GPA Manual for G-series RVUs

Guardian Performance Analyzer (GPA) Manual – (544977-001) Page 37 of 106
Example 3-3. Global Performance Indicators
III. GLOBAL PERFORMANCE INDICATORS
1
EXCESSIVE DISPATCHING : NO
2
INDEX LEVELS > 2 : NO
3
PROCESSOR LOAD BALANCE : POOR
4
OVER UTILIZED DISK : NO
5
OVER UTILIZED NODE : NO
6
CACHE FAULT DETECTED : NO
7
OVER UTILIZED CPU : NO
8
TRANSIENT PROCESSING : NO
9
DISK VOLUME QUEUING : YES
10
BLOCKED REQUESTS : NO
11
AVERAGE CACHE HIT % : 83.20%
12
TOTAL CACHE CALL RATE: 25.00 /SEC
(1)
EXCESSIVE DISPATCHING: No excessive dispatching. A dispatch
occurs each time CPU cycles are allocated to a process. The
acceptable value for this parameter depends on the CPU type.
(2)
INDEX LEVELS > 2: No index levels greater than 2. Each index
level in a key-sequenced file can cause an additional physical I/O
operation and/or additional CPU cycles. Keeping the number of index
levels at a minimum (no more than 2) reduces the number of physical
I/O operations and/or CPU cycles required for each logical I/O
operation on the file.
(3)
PROCESSOR LOAD BALANCE: Poor processor load balance.
Referring to Example 3-1 shows that the node has two CPUs that are
out of balance.
(4)
OVER UTILIZED DISK: No overutilized disk process. None of the
percentage busy times for the disk processes on the node is
excessive.
(5)
OVER UTILIZED NODE: No overutilization of the node. The
percentage utilization of the node is below the maximum
recommended level (refer to Example 3-1).
(6)
CACHE FAULT DETECTED: No cache faults detected. A cache
fault occurs when a disk process expects to find a data block in
cache and discovers that the memory manager has removed it. The
memory manager does this whenever it needs the extra storage
space to relieve a shortage of main memory.
(7)
OVER UTILIZED CPU: No overutilization of any processors. None o
f
the percentage busy times for the CPUs on the node was found to be
excessive.
(8)
TRANSIENT PROCESSING: No excessive transient processing.
The number of dynamic PCBs on the node (see Example 3-1) is not
excessive.