If you see this message displayed on the console:
Fork failed: Command[scoterm]System Error was: Resource temporarily unavailableThis message is usually caused by running out of virtual memory and can be easily remedied by adding more swap space. This must be done while in multiuser mode. When executed as root, these commands add approximately 30MB of virtual memory:
The /swap file will only grow according to the actual swap requirements and may not actually consume 30MB of disk space. To avoid reissuing this command every time the system is rebooted, simply add the above commands to the /etc/rc.d/8/userdef file.
Virtual memory is tracked via the kernel variable availsmem, which tracks the available virtual memory in 4K pages. This variable is handled conservatively, and normally reserves more swap space than will actually be needed. Programs that use shared libraries will decrement availsmem. Programs that use the mmap(S) facility and map privately also require a large reserve of virtual memory.
To monitor availsmem, use the crash(ADM) utility:
# crash dumpfile = /dev/mem, namelist = /unix, outfile = stdout > od -d availsmem f0175120: 0000011682 > qIn this example, the value ``0000011682'' translates to 11,682 4K pages, or approximately 45.63 MB.