有时我遇到了一个错误 -bash: fork: Cannot allocate memory，但是当我运行 free -m时，它表明我确实有足够的内存：
total used free shared buffers cached
Mem: 128942 107886 21055 0 1037 17665
-/+ buffers/cache: 89183 39758
Swap: 0 0 0
也许它有STH。要使用ulimit，我会运行ulimit -a'结果：
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 1031505
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 99999
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 1031505
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
另外， lsof |wc -l'结果如下：
14100
我似乎一切都还好，但是有时我在CONMOND运行时得到了-bash: fork: Cannot allocate memory，例如top ls du...
看起来您的系统在交换空间上很低。https://unix.stackexchange.com/questions/41547/linux-running-slow-with-0-swap-left如果有帮助，请单击大拇指。