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Solaris
Swap puzzle
Post 302609953 by redstone on Tuesday 20th of March 2012 03:58:08 PM
03-20-2012
Let me describe more detail on my server in order for better understanding.
This is one of the DB node in Oracle RAC which is an guest domains.
20G of physical memory is allocated to this domain.
8G + 25G of swap space as you can see from the swap -l command
As Jlliagre's request, I'm posting prstat and mdb command output.
# swap -s
total: 6713584k bytes allocated + 3409144k reserved = 10122728k used, 24978216k available
Total: 163 processes, 1076 lwps, load averages: 0.91, 0.93, 0.91
I still don't quite get what allocated and reserved really means from "swap -s" command.
Thanks.
---------- Post updated at 11:58 AM ---------- Previous update was at 11:54 AM ----------
It's not easy to read the output of some commands as the layout was changed. I wish I could post them with the original format.
This is one of the DB node in Oracle RAC which is an guest domains.
20G of physical memory is allocated to this domain.
8G + 25G of swap space as you can see from the swap -l command
As Jlliagre's request, I'm posting prstat and mdb command output.
Code:
# swap -l swapfile dev swaplo blocks free /dev/zvol/dsk/rpool/swap 256,2 16 16777200 16777200 /dev/zvol/dsk/swappool/swap2 256,1 16 50331632 50331632
# swap -s
total: 6713584k bytes allocated + 3409144k reserved = 10122728k used, 24978216k available
Code:
# prstat -Z
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
1347 root 103M 63M sleep 59 0 49:01:38 1.8% orarootagent.bi/25
1351 grid 85M 49M sleep 59 0 13:14:41 0.5% gipcd.bin/10
1789 root 89M 47M sleep 59 0 8:40:17 0.3% orarootagent.bi/11
1369 root 81M 44M sleep 159 - 7:19:33 0.3% osysmond.bin/11
1395 grid 104M 60M sleep 100 - 6:23:39 0.2% ocssd.bin/28
2276 oracle 96M 74M sleep 59 0 4:08:18 0.2% oraagent.bin/15
1654 root 132M 88M sleep 59 0 3:15:51 0.1% crsd.bin/47
1314 grid 103M 68M sleep 59 0 3:01:18 0.1% oraagent.bin/29
1471 root 71M 35M sleep 59 0 3:00:18 0.1% octssd.bin/12
711 root 153M 115M sleep 59 0 2:32:56 0.1% ohasd.bin/35
2356 oracle 8410M 2848M sleep 59 0 3:11:19 0.1% oracle/1
1794 grid 104M 78M sleep 59 0 2:23:41 0.1% oraagent.bin/21
5 root 0K 0K sleep 99 -20 1:23:15 0.1% zpool-rpool/166
1612 grid 477M 296M sleep 59 0 2:30:00 0.1% oracle/1
2362 oracle 8411M 2853M sleep 101 - 1:22:00 0.0% oracle/1
2366 oracle 8411M 2849M sleep 101 - 1:22:43 0.0% oracle/1
1406 root 149M 43M sleep 159 - 1:21:22 0.0% ologgerd/7
1485 grid 83M 47M sleep 59 0 1:14:26 0.0% evmd.bin/18
1614 grid 474M 289M sleep 59 0 1:01:04 0.0% oracle/1
1618 grid 479M 284M sleep 101 - 0:57:45 0.0% oracle/1
1382 root 75M 33M sleep 100 - 0:45:50 0.0% cssdagent/23
ZONEID NPROC SWAP RSS MEMORY TIME CPU ZONE
0 163 9871M 10G 50% 126:52:51 4.7% globalCode:
# echo ::memstat | mdb -k Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 340174 2657 13% ZFS File Data 913853 7139 36% Anon 841128 6571 33% Exec and libs 66941 522 3% Page cache 16344 127 1% Free (cachelist) 9857 77 0% Free (freelist) 380902 2975 15% Total 2569199 20071 Physical 2553055 19945
Thanks.
---------- Post updated at 11:58 AM ---------- Previous update was at 11:54 AM ----------
It's not easy to read the output of some commands as the layout was changed. I wish I could post them with the original format.
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Last edited by jim mcnamara; 03-20-2012 at 06:02 PM..
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