One of our system is running 3 oracle db instances. And as per prstat o/p the
system is approximately using 78G of swap memory
**********************************************************************************************
# prstat -J -n 2,15
PROJID NPROC SWAP RSS MEMORY TIME CPU PROJECT
4038 557 31G 29G 22% 113:23:43 10% proj1
4036 466 20G 19G 15% 2359:46:4 7.6% proj2
4023 452 25G 17G 13% 67:33:14 5.8% proj3
3 44 221M 226M 0.2% 105:55:41 1.0% default
0 141 859M 543M 0.4% 801:01:21 0.3% system
1 18 333M 329M 0.3% 6:41:31 0.0% user.root
but vmstat, swap -l shows approximately 115G free swap out of total 123G
configured swap (zfs o/p)
swapfile dev swaplo blocks free
/dev/zvol/dsk/rpool/swap 256,1 16 4194288 849952
/dev/zvol/dsk/swappool/swap1 256,3 16 251658224
vmstat -S 1 3
kthr memory page disk faults cpu
r b w swap free si so pi po fr de sr lf s0 s1 s2 in sy cs us sy id
0 6 0 109555680 13515096 0 0 5119 16 21 0 8 0 0 0 0 26340 160046 36768 17 7
76
0 1 0 120233928 25672592 0 0 3992 0 0 0 0 0 0 0 0 15273 78922 15473 17 3 80
1 0 0 120220304 25661568 0 0 24 0 0 0 0 0 0 0 0 14509 66103 14879 19 2 79
0 1 0 120215496 25656360 0 0 39 0 0 0 0 0 0 0 0 17999 76188 20237 20 3 77
rpool/swap 2.03G 76.6G 2.03G -
swappool 120G 13.9G 18K /swappool
why there is difference in figures of swap in o/p of prstat and vmstat& swap -l
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