charting/graphing functions, the hIOmon software package includes "hIOmon Add-Ons" that provide hIOmon Excel Template/Macros for easily and quickly generating Microsoft® Office Excel Pivot Tables/Charts. 

   CLI Filter Selection Commands Example

The screen shot below shows the use of the '?' parameter to display the various command options available for the "mfs" parameter when used together with the hIOmon CLI 's' (set/activate) command.  For example, you can use the hIOmon CLI "-s mfs ProdSys1" command and parameter options to activate the Filter Selection named "ProdSys1".  In addition to activating a particular Filter Selection, additional parameter options are provided to add a filter to a specific Filter Selection, make a particular Filter Selection the default Filter Selection, rename a Filter Selection, etc.

Performance Metrics for a Specific FILE

The screen shot below shows the display of the real-time summarized I/O operation performance metrics for a specific file named "pagefile.sys" located on the "C" drive.  The display illustrates the comprehensive set of performance metrics provided by hIOmon for a specific file on a summarized basis.  The display also shows the notification that several alerts have occurred.  Notice that no information is provided for "control I/O operations" (i.e., the CTL IOP count value is zero) since the active Filter Selection specified that this particular type of I/O operation was not to be monitored by the hIOmon I/O Monitor.

Performance Metrics for a Specific FILE with Extended File-System Information

The screen shot below shows an example of real-time summarized I/O operation performance metrics for a specific file.  This display includes a comprehensive set of I/O performance metrics, including system file cache metrics (e.g., SystemCache IOP count, data transfer amounts, random and sequential "hit" and "miss" counts and percentages, and overall read/write hit percentage).  The "-? defstat" hIOmon CLI command can be used to display a definition of the various values shown for a particular metric (e.g., -? defstat "Read SystemCache IOP Count").

The screen shot below also shows an example of real-time summarized I/O operation performance metrics for a specific file.  In this case, however, the hIOmon CLI command used to query performance metrics for the same specific file includes an appended "+" option.  This "+" option indicates that extended information about the specified file should also be included within the display output.  This extended information includes sequential access counts, percentages and data transfer amounts along with various additional SystemCache counts and percentages.  The extended information also consists of additional information about the file that has been retrieved from the file system itself (e.g., the number of fragments on disk that comprise the file, the file system file attributes for the file, the serial number of the volume that contains the file, the system-supplied unique identifier associated with the file, and the time stamps for file creation, last access, and last write (according to the file system)). 

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