Pagesize
From pressy's brainbackup
Solaris provides different memory page sizes, on SPARC up to 2gb. It does not always make sense to use 2gb also known as huge page sizes. The Oracle database chooses the size depending on their needs:
root@server:/# pagesize -a
8192
65536
4194304
268435456
2147483648
root@server:/# ps -ef | grep smon | wc -l
25
root@server:/# prctl -n zone.max-shm-memory -i zone global
zone: 0: global
NAME PRIVILEGE VALUE FLAG ACTION RECIPIENT
zone.max-shm-memory
usage 47.5GB
system 16.0EB max deny -
root@server:/#
root@server:/# mdb -k
Loading modules: [ unix genunix specfs dtrace zfs scsi_vhci ldc mac ip hook neti ds arp kssl sockfs ipc random idm mdesc cpc crypto fcip fctl fcp ufs logindmux ptm sppp nsmb nfs ]
> ::memstat
Page Summary Pages Bytes %Tot
----------------- ---------------- ---------------- ----
Kernel 1531886 11.6G 9%
Guest 0 0 0%
ZFS Metadata 357116 2.7G 2%
ZFS File Data 229109 1.7G 1%
Anon 9240216 70.4G 55%
Exec and libs 125346 979.2M 1%
Page cache 61769 482.5M 0%
In temporary use 512 4M 0%
Free (cachelist) 4395237 33.5G 26%
Free (freelist) 836025 6.3G 5%
Total 16777216 128G
> ::tile -s
TILE MN SZC TOTAL PCT USER PCT KCAGE PCT
8k 52.4g 40.9% 43.1g 33.7% 9.2g 7.22%
64k 19.0g 14.9% 19.0g 14.9% - -
4m 18.2g 14.2% 18.2g 14.2% - -
256m 30.2g 23.6% 24.7g 19.3% 5.5g 4.29%
2g 8g 6.25% 8g 6.25% - -
total 128g 100% 113.2g 88.4% 14.7g 11.5%
> ::quit