Computer and IT knowledge - things to know
AIX - vmstat
-> install:
- It's in the perfagent.tools fileset on your AIX distribution.
- Look for bos.acct on the second installation disk.
-> #vmstat 2 20
> kthr memory page faults cpu
> ----- ----------- ------------------------ ------------ -----------
> r b avm fre re pi po fr sr cy in sy cs us sy id wa
> 0 2 81249 807 0 0 0 0 0 0 431 997 69 0 1 91 8
> 0 2 81249 800 0 1 0 0 0 0 482 2300 148 1 2 41 56
> 0 3 81249 783 0 0 0 0 0 0 507 727 203 0 3 6 91
> 0 2 81249 685 0 0 0 0 0 0 508 2588 102 1 2 68 29
> 0 2 81250 678 0 0 0 0 0 0 447 2393 138 1 1 86 11
> 0 2 81250 677 0 0 0 0 0 0 438 1594 89 0 1 94 4
> 0 2 81299 611 0 0 0 0 0 0 450 2658 129 1 2 88 9
> 0 2 81419 460 0 0 0 0 0 0 467 3099 162 2 3 79 16
>
Hi,
first look response, ( it's a long time I took AIX Perf & Tuning :-)
r = 0 : no jobs running, not so good
b = 2 : 2 jobs waiting I/O, not so good too
avm = 80K : 320 Mb of active Ram for jobs
fre = 800 : free slots ... not many
middle colums = 0 : no paging activity : good: no Ram shortage, no Disk I/O
in,sy,cs : device interrupts, system time, context switch, average load
us = 1 : doing nothing for you
sy = 2 : doing nothing for itself
idle = 90 : wasting CPU cycles
wa = 5-90 : waiting fow slow devices to answer, should be network, since not
paging
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