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Full Discussion: CPU performance
Operating Systems AIX CPU performance Post 302988785 by powerAIX on Tuesday 3rd of January 2017 12:28:11 AM
Old 01-03-2017
I really appriciate your help.

The system is Power 880. Its a vio client. The npiv is configured.
Network cards are FCoE Adapter on vios sharing one port to only 2 lpars.
The vios level is 2.4.2.20 and the DB oslevel is 7100-03-04.
The software is oracle 11G
The storage is assigned via IBM SVC cluster and IBM fs800 is the storage. I have only this much info anything else i need to ask storage admin.
The IBM sddpcm drivers are installed and each storage data volume has 4 active paths.
The OS volume has 2 different fcs paths.
There is no cluster for this server.

As this is a IBM storage and device drivers installed there are no pseudo disks.
The sample output of iostat as below.
==================================================================================================== ===================
Code:
Disks:                           xfers                                read                                write                                  queue                    time
-------------------- -------------------------------- ------------------------------------ ------------------------------------ -------------------------------------- ---------
                       %tm    bps   tps  bread  bwrtn   rps    avg    min    max time fail   wps    avg    min    max time fail    avg    min    max  avg   avg  serv
                       act                                    serv   serv   serv outs              serv   serv   serv outs        time   time   time  wqsz  sqsz qfull
hdisk11                2.0   8.7M  43.0   8.7M   0.0  182.0   1.5    0.2    5.4     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.1   0.0   0.0  0.0  08:00:01
hdisk5                 0.0   0.0    0.0   0.0    0.0    0.0   0.0    0.0    0.0     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.0   0.0   0.0  0.0  08:00:01
hdisk8                 0.0   0.0    0.0   0.0    0.0    0.0   0.0    0.0    0.0     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.0   0.0   0.0  0.0  08:00:01
hdisk15                3.0   2.3M  13.0   2.3M   0.0   45.0   2.1    1.0    8.1     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.0   0.0   0.0  0.0  08:00:01
hdisk19                1.0   2.7M  16.0   2.7M   0.0   48.0   1.4    0.6    3.6     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.0   0.0   0.0  0.0  08:00:01
hdisk9                 2.0   2.9M  14.0   2.9M   0.0   72.0   2.0    0.7    4.9     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.1   0.0   0.0  0.0  08:00:01
hdisk26                0.0   0.0    0.0   0.0    0.0    0.0   0.0    0.0    0.0     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.0   0.0   0.0  0.0  08:00:01
hdisk17                1.0   2.1M  13.0   2.1M   0.0   39.0   1.7    1.0    6.4     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.0   0.0   0.0  0.0  08:00:01
hdisk13                1.0   2.2M  13.0   2.2M   0.0   53.0   1.4    0.3    3.5     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.0   0.0   0.0  0.0  08:00:01
hdisk28                0.0   4.1K   1.0   4.1K   0.0    2.0   0.6    0.6    0.7     0    0   0.0    0.0    0.0    0.0     0    0   0.0    0.0    0.0   0.0   0.0  0.0  08:00:01

==================================================================================================== ===========================================

The hosts entries are managed by /etc/hosts file only and no dns server is configured. The authentication is only for local accounts so no external authentication.

The ipcs output as below

Code:
T        ID     KEY        MODE       OWNER    GROUP
Shared Memory:
m   1048576 0x01002357 --rw-------     root   system
m   2097153 0x6100e09b --rw------- pconsole   system
m   1048578 0xffffffff D-rw------- pconsole   system
m         3   00000000 --rw-r-----   oracle      dba
m         4   00000000 --rw-r-----   oracle      dba
m         5 0x5ad596a4 --rw-r-----   oracle      dba
m         6   00000000 --rw-r-----   oracle      dba
m         7   00000000 --rw-r-----   oracle      dba
m         8 0x0bf59740 --rw-r-----   oracle      dba
m 156237834 0x0d033d30 --rw-rw----     root   system
m 206569483 0xffffffff D-rw-------   oracle      dba
m  71303180 0xffffffff D-rw-------   oracle      dba
m  23068685 0xffffffff D-rw-------   oracle      dba
m  17825806 0xffffffff D-rw-------   oracle      dba
m  17825807 0xffffffff D-rw-------   oracle      dba
m  17825808 0xffffffff D-rw-------   oracle      dba
m 351272981 0xffffffff D-rw-------    oemdb      dba

---------------------------------------------------------------

The output of ps top 20
Code:
38143450 281392 /oemdata/agent_software/core/1.10.0/oracle_common/jdk/bin/java -Xmx172M -server
32245454 237240 /oemdata/agent12c/core/12.1.0.4.0/jdk/bin/java -Xmx318M -server 
10617204 195412 /usr/sbin/rsct/bin/IBM.HostRMd
 8061550 125000 ora_arc2_fininddb
 9437556 122440 ora_arcc_fininddb
 9568356 105096 ora_arc7_fininddb
11600338 104520 ora_arc6_fininddb
10879398 99016 ora_arc9_fininddb
18546830 93000 ora_arce_fininddb
 4981288 92680 ora_arc0_fininddb
18022482 91464 ora_arc4_fininddb
 8847704 86728 ora_arcg_fininddb
11075588 86664 ora_arc8_fininddb
 3605070 86216 ora_arcb_fininddb
12845242 86088 ora_arca_fininddb
 7537316 85192 ora_arci_fininddb
 7209628 84552 ora_arc5_fininddb
 4129490 84232 ora_arcj_fininddb
 7864702 80840 ora_arch_fininddb

The minperm and maxperm is
Code:
minperm = 1526905
maxperm = 45807403
minperm% = 3
maxpin% = 90

Code:
131148847278 pending I/O waits
643098287800 start I/Os
185464 pending disk I/Os blocked with no pbuf
0 paging space I/Os blocked with no psbuf
2228 filesystem I/Os blocked with no fsbuf
73 client filesystem I/Os blocked with no fsbuf
12421 external pager filesystem I/Os blocked with no fsbuf

Also the tuning parameters are provided by IBM.
Last edited by rbatte1; 01-04-2017 at 06:35 AM.. Reason: Scrutinizer changed icode tags everywhere to code tags; rbatte1 joined lines in iostat output for clarity
 

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