T Tip:  The performance statistics files can be copied from the IBM FlashSystem V9000  Controllers to a local drive on your workstation by using the pscp.exe (included with  PuTTY) from an MS-DOS command prompt, as shown in this example: C:\>pscp -unsafe -load ITSO_FS9100 superuser@9.19.91.95:/dumps/iostats/*  c:\statsfiles qperf is an unofficial (no initial cost and unsupported) collection of  awk  scripts that was made  available for download from IBM Techdocs. It provides a  quick performance  overview using  the CLI and a UNIX Korn shell (it can also be used with Cygwin on Windows platforms). You can download qperf from the following address: http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/TD105947 The performance statistics files are in  .xml  format. They can be manipulated by using various  tools and techniques. Figure 8-1 shows the type of chart that you can produce by using the  IBM FlashSystem 9100 performance statistics. IBM FlashSystem 9100 controller supports real-time performance monitoring. Real-time  performance statistics provide short-term status information for the system. The statistics are  shown as graphs in the management GUI or can be viewed from the CLI. With system-level  statistics, you can quickly view the CPU usage and the bandwidth of volumes, interfaces, and  MDisks. Each graph displays the current bandwidth in megabytes per second (MBps) or I/O  per second (IOPS), and a view of bandwidth over time. Chapter 8. Hints and tips  303 Real-time performance monitoring Figure 8-1 Spreadsheet example The qperf utility GLYPH<SM590000> Specify the  -unsafe parameter when you use wildcards. GLYPH<SM590000> Use the  -load parameter to specify the session that is defined in PuTTY. 