4. EXCEPTIONS › 4.3 Detailed Exception Descriptions › 00308: GTF Active

00308: GTF Active

FILE              TSO System Activity
SAS FILE NAME     DETAIL.TSOTSO01
SOURCE LOCATION   sharedprefix.MICS.SOURCE(DYTSOEXC)

SEVERITY          Impacting     (SEVERITY='I')
MANAGEMENT AREA   Performance   (MGMTAREA='PERFORMANCE')

PURPOSE      Warns that GTF recording is in process.

RATIONALE    Depending on the options with which it is
             started, IBM's Generalized Trace Facility
             Service Aid can impose a large overhead on the
             system.  Typically, GTF is used as a last resort
             in solving a critical system problem.  Such
             problems often occur when the load on the system
             is the highest and the extra CPU load is least
             bearable.  GTF being active can explain many
             performance degradations.

DEFINITION   This exception is noted when the data element
             TSOXGTFY (Intvls When GTF in Use) is found with
             a nonzero value.  Consult the CA MICS Data
             Dictionary for more information about this data
             element.

EXCEPTION    The SAS statements identifying the exception
STATEMENTS   situation and describing the condition are
             stored in the source member named in SOURCE
             LOCATION and are described below:

************************************************************;
*
** 00308
** GTF ACTIVE
*;
IF TSOXGTFY > 0
 THEN DO;
  EXCCODE='00308'; SEVERITY='I'; MGMTAREA='PERFORMANCE';
  EXCDESC1='GTF ACTIVE';
  EXCDESC2=' ENDTS=' || PUT(ENDTS,DATETIME19.2);
  LINK HIT;
END;

THRESHOLD    None required.
MODIFICATION