I have a web server that is behaving strangely lately. To keep things brief, look at the following:
[root@xxxxx test]# ls -lah
-bash: fork: Cannot allocate memory
[root@xxxxx test]# free -m
total used free shared buffers cached
Mem: 1285 899 386 0 0 0
-/+ buffers/cache: 899 386
Swap: 0 0 0
Now, why would this happen? Any other information I should provide to get help?