hi,

im a new to aix,one of aix box shows 100% cpu utilised,pl see the output

plz help me


^C# ps aux|more
USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND
root 8196 32.7 0.0 40 36 - A Jun 22 4280:09 wait
root 45078 29.8 0.0 40 36 - A Jun 22 3899:42 wait
fsdly 1060884 2.5 0.0 6048 1612 - A 07:39:06 27:23 db2agent (FIN89
fsdly 749772 1.6 0.0 16724 12244 - A 10:53:50 11:16 d 1560722 0.5 0.0 872 376 - A 07:39:00 5:42 db2pfchr 0

# vmstat 1

System configuration: lcpu=2 mem=8000MB

kthr memory page faults cpu
----- ----------- ------------------------ ------------ -----------
r b avm fre re pi po fr sr cy in sy cs us sy id wa
0 5 2741774 1026 0 152 191 788 1605 0 1281 10691 1456 6 6 12 76
1 3 2741891 1057 0 155 184 516 1543 0 1979 13057 3158 5 6 22 67
0 6 2741880 1431 0 40 327 901 2913 0 895 4297 978 5 6 6 84
0 4 2741909 1008 0 373 101 129 564 0 786 17038 1694 12 2 1 85
0 2 2741909 990 0 176 206 459 2678 0 867 1414 1204 10 4 4 82
0 2 2741908 1054 0 138 248 411 1198 0 869 3446 1495 8 6 12 74
1 2 2741971 816 0 179 220 662 1558 0 854 12710 3367 50 7 2 42
0 5 2742135 1591 0 54 333 919 2303 0 887 10100 916 10 6 0 84
0 3 2741352 1014 0 414 0 535 4689 0 1033 6208 2503 6 7 4 82

#topas
Topas Monitor for host: ctsintcofindly EVENTS/QUEUES FILE/TTY
Thu Jun 26 16:47:22 2008 Interval: 2 Cswitch 803 Readch 695.0
Syscall 4010 Writech 324.1
Kernel 5.8 |## | Reads 273 Rawin
User 2.0 |# | Writes 8 Ttyout 146
Wait 92.0 |########################## | Forks 8 Igets
Idle 0.2 |# | Execs 9 Namei 158
Runqueue 0.0 Dirblk
Network KBPS I-Pack O-Pack KB-In KB-Out Waitqueue 12.5
en0 290.3 154.0 75.5 34.4 255.9
lo0 36.4 4.5 4.5 18.2 18.2 PAGING MEMORY
Faults 1379 Real,MB 800
Disk Busy% KBPS TPS KB-Read KB-Writ Steals 327 % Comp 86.
hdisk0 100.0 1308.2 298.5 206.0 1102.2 PgspIn 95 % Noncomp 14.
hdisk1 100.0 1278.2 294.5 180.0 1098.2 PgspOut 276 % Client 14.
hdisk18 6.0 116.0 10.0 114.0 2.0 PageIn 373
hdisk14 3.0 88.0 8.0 88.0 0.0 PageOut 279 PAGING SPACE
Sios 674 Size,MB 1228
Name PID CPU% PgSp Owner % Used 64.
init 1 0.4 0.6 root NFS (calls/sec) % Free 35.
db2sysc 1351830 0.4 9.1 fsdly ServerV2 0
db2sysc 803004 0.3 12.0 fsdly ClientV2 0 Press:
syncd 135272 0.3 0.5 root ServerV3 0 "h" for help

sorry for long messsage..reply soon

Hi
We used to have some big IBM servers with AIX running on int (vers. 4.3? cannot remember anymore).
Well, it looks like your CPUs are not really 100% busy - there are just "wait"s...
... (this is reported ), so the CPUs are just waiting that stuff gets read or written to/from HDDs but are still available for real processing, and the two HDDs show that there is actually activity there going on:
So, you just have to find out which process is fiddling around with the HDDs.

Btw, do you use nmon to monitor the machine? I used it very often when I used to monitor our servers, and it was really great to have a single utility which shows everything. I am still using it now in Linux, and I am really missing it with our new Solaris-servers.