swift 13/12/17 09:10:19 Modified: hb-install-x86+amd64-disk.xml Log: Fix bug #445626 - Add info on swap space and possible sizing
Revision Changes Path 1.24 xml/htdocs/doc/en/handbook/hb-install-x86+amd64-disk.xml file : http://sources.gentoo.org/viewvc.cgi/gentoo/xml/htdocs/doc/en/handbook/hb-install-x86+amd64-disk.xml?rev=1.24&view=markup plain: http://sources.gentoo.org/viewvc.cgi/gentoo/xml/htdocs/doc/en/handbook/hb-install-x86+amd64-disk.xml?rev=1.24&content-type=text/plain diff : http://sources.gentoo.org/viewvc.cgi/gentoo/xml/htdocs/doc/en/handbook/hb-install-x86+amd64-disk.xml?r1=1.23&r2=1.24 Index: hb-install-x86+amd64-disk.xml =================================================================== RCS file: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-x86+amd64-disk.xml,v retrieving revision 1.23 retrieving revision 1.24 diff -u -r1.23 -r1.24 --- hb-install-x86+amd64-disk.xml 11 Apr 2013 18:25:12 -0000 1.23 +++ hb-install-x86+amd64-disk.xml 17 Dec 2013 09:10:19 -0000 1.24 @@ -4,7 +4,7 @@ <!-- The content of this document is licensed under the CC-BY-SA license --> <!-- See http://creativecommons.org/licenses/by-sa/2.5 --> -<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-x86+amd64-disk.xml,v 1.23 2013/04/11 18:25:12 swift Exp $ --> +<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-x86+amd64-disk.xml,v 1.24 2013/12/17 09:10:19 swift Exp $ --> <sections> @@ -13,8 +13,8 @@ This chapter describes how to partition a disk for future usage. </abstract> -<version>16</version> -<date>2013-04-11</date> +<version>17</version> +<date>2013-12-17</date> <section> <title>Introduction to Block Devices</title> @@ -103,7 +103,7 @@ <tr> <ti><path>/dev/sda2</path></ti> <ti>(swap)</ti> - <ti>512M</ti> + <ti>512M or higher</ti> <ti>Swap partition</ti> </tr> <tr> @@ -197,8 +197,8 @@ /dev/sda8 ext4 1011M 483M 477M 51% /opt /dev/sda9 ext4 2.0G 607M 1.3G 32% /var /dev/sda1 ext2 51M 17M 31M 36% /boot -/dev/sda6 swap 516M 12M 504M 2% <not mounted> -<comment>(Unpartitioned space for future usage: 2 GB)</comment> +/dev/sda6 swap 1516M 12M 1.4G 1% <not mounted> +<comment>(Unpartitioned space for future usage: 1 GB)</comment> </pre> <p> @@ -414,8 +414,29 @@ partition, then <c>p</c> to tell fdisk that you want a primary partition. Then type <c>2</c> to create the second primary partition, <path>/dev/sda2</path> in our case. When prompted for the first cylinder, hit enter. When prompted for -the last cylinder, type <c>+512M</c> to create a partition 512MB in size. After -you've done this, type <c>t</c> to set the partition type, <c>2</c> to select +the last cylinder, type <c>+512M</c> to create a partition 512MB in size. +</p> + +<p> +There is no perfect value for the swap partition. The purpose of swap space is +to provide disk storage to the kernel when internal memory (RAM) is under +pressure. A swap space allows for the kernel to move memory pages that are +not likely to be accessed soon to disk (swap or page-out), freeing memory. Of +course, if that memory is suddenly needed, these pages need to be put back in +memory (page-in) which will take a while (as disks are very slow compared to +internal memory). +</p> + +<p> +If you are not going to run memory intensive applications or you have lots of +memory available, then you probably do not need much swap space. However, swap +space is also used to store the entire memory in case of hibernation. If you +plan on using hibernation, you will need a bigger swap space, often at least +the amount of memory you have in your system. +</p> + +<p> +After you've done this, type <c>t</c> to set the partition type, <c>2</c> to select the partition you just created and then type in <c>82</c> to set the partition type to "Linux Swap". After completing these steps, typing <c>p</c> should display a partition table that looks similar to this:
