Solaris 10, wrong available memory display. 16G lost.

Question

Hello.
I have a sunfire t2000 and has been recently upgraded with 16G of extra ram. Now prtdiag displays 32G Memory Size (32760 Megabytes) but after i reboot the server i only have 13G available RAM (prtdiag -a, top, vmstat) with any user' processes running or any zones running. 16G of ram lost :( . I googled for some info on how to setup new memory correctly with no success.
Do you have any idea why i can't use the whole 32G?
could you please help me out?
Thanks in advance.

Answer 1

[root@master-db 05:01 PM /]# mdb -k
Loading modules: [ unix krtld genunix specfs dtrace ufs sd px md ip hook neti sctp arp usba fcp fctl qlc nca ssd lofs zfs random logindmux ptm cpc sppp crypto fcip nfs ipc ]
First of all, thank you for your answers.
I friend found that kernel is using 22G of RAM!!?
Check this:
[root@master-db 05:01 PM /]# mdb -k
::memstatPage Summary Pages MB %Tot
Kernel                    2908979             22726   70% <----- I ran the same command in a machine with 16G (another T2000) and kernel is just using 1.4G
Anon 658774 5146 16%
Exec and libs 3812 29 0%
Page cache 56808 443 1%
Free (cachelist) 40195 314 1%
Free (freelist) 508589 3973 12%
Total 4177157 32634
Physical 4110788 32115
Now what we can see is that kernel is wasting ram in some process i can't find. Check this:
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
28240 oracle 4945M 4757M cpu1 0 0 0:41:11 3.1% oracle/11
28292 oracle 4945M 4757M cpu12 0 0 0:24:06 3.1% oracle/11
28135 oracle 4930M 4743M sleep 59 0 0:01:37 0.1% oracle/1
28337 root 3536K 3528K cpu24 59 0 0:00:00 0.0% prstat/1
885 noaccess 182M 62M sleep 59 0 0:38:22 0.0% java/55
28319 root 9040K 7008K sleep 59 0 0:00:00 0.0% sshd/1
28161 oracle 4930M 4743M sleep 59 0 0:10:28 0.0% oracle/1
28159 oracle 4930M 4744M sleep 59 0 0:00:08 0.0% oracle/1
4534 noaccess 194M 105M sleep 59 0 0:11:55 0.0% java/55
NPROC USERNAME SWAP RSS MEMORY TIME CPU
*36 oracle 5074M 5134M 16% 1:34:28 6.3%*
66 root 146M 166M 0.5% 0:28:55 0.0%
2 noaccess 208M 258M 0.8% 0:50:17 0.0%
4 admin 4016K 12M 0.0% 0:00:00 0.0%
2 smmsp 2880K 9328K 0.0% 0:00:07 0.0%
12 daemon 15M 19M 0.1% 0:00:07 0.0%
Total: 122 processes, 581 lwps, load averages: 2.15, 2.12, 2.09
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