HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Reference (OS 3.1 - Page 186
histpd, For the I/O time histogram, shows the columns from the first column
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histpd DESCRIPTION The histpd command displays a histogram of service times for Physical Disks (PDs). SYNTAX histpd [options ] AUTHORITY Any role in the system. OPTIONS -w Specifies the World Wide Name (WWN) of the physical disk for which service times are displayed. -nodes Specifies that the display is limited to specified nodes and physical disks connected to those nodes. The node list is specified as a series of integers separated by commas (1,2,3). The list can also consist of a single integer (1). If the node list is not specified, all disks on all nodes are displayed. -slots Specifies that the display is limited to specified PCI slots and physical disks connected to those PCI slots. The slot list is specified as a series of integers separated by commas (1,2,3). The list can also consist of a single integer (1). If the slot list is not specified, all disks on all slots are displayed. -ports Specifies that the display is limited to specified port slots and physical disks connected to those port slots. The port list is specified as a series of integers separated by commas (1,2,3). The list can also consist of a single integer (1). If the port list is not specified, all disks on all ports are displayed. -devinfo Indicates the device disk type and speed. -metric both|time|size Selects which metric to display. Metrics can be one of the following: • both - (Default) Displays both I/O time and I/O size histograms. • time - Displays only the I/O time histogram. • size - Displays only the I/O size histogram. -timecols For the I/O time histogram, shows the columns from the first column through last column . The available columns range from 0 through 31. • The first column () must be a value greater than or equal to 0, but less than the value of the last column (). The default value of is 6. • The last column () must be less than or equal to 31. The default value of is 15. • The first column includes all data accumulated for columns less than the first column and the last column includes accumulated data for all columns greater than the last column. -sizecols 186 Hist Commands