เพิ่ม swap ง่ายนิดเดียว

ใครที่ติดตั้งลีนุกซ์ไปแล้ว แต่พาร์ติชัน swap ไว้น้อย อยากได้เพิ่มไม่ยากครับ

ผมขออนุญาต copy paste เอาไว้ในนี้เผื่อไว้ใช้นะครับ

Procedure to add a swap file

You need to use dd command to create swapfile. Next you need to use mkswap command to set up a Linux swap area on a device or in a file.

a) Login as the root user

b) Type following command to create 512MB swap file (1024 * 512MB = 524288 block size):

    HungryHacker@localhost:~$ dd if=/dev/zero of=/swapfile1 bs=1024 count=524288

c) Set up a Linux swap area:

    HungryHacker@localhost:~$ mkswap /swapfile1

d) Activate /swapfile1 swap space immediately:

    HungryHacker@localhost:~$ swapon /swapfile1

e) To activate /swapfile1 after Linux system reboot, add entry to /etc/fstab file. Open this file using text editor such as vi:

    HungryHacker@localhost:~$  vi /etc/fstab

Append following line to the above file:

    /swapfile1 swap swap defaults 0 0

So next time Linux comes up after reboot, it enables the new swap file for you automatically.

g) How do I verify swap is activated or not?

Simply use free command:

    HungryHacker@localhost:~$ free -mProcedure to add a swap file

You need to use dd command to create swapfile. Next you need to use mkswap command to set up a Linux swap area on a device or in a file.

a) Login as the root user

b) Type following command to create 512MB swap file (1024 * 512MB = 524288 block size):

    HungryHacker@localhost:~$ dd if=/dev/zero of=/swapfile1 bs=1024 count=524288

c) Set up a Linux swap area:

    HungryHacker@localhost:~$ mkswap /swapfile1

d) Activate /swapfile1 swap space immediately:

    HungryHacker@localhost:~$ swapon /swapfile1

e) To activate /swapfile1 after Linux system reboot, add entry to /etc/fstab file. Open this file using text editor such as vi:

    HungryHacker@localhost:~$  vi /etc/fstab

Append following line to the above file:

    /swapfile1 swap swap defaults 0 0

So next time Linux comes up after reboot, it enables the new swap file for you automatically.

g) How do I verify swap is activated or not?

Simply use free command:

    HungryHacker@localhost:~$ free -m

ที่มา : http://www.linuxadda.com/2009/04/increase-swap-memory-in-llinux.html