Initially, swap space is allocated as part of the Solaris installation process. If you use the installation program's automatic layout of disk slices and do not manually change the size of the swap slice, the Solaris installation program allocates default swap slices as shown in Table 30-1.
Table 30-1 Default Swap Space Allocations
If Your System Has n Mbytes of Physical Memory ... |
Then the Default Swap Space Allocated Is ... |
---|---|
16-64 |
32 Mbytes |
64-128 |
64 Mbytes |
128-512 |
128 Mbytes |
greater than 512 |
256 Mbytes |
After the system is installed, swap slices and files are listed in the /etc/vfstab file and are activated by the /sbin/swapadd script when the system is booted.
An entry for a swap device in the /etc/vfstab file contains:
The full path name of the swap slice or file
File system type of swap
Because the file system containing a swap file must be mounted before the swap file is activated, make sure that the entry that mounts the file system comes before the entry that activates the swap file in the /etc/vfstab file.