Devices                                                   fbt(7D)



NAME
     fbt - DTrace function boundary tracing provider

DESCRIPTION
     The fbt driver is a DTrace  dynamic  tracing  provider  that
     performs  dynamic  instrumentation at function boundaries in
     the Solaris kernel.


     The function is the fundamental unit of program text.  In  a
     well-designed  system,  the function performs a discrete and
     well-defined operation on a specified object  or  series  of
     like  objects.  Most functions are implemented by themselves
     calling functions on encapsulated objects,  but  some  func-
     tions  -so-called "leaf functions" - are implemented without
     making further function calls. The Function Boundary Tracing
     fbt provider contains a mechanism for instrumenting the vast
     majority of functions in the kernel and offering the instru-
     mentation as a set of DTrace probes.


     The fbt driver is not a public interface and you access  the
     instrumentation  offered  by  this  provider through DTrace.
     Refer to the Solaris Dynamic Tracing Guide for a description
     of the public documented interfaces available for the DTrace
     facility and the probes offered by the fbt provider.

ATRIBUTES
     See attributes(5) for a description of the following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Availability                 SUNWdtrp                    
    
     Interface Stability          Private                     
    


SEE ALSO
     dtrace(1M), attributes(5), dtrace(7D)


     Solaris Dynamic Tracing Guide








SunOS 5.11           Last change: 4 Sep 2003                    1