Solaris 10 SWAP limit?

Question

SCENARIO:
installed solaris 10 on a IA32 system (pls see below for my computer specs), and during installation, i allocated 10GB for the swap slice.
PROBLEM:
when i do df -k and swap -s, these are the output (please see the swap part):
df -k:
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c0d1s0 20172289 3434840 16535727 18% /
/devices 0 0 0 0% /devices
ctfs 0 0 0 0% /system/contract
proc 0 0 0 0% /proc
mnttab 0 0 0 0% /etc/mnttab
swap 2834060 624 2833436 1% /etc/svc/volatile
objfs 0 0 0 0% /system/object
/dev/dsk/c0d1s6 15129027 2493637 12484100 17% /usr
/usr/lib/libc/libc_hwcap1.so.1
15129027 2493637 12484100 17% /lib/libc.so.1
fd 0 0 0 0% /dev/fd
/dev/dsk/c0d1s3 4300422 122107 4135311 3% /var
swap 2833756 320 2833436 1% /tmp
swap 2833460 24 2833436 1% /var/run
/dev/dsk/c0d1s5 15129027 1423350 13554387 10% /opt
/dev/dsk/c0d1s1 1986415 203200 1723623 11% /usr/openwin
/dev/dsk/c0d1s7 10085764 293799 9691108 3% /export/home
/export/home/gpwa/pwa
10085764 293799 9691108 3% /home/pwa
swap -s:
total: 93376k bytes allocated + 13132k reserved = 106508k used, 2835464k available
QUESTION:
how come the swap allocated space is only approx 2.8GB ??? and not 10GB???
is it because i am on a 32bit system? so there's a limit? but shouldn't the limit be around 4GB? and not just 2.8GB?
if there's a limit, can i do something to exceed the limit? i mean, what happened to the remaining approx 7.2GB??
pls enlighten me! thank you!!!
COMPUTER SPECS:
Pentium 4 - 1.4 GHz
1GB RDRAM
32 BIT system

Answer 1

From "man swap"':
USAGE:
On the 32-bit operating system, only the first 2 Gbytes -1
are used for swap devices greater than or equal to 2 Gbytes
in size. On the 64-bit operating system, a block device
larger than 2 Gbytes can be fully utilized for swap up to
2**63 -1 bytes.
Hence, a swap object might be larger than it appears..
Btw, the reason to why your swap appears to be 2.8 GB is in size, is that in Solaris the available swap is calculated from the free swap + free memory, so in your case you have 2 Gb of swap and 0.8 Gb of free memory..
7/M.