How Do I Know If I Need More Swap Space?
Use the swap -l command to determine if your system needs more swap
For example, the following swap -l output shows that this system's swap space
is almost entirely consumed or at 100% allocation.
% swap -l
swapfile dev swaplo blocks free
/dev/dsk/c0t0d0s1 136,1 16 1638608 88
When a system's swap space is at 100% allocation, an application's memory pages
become temporarily locked. Application errors might not occur, but system performance will likely
For information on adding more swap space to your system, see How to Create a Swap File and Make It Available.
Swap-Related Error Messages
These messages indicate that an application was trying to get more anonymous memory.
However, no swap space was left to back it.
application is out of memory
malloc error O
messages.1:Sep 21 20:52:11 mars genunix: [ID 470503 kern.warning]
WARNING: Sorry, no swap space to grow stack for pid 100295 (myprog)
TMPFS-Related Error Messages
The following message is displayed if a page could not be allocated when
a file was being written. This problem can occur when TMPFS tries
to write more than it is allowed or if currently executed programs are
using a lot of memory.
directory: File system full, swap space limit exceeded
The following message means that TMPFS ran out of physical memory while attempting
to create a new file or directory:
directory: File system full, memory allocation failed
For information on recovering from the TMPFS-related error messages, see tmpfs(7FS).