編譯時:virtual memory exhausted: Cannot allocate memory,exhaustedallocate
編譯時:virtual memory exhausted: Cannot allocate memory,exhaustedallocate
一、問題
當安裝虛擬機時系統時沒有設置swap大小或設置內存太小,編譯程序會出現virtual memory exhausted: Cannot allocate memory的問題,可以用swap擴展內存的方法。
二、解決方法
在執行free -m的是時候提示Cannot allocate memory:
(swap文件可以放在自己喜歡的位置如/var/swap)
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- [root@Byrd byrd]# free -m
- total used free shared buffers cached
- Mem: 512 108 403 0 0 28
- -/+ buffers/cache: 79 432
- Swap: 0 0 0
- [root@Byrd ~]# mkdir /opt/images/
- [root@Byrd ~]# rm -rf /opt/images/swap
- [root@Byrd ~]# dd if=/dev/zero of=/opt/images/swap bs=1024 count=2048000
- 2048000+0 records in
- 2048000+0 records out
- 2097152000 bytes (2.1 GB) copied, 82.7509 s, 25.3 MB/s
- [root@Byrd ~]# mkswap /opt/images/swap
- mkswap: /opt/images/swap: warning: don't erase bootbits sectors
- on whole disk. Use -f to force.
- Setting up swapspace version 1, size = 2047996 KiB
- no label, UUID=59daeabb-d0c5-46b6-bf52-465e6b05eb0b
- [root@hz mnt]# swapon /opt/images/swap
- [root@hz mnt]# free -m
- total used free shared buffers cached
- Mem: 488 481 7 0 6 417
- -/+ buffers/cache: 57 431
- Swap: 999 0 999
內存太小,增加內存可以解決。
使用完畢後可以關掉swap:
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- [root@hz mnt]# swapoff swap
- [root@hz mnt]# rm -f /opt/images/swap
swap文件也可以不刪除,留著以後使用,關鍵是你的虛擬機硬盤夠用。
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