Pagesize
From pressy's brainbackup
Solaris provides different memory page sizes, on SPARC up to 16gb. It does not always make sense to use 16gb 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
Usage Type/Subtype Pages Bytes %Tot %Tot/%Subt
---------------------------- ---------------- -------- ----- -----------
Kernel 10657519 81.3g 6.7%
Regular Kernel 8204461 62.5g 5.1%/76.9%
Defdump prealloc 2453058 18.7g 1.5%/23.0%
ZFS 1986282 15.1g 1.2%
User/Anon 142318553 1.0t 89.5%
Regular User/Anon 23403481 178.5g 14.7%/16.4%
OSM 118915072 907.2g 74.7%/83.5%
Exec and libs 416779 3.1g 0.2%
Page Cache 199137 1.5g 0.1%
Free (cachelist) 46094 360.1m 0.0%
Free 3365972 25.6g 2.1%
Total 158990336 1.1t 100%
>
> ::tile -s
TILE MN SZC TOTAL PCT USER PCT KCAGE PCT
8k 86.6g 7.14% 39.9g 3.29% 46.6g 3.84%
64k 70.5g 5.81% 70.5g 5.81% 2.1m 0.00%
4m 109.8g 9.05% 99.2g 8.18% 10.5g 0.87%
256m 134g 11.0% 89g 7.33% 45g 3.70%
2g 140g 11.5% 140g 11.5% - -
16g 672g 55.3% 672g 55.3% - -
total 1.1t 100% 1.0t 91.5% 102.2g 8.42%
>
> ::tile -l
TILE MN T TOTAL NOSZC 8k 64k 4m 256m 2g 16g BUSY
0 0 + 251 14 24 10 47 147 9 - -
1 0 + 256 133 1 25 58 39 - - -
2 0 u 256 195 1 11 30 19 - - -
3 0 u 256 128 - 25 20 19 - 64 -
4 0 u 256 66 - 17 17 28 - 128 -
5 0 u 256 66 - 13 12 37 - 128 -
6 0 u 256 193 - 12 23 28 - - -
7 0 u 127 5 - 16 17 33 56 - -
8 1 u 251 184 - 6 11 2 48 - -
9 1 u 256 128 - 10 52 2 64 - -
a 1 u 256 129 - 18 38 7 - 64 -
b 1 u 256 130 1 10 53 38 24 - -
c 1 + 256 128 - 12 46 6 - 64 -
d 1 u 256 129 - 11 45 7 - 64 -
e 1 + 256 131 2 13 42 4 - 64 -
f 1 + 127 6 21 3 12 85 - - -
10 2 u 251 130 - - 1 - 56 64 -
11 2 + 256 128 - - 60 12 56 - -
12 2 + 256 65 2 - 30 23 72 64 -
13 2 + 256 44 20 1 25 78 24 64 -
14 2 k 5 - 3 - - 2 - - -
total + 4852 2132 75 213 639 616 409 768 -
> ::tile -v
TILE M ID MG MN PRI K T TOTAL FREE OOB CACHED BORROW
20600000000 0 0 0 - g + 62.7g 4.1g 3.2g 12.5m -
u 13.7g 1.4g 1.3g 12.5m -
k 49g 2.6g 1.8g - -
20600008040 1 0 0 - g + 64g 2.9g 2.4g 11.7m 1.5m
u 61.2g 2.2g 1.9g 11.7m -
k 2.7g 765.1m 548.7m - 1.5m
20600010080 2 0 0 - g u 64g 889.3m 889.3m 11.6m -
206000180c0 3 0 0 - g u 64g 522.7m 522.7m 13.6m -
20600020100 4 0 0 - g u 64g 56k 56k 680k -
20600028140 5 0 0 - g u 64g - - 32k -
20600030180 6 0 0 - g u 64g 537.2m 537.2m 22.0m -
206000381c0 7 0 0 - g u 31.7g 163.0m 159.2m 12.2m -
20600040200 8 1 1 - g u 62.7g 744k 744k 360k -
20600048240 9 1 1 - g u 64g 828.2m 828.2m 8.4m -
20600050280 a 1 1 - g u 64g 749.5m 749.5m 15.4m -
206000582c0 b 1 1 - g u 64g 1.1g 897.6m 22.2m -
20600060300 c 1 1 - g + 64g 1.0g 1.0g 32.4m -
u 63g 1.0g 1.0g 32.4m -
k 1g 52m - - -
20600068340 d 1 1 - g u 64g 987.1m 987.1m 15.5m -
20600070380 e 1 1 - g + 64g 830.3m 566.3m 26.2m -
u 62g 570.3m 566.3m 26.2m -
k 2g 260.0m - - -
206000783c0 f 1 1 - g + 31.7g 3.6g 1.1g 480k -
u 3g 88k 88k 480k -
k 28.7g 3.6g 1.1g - -
20600080400 10 2 2 - g u 62.7g 16k 16k 128k -
20600088440 11 2 2 - g + 64g 728.2m 392.2m 1.2m 48.1m
u 62.5g 604.1m 392.1m 1.2m -
k 1.5g 124.0m 64k - 48.1m
20600090480 12 2 2 - g + 64g 187.8m 183.8m 512k -
u 63g 135.8m 131.8m 512k -
k 1g 52m 52m - -
206000984c0 13 2 2 - g + 64g 6.4g 3.3g 744k -
u 49g 116.9m 112.9m 744k -
k 15g 6.3g 3.2g - -
206000a0500 14 2 2 - g k 1.2g - - - -
total + 1.1t 25.7g 17.7g 208.4m 49.6m
u 1.0t 11.8g 10.9g 208.4m -
k 102.2g 13.9g 6.8g - 49.6m
>