Difference between revisions of "DISPLAY IOSTATS"
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==Purpose== | ==Purpose== | ||
| − | + | Display logged input/output statistics | |
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==Description== | ==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==== | ====Environment settings==== | ||
| − | The first part of the | + | The first part of the display shows current settings: |
* [[SET CLUSTERING|cluster]] | * [[SET CLUSTERING|cluster]] | ||
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* disk operations | * disk operations | ||
* locking operations | * locking operations | ||
| − | |||
DISPLAY commands differ from LIST commands in that they pause every 17 lines 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. | DISPLAY commands differ from LIST commands in that they pause every 17 lines 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==== | ||
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|- | |- | ||
|} | |} | ||
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==Example== | ==Example== | ||
Revision as of 15:40, 25 June 2009
Contents
Class
Performance and Optimization
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 CLUSTERING, SET COMPILE, SET DCACHE, SET DEVELOPMENT, SET ICACHE, SET IOLOGGING, SET IOSTATS, SET LOCKTYPE, 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 17 lines 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