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19 0 0 3246612 26748
procs
memory
r
b w swap
free
21 0 0 3246608 22100 0 201 1600
18 0 0 3246608 17196 0 370 1520
11 0 0 3251116 16664 0 483 2064 138 2408 0
30 0 0 3251112 15764 0 475 2480 310 4450 0 1432 1498
System utilities to monitor CPU use
CHAPTER 13
0
273 1248 0
0
The above output is from slightly later when the query is underway. This is
evident from the user mode CPU level (us field). The buffer cache is not yet
full as page-in faults (pi field or KB paged in) are still occurring and the amount
of free memory is still going down.
page
re mf pi
po
fr
0
0
464 0
The above output is from even later. On the third line of the output it shows that
the system has reached its threshold for the amount of free memory it can
maintain. At this point, page-outs (po field or KB paged out) occur and the
level of system mode CPU (sy field) increases accordingly. This situation
results because physical memory is overallocated: the Adaptive Server IQ
buffer caches are too big for the machine. To resolve this problem, reduce the
size of one or both of the buffer caches.
Use these operating system utilities to monitor CPU usage while using
Adaptive Server IQ. On UNIX systems use:
•
command
ps
•
command (see example in the previous section)
vmstat
•
command (UNIX SystemV)
sar
On Windows NT systems use:
•
Performance Monitor
•
Task Manager
Monitoring and Tuning Performance
0
0
950
394 1180 92
faults
de sr
in
sy
0 0
0 1208 1257 1413 88 12
139
988
209 1155 91
760 1315
218 1488 88 12
199 1717 87 13
7
0
cpu
cs
us sy id
0
8
0
0
0
479
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