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Full Discussion: swap partition?
Operating Systems Linux swap partition? Post 50394 by TioTony on Friday 23rd of April 2004 01:09:40 AM
Old 04-23-2004
I believe linux will use some space in / for swap if you delete the swap partition but I haven't tried it. Basically swap can be thought of as extra RAM, but on disk. Lets say you have 1 GB of RAM but you are running a database that needs 2 GB of RAM. You can use 1 GB of actual RAM and 1 GB of SWAP. Without going into to much of a discussion on swap space, typically you want to avoid using your swap space because it is a huge performance degradation to your system. Think of how fast RAM is compared to disk. If you are basically using a disk in place of RAM your system is going to run much slower.

When you use swap, the memory chunks (called pages) that are not in use are written to disk. When the application needs them again they are read from disk back to RAM and other pages are written to the disk if more RAM space is needed.

I hope that makes sense.
 

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LEARN ABOUT OPENSOLARIS

addpart

ADDPART(8)                                                     System Administration                                                    ADDPART(8)

NAME

       addpart - tell the kernel about the existence of a partition

SYNOPSIS

       addpart device partition start length

DESCRIPTION

       addpart  tells the Linux kernel about the existence of the specified partition.  The command is a simple wrapper around the "add partition"
       ioctl.

       This command doesn't manipulate partitions on a block device.

PARAMETERS

       device The disk device.

       partition
              The partition number.

       start  The beginning of the partition (in 512-byte sectors).

       length The length of the partition (in 512-byte sectors).

SEE ALSO

       delpart(8), fdisk(8), parted(8), partprobe(8), partx(8)

AVAILABILITY

       The addpart command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.

util-linux                                                         January 2015                                                         ADDPART(8)
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