$SyStat
Retrieve system statistics into string
Note: Many $functions have been deprecated in favor of Object Oriented methods. There is no OO equivalent for the $SyStat function.
This function allows retrieval of system statistics into a string.
Syntax
%string = $SyStat(stat_list, [stat8])
%string  If the length of the returned value is exactly four, %string is a binary number indicating an error code.
Otherwise, the first four (or eight if stat8 set to
The next ten bytes contain the blankpadded word 

stat_list  A string of blankdelimited words indicating the statistics to be returned. Each returned statistic is a 4 (or eight if stat8 set to 8 ) byte, unsigned, binary number; the offset of each statistic is 4 or 8 from the previous statistic, with the first statistic starting at offset 16 or byte number 17. This facilitates the use of $StatD with the returned string. For more information about available statistics, see System statistics displayed in SirMon. 
stat8  A integer that, if set, can only have a value of 8 . If set to 8, the returned value starts with an 8byte timestamp and each statistic occupies 8 bytes.

Return codes
5 Required parameter not specified 12 Invalid name in stat_list 13 STAT not linked in 14 Result string would be longer than 255 bytes
Example
The following program displays some totals for system statistics.
B %DATA IS STRING LEN 255 %DATA = $SyStat('CPU DKIO SVIO') IF $LEN(%DATA) = 4 THEN PRINT '$SYSTAT ERROR... RC = ' WITH $UNBIN(%DATA) STOP END IF PRINT 'CPU = ' WITH $UNBIN( $SUBSTR(%DATA, 17, 4) ) PRINT 'DKIO = ' WITH $UNBIN( $SUBSTR(%DATA, 21, 4) ) PRINT 'SVIO = ' WITH $UNBIN( $SUBSTR(%DATA, 25, 4) ) END