DISPLAY IOSTATS

Purpose

Display logged input/output statistics

Syntax

DISPLAY IOSTATS [TO FILE <.txt filename> | (<expC>)] | [TO PRINT]

See Also

CLEAR PROFILE, DEBUG, DISPLAY PROFILE, DO, IOSTATS(), LIST IOSTATS, LIST PROFILE, PROFILE, SET COMPILE, SET DCACHE, SET DEVELOPMENT, SET ICACHE, SET IOLOGGING, SET IOSTATS, SET LOCKTYPE, SET NETWORK, SET PROFILE, SET REPLICATION, SET SYSLOGGING

Description

The DISPLAY IOSTATS command is used to display logged input/output statistics. SET IOSTATS must be ON for i/o statistics to be logged.

Environment settings

The first part of the display shows current settings:

• cluster
• replication
• iologging
• syslogging
• iostats
• dcache
• fcache
• icache
• dcache
• development
• compile
• locktype

Statistics

The statistics follow:

• opens
• creates
• closes
• icreates
• iopens
• icloses
• reads
• writes
• deletes
• appends
• dcachereads
• dcachewrites
• icachereads
• icachewrites
• ireads
• iwrites
• gcachereads
• gcachewrites
• gcachehits
• gcacheturns
• readlocks
• writelocks
• unlocks
• fstatfs
• keystrokes
• popens
• pcloses
• doprocs
• dofuncs
• copies
• disk reads
• disk writes
• elapsed time
• disk operations
• locking operations

DISPLAY commands differ from LIST commands in that they pause every screen until a key is pressed. You can cancel any further output at this point by pressing the [ABANDON] key. Where the output is sent to a file or printer, the pause is disabled.

Output keywords

Keyword	Description
TO <file>	The display output will be sent to the specified file. The filename can be substituted with a <expC>, enclosed in round brackets, which returns a valid filename. If no file extension is specified, then ".txt" will be used. The command SET PAGELENGTH governs the output file pagination and SET PAGEWIDTH defines the width of each page. Page numbers are centered on the bottom of the page according to width.
TO PRINT	The display output will be sent to a printer. The TO PRINT option will default to a local printer unless the command SET PRINTER TO \\SPOOLER is issued. The print request will then be spooled to the system printer, which is defined by the environment variable DB_PRINT.

Example

display iostats