My topas command shows the 100% disk busy :
Topas Monitor for host: EVENTS/QUEUES FILE/TTY
Mon Jul 9 11:49:29 2012 Interval: 2 Cswitch 14657 Readch 27.4M
Syscall 33187 Writech 5215.3K
CPU User% Kern% Wait% Idle% Physc Entc Reads 1389 Rawin 0
ALL 65.3 11.1 3.7 19.9 3.11 77.6 Writes 630 Ttyout 739
Forks 2 Igets 0
Network KBPS I-Pack O-Pack KB-In KB-Out Execs 1 Namei 1160
Total 2555.8 3039.0 3171.5 1138.8 1417.0 Runqueue 3.5 Dirblk 0
Waitqueue 1.5
Disk Busy% KBPS TPS KB-Read KB-Writ MEMORY
Total 100.0 9554.0 423.0 4280.5 5273.5 PAGING Real,MB 32768
Faults 4956 % Comp 94
FileSystem KBPS TPS KB-Read KB-Writ Steals 0 % Noncomp 4
Total 32.2K 1.1K 27.4K 4.9K PgspIn 0 % Client 4
PgspOut 0
Name PID CPU% PgSp Owner PageIn 2356 PAGING SPACE
oracle 3489998 19.9 121.2 oraprod PageOut 1298 Size,MB 24576
oracle 2211986 17.6 187.0 oraprod Sios 3663 % Used 83
oracle 1605722 10.1 166.6 oraprod % Free 17
oracle 1937608 1.7 22.0 oraprod NFS (calls/sec)
oracle 3371058 1.4 27.8 oraprod SerV2 0 WPAR Activ 0
oracle 1286236 1.2 12.5 oraprod CliV2 0 WPAR Total 0
aioserve 3801164 1.1 0.4 oraprod SerV3 0 Press: "h"-help
oracle 2142450 1.1 10.7 oraprod CliV3 0 "q"-quit
oracle 3162156 1.0 32.7 oraprod
oracle 2461744 0.8 23.6 oraprod
aioserve 3191026 0.8 0.4 oraprod
oracle 3244104 0.7 14.1 oraprod
oracle 1896628 0.5 14.1 oraprod
oraroota 991252 0.5 19212.0 root
oracle 3518704 0.5 28.0 oraprod
oracle 1028232 0.4 35.3 oraprod
oracle 4083846 0.4 13.8 oraprod
oracle 1245258 0.4 20.6 oraprod
oracle 2043980 0.4 27.4 oraprod
aioserve 1876136 0.3 0.4 oraprod
The following process is having large pgsp
ps -ef |grep 991252
root 991252 1 0 Dec 25 - 4792:11 /oracrs/apps/11.2.0/bin/orarootagent.bin
I don't know which process is responsible for this high disk utilization.
Kindly help :(