Compile time: Virtual memory Exhausted:cannot Allocate memory

First, the question

When the virtual machine is installed when the system does not set the swap size or set the memory is too small, the compiler will appear the virtual memory Exhausted:cannot allocate memory problem, you can use swap to expand the Ram method.

Second, the solution

In the execution of Free-m is the time to prompt cannot allocate memory:

(Swap files can be placed in their preferred location such as/var/swap)

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2. [Email protected] byrd]# free-m
4. Total used free shared buffers Cached
6. MEM:512 108 403 0 0 28
8. -/+ buffers/cache:79 432
10. swap:0 0 0
12. [Email protected] ~]# mkdir/opt/images/
14. [Email protected] ~]# Rm-rf/opt/images/swap
16. [email protected] ~]# dd if=/dev/zero of=/opt/images/swap bs=1024x768 count=2048000
18. 2048000+0 Records in
20. 2048000+0 Records out
22. 2097152000 bytes (2.1 GB) copied, 82.7509 s, 25.3 MB/s
24. [Email protected] ~]# Mkswap/opt/images/swap
26. Mkswap:/opt/images/swap:warning:don ' t erase bootbits sectors
28. On whole disk. Use-f to force.
30. Setting up Swapspace version 1, size = 2047996 KiB
32. No label, uuid=59daeabb-d0c5-46b6-bf52-465e6b05eb0b
34. [Email protected] mnt]# Swapon/opt/images/swap
36. [Email protected] mnt]# free-m
38. Total used free shared buffers Cached
40. mem:488 481 7 0 6 417
42. -/+ buffers/cache:57 431
44. swap:999 0 999

Memory is too small to add memory to resolve.

After use, you can turn off swap:

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1. [[email protected] mnt]# Swapoff swap
2. [Email protected] mnt]# rm-f/opt/images/swap

Swap files can also not be deleted, reserved for later use, the key is that your virtual machine hard disk enough.

Compile time: Virtual memory Exhausted:cannot Allocate memory