Oracle Solaris Tunable Parameters Reference Manual

kstat Utility

kstats are data structures maintained by various kernel subsystems and drivers. They provide a mechanism for exporting data from the kernel to user programs without requiring that the program read kernel memory or have superuser privilege. For more information, see kstat(1M) or kstat(3KSTAT).

Note –

kstat data structures with system_pages name in the unix module do not report statistics for cachefree. cachefree is not supported, starting in the Solaris 9 release.