Chapter 1. Performance Toolkit for VM at a glance 19
The time period in minutes that a problem must exist before a message is
generated. You can specify a time interval use to repeat the message if the
problem still exists.
The combination of these thresholds helps separate short peaks from real
performance problems that need investigation. Figure 1-13 shows an example of
different alert messages that are generated by threshold settings.
Figure 1-13 Alert messages generated by threshold settings
Alert messages are highlighted and do not automatically scroll. You can delete
alert messages using the DELETE subcommand followed by the line number.
(For example, to delete message lines 23 through 30, use the DEL 23-30
command.)
Note: An exceeded threshold is considered to be a problem only if both the
q1 and the qx user count are at least as high as the specified minimum. For
more detailed information, see 5.4, “System settings” on page 109.
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+23 08:37:00 FCXPER315A Cl1 time slice 2.002 exceeds limit 1.000 (Q1=01 Qx=02)
+24 08:59:00 FCXUSL317A User LNXSU1 IO/s 377 exceeded threshold 50.0 for 5 min.
+25 09:51:00 FCXUST457A PERFKLA 60% active: may need higher priority
+26 10:12:00 FCXPER315A % I/O wait (sys) 52 exceeds limit 50 (LNXRH1 .5 IO/S)
+27 10:27:00 FCXPER315A Cl1 time slice 2.002 exceeds limit 1.000 (Q1=01 Qx=03)
+28 10:27:00 FCXPER315A % I/O wait (sys) 52 exceeds limit 50 (PERFROG .5 IO/S)
*29 12:00:00 MSG FROM PERFKLA : IT IS NOW 12:00H
+30 12:32:00 FCXPER315A Cl1 time slice 2.000 exceeds limit 1.000 (Q1=01 Qx=02)
+31 12:32:00 FCXPER315A % I/O wait (sys) 55 exceeds limit 50 (PERFROG .6 IO/S)
+32 12:39:00 FCXPER315A Cl1 time slice 2.002 exceeds limit 1.000 (Q1=01 Qx=03)
+33 12:50:00 FCXCHA318A Channel 48: 67% busy exceeds limit of 40%
+34 13:03:00 FCXCHA318A Channel 49: 70% busy exceeds limit of 40%
+35 14:28:00 FCXCHA318A Channel 75: 70% busy exceeds limit of 40%
+36 14:39:00 FCXUSL317A User LNXSU2 IO/s 574 exceeded threshold 50.0 for 5 min.
+37 14:49:00 FCXUSL317A User LNXSU1 %CPU 33.9 exceeded threshold 30.0 for 5 min.
+38 14:59:00 FCXUSL317A User LNXSU1 %CPU 56.7 exceeded threshold 30.0 for 15 min.
+38 15:09:00 FCXUSL317A User LNXSU1 %CPU 37.1 exceeded threshold 30.0 for 25 min.
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