MONITOR EVENT TRACING AND RECORDING Use the !ONITOR co.mand to' initiate, override the system generated monitor function, or terminate the recording of events that occur in the
real machine. This recording is always active after a V!/370 IPL (manual or automatic). The events that are recorded in the CP internal
trace table are: External interruptions SVC inte£ruptions Program interruptions !achine check interruptions I/O interruptions Free storage requests Release of free storage Entry into scheduler Queue drop Bun user requests Start I/O Unstack I/O interruptions Storing a virtual CSi Test I/O BaIt device Unstack IOBLOK or TBQBLOK KCP BTU (Network Control program Basic Transmission Unit) Clear Channel operation (CLCH) Use the trace table to determine the events that preceded a CP system failure. Por information on finding and using the internal trace table
see, the PERPOR!ANCE !EASURE!EIT Use the !ONITOB co.mand to: Display the status of the internal trace table, each implemented
class of data collection, and the specifications for automatic monitoring using spool files. Enable various classes of !ONITOR CALL. ; Specify the time intervals for timer-driven data collection. Start and stop data collection by !ONITOR using tape or spool files. Override the specifications for automatic monitoring assigned at system generation ti.e. Close the monitor spool files. I Specify device addresses to be included in or excluded from a I selection list for DASD seeks analysis.
94 V!/370 Operator's Guide
For a discussion of the !OBITOR command options, see the !!L370 The for".at of the Class I and E !ONITOB co •• and is: ftOBitor Display ENable INTerval
r , ITIPE I IILL I L .J , PERF ora \ RESPonse I SCHedule USER INSTsi. DIStap SEEKs SYSprof 1
r ,
nnnnn IMINI L .J
r STArt [to userid] [BUFFS n] I ITIPE I I I ICPTRICE L
r , STOP I SPOOL I tTIPE I ICPTRICEI L .J CLOSE IUTOdisk JON } lOFF r ,
raddr I !ODE { aOO} I I 1600 I [BUFFS I 6250 I L .J TIME {
FROP.!
FOR ALL HONE b 1 : III TO h 2 : .2 }
bh:m.
r , LIP.!IT n ISTOP I ISI!PLEI L .J SEEKS {
INclude
EXclude
DELete DISplay raddr raddr ••• }
raddr raddr ••• , " I I I n]l I I I .J lSelect one or aore of the classes, subject to the restrictions listed
with the ENIBLE operand. Section 3. CP Co •• ands 95
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