Previous: Group Database Functions, Up: System Utilities


34.9 System Information

— Function File: computer ()

Print or return a string of the form cpu-vendor-os that identifies the kind of computer Octave is running on. If invoked with an output argument, the value is returned instead of printed. For example,

          computer ()
          -| i586-pc-linux-gnu
          
          x = computer ()
          => x = "i586-pc-linux-gnu"
     

— Built-in Function: isieee ()

Return 1 if your computer claims to conform to the IEEE standard for floating point calculations.

— Built-in Variable: OCTAVE_VERSION

The version number of Octave, as a string.

— Built-in Function: octave_config_info (option)

Return a structure containing configuration and installation information for Octave.

if option is a string, return the configuration information for the specified option.

— Loadable Function: getrusage ()

Return a structure containing a number of statistics about the current Octave process. Not all fields are available on all systems. If it is not possible to get CPU time statistics, the CPU time slots are set to zero. Other missing data are replaced by NaN. Here is a list of all the possible fields that can be present in the structure returned by getrusage:

idrss
Unshared data size.
inblock
Number of block input operations.
isrss
Unshared stack size.
ixrss
Shared memory size.
majflt
Number of major page faults.
maxrss
Maximum data size.
minflt
Number of minor page faults.
msgrcv
Number of messages received.
msgsnd
Number of messages sent.
nivcsw
Number of involuntary context switches.
nsignals
Number of signals received.
nswap
Number of swaps.
nvcsw
Number of voluntary context switches.
oublock
Number of block output operations.
stime
A structure containing the system CPU time used. The structure has the elements sec (seconds) usec (microseconds).
utime
A structure containing the user CPU time used. The structure has the elements sec (seconds) usec (microseconds).