FairCom ISAM for C

SystemConfiguration Cache/Buffer Statistics

SystemConfiguration() returns nine values referenced with the following constants used as subscripts in the output array of LONG values an application can use to capture system-wide cache and buffer statistics, (cache pages hold data record images and buffers hold index nodes), allowing an application to track the use of these resources.

SystemConfiguration Return Value	Description
cfgCACHE_PAGES	Available cache pages
cfgCACHE_PAGES_INUSE	Cache pages in use
cfgCACHE_PAGES_MXUSE	Maximum cache pages used
cfgCACHE_PAGES_DED	Available dedicated cache pages
cfgCACHE_PAGES_DEDINUSE	Dedicated cache pages in use
cfgCACHE_PAGES_DEDMXUSE	Maximum dedicated cache pages used
cfgBUFFER_PAGES	Available index buffers
cfgBUFFER_PAGES_INUSE	Index buffers in use
cfgBUFFER_PAGES_MXUSE	Maximum index buffers used

Note: The dedicated cache pages are a subset of the regular cache pages.

See the following example for the use of this feature.

SystemConfiguration() Example

LONG ctcfg[ctCFGLMT];

SystemConfiguration(ctcfg);

printf("\nAvailable Dedicated Cache Pages - %ld",

ctcfg[cfgCACHE_PAGES_DED]);