Swap memory: Difference between revisions
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== Enable hibernate == | |||
절전모드 활성화 하기 | |||
<pre> | |||
$ cd /var/lib/polkit-1/localauthority/50-local.d/ | |||
$ sudo vi com.ubuntu.enable-hibernate.pkla | |||
</pre> | |||
<pre> | |||
[Re-enable hibernate by default in upower] | |||
Identity=unix-user:* | |||
Action=org.freedesktop.upower.hibernate | |||
ResultActive=yes | |||
[Re-enable hibernate by default in logind] | |||
Identity=unix-user:* | |||
Action=org.freedesktop.login1.hibernate | |||
ResultActive=yes | |||
</pre> | |||
=== Change lid option === | |||
Hibernate your laptop when lid is closed | |||
<pre> | |||
$ sudo vi /etc/systemd/logind.conf | |||
</pre> | |||
And change the line | |||
<source lang=bash> | |||
#HandleLidSwitch=suspend | |||
HandleLidSwitch=hibernate | |||
</source> | |||
<pre> | |||
$ sudo restart systemd-logind | |||
</pre> | |||
== See also == | == See also == | ||
* http://www.linux.com/news/software/applications/8208-all-about-linux-swap-space - All about Linux swap space | * http://www.linux.com/news/software/applications/8208-all-about-linux-swap-space - All about Linux swap space | ||
* http://askubuntu.com/questions/94754/how-to-enable-hibernation - How to enable hibernation? | * http://askubuntu.com/questions/94754/how-to-enable-hibernation - How to enable hibernation? | ||
* http://ubuntuhandbook.org/index.php/2014/04/enable-hibernate-ubuntu-14-04 - How to Enable Hibernation in Ubuntu 14.04 | |||
== References == | == References == | ||
Revision as of 23:18, 7 September 2015
Overview
Swap 메모리 관련 내용 정리
Swap memory
Swap메모리는 주 메모리가 부족할 때 하드디스크와 같은 공간을 메모리로 사용하기 위한 가상 메모리이다.(윈도우에선 가상 메모리(페이징 메모리)라고 지칭함)
Check swap memory
free 명령어로 현재 설정되어 있는 swap 메모리 공간의 크기를 확인할 수 있다. <source lang=bash> pchero@earth:/etc$ free -m
total used free shared buffers cached
Mem: 1000 923 77 82 12 315 -/+ buffers/cache: 594 405 Swap: 1953 0 1952 </source>
Swap memory 늘리기
Swap 메모리 영역을 확보하기 위해서는 2가지 방법이 있다.
- Swap partition 구성하는 방법. - Swap file 생성 후, swap 영역으로 지정하는 방법.
Swap file
이미 파일 시스템을 구성한 이후라면, 스왑 파티션을 생성하는 것이 부담스러울 수 있다. 이런 경우, 간단하게 스왑 파일을 생성하여 스왑 영역으로 사용하면 된다.
<source lang=bash> pchero@earth:/home$ sudo dd if=/dev/zero of=/home/swapfile bs=1024 count=2000000 2000000+0 records in 2000000+0 records out 2048000000 bytes (2.0 GB) copied, 6.53252 s, 314 MB/s
pchero@earth:/home$ ls -sh total 2.0G 4.0K pchero 2.0G swapfile
pchero@earth:/home$ sudo mkswap /home/swapfile Setting up swapspace version 1, size = 1999996 KiB no label, UUID=7373fad5-bfca-4bb9-b8e7-2a92cf17fa7d
pchero@earth:/home$ sudo swapon /home/swapfile swapon: /home/swapfile: insecure permissions 0644, 0600 suggested.
pchero@earth:/home$ free -m
total used free shared buffers cached
Mem: 1000 935 64 82 6 338 -/+ buffers/cache: 590 409 Swap: 1953 0 1953 </source>
Enable hibernate
절전모드 활성화 하기
$ cd /var/lib/polkit-1/localauthority/50-local.d/ $ sudo vi com.ubuntu.enable-hibernate.pkla
[Re-enable hibernate by default in upower] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes [Re-enable hibernate by default in logind] Identity=unix-user:* Action=org.freedesktop.login1.hibernate ResultActive=yes
Change lid option
Hibernate your laptop when lid is closed
$ sudo vi /etc/systemd/logind.conf
And change the line <source lang=bash>
- HandleLidSwitch=suspend
HandleLidSwitch=hibernate </source>
$ sudo restart systemd-logind
See also
- http://www.linux.com/news/software/applications/8208-all-about-linux-swap-space - All about Linux swap space
- http://askubuntu.com/questions/94754/how-to-enable-hibernation - How to enable hibernation?
- http://ubuntuhandbook.org/index.php/2014/04/enable-hibernate-ubuntu-14-04 - How to Enable Hibernation in Ubuntu 14.04
References
<references />