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https://www.kernel.org/doc/html/latest/admin-guide/blockdev/ramdisk.html
4) An Example of Creating a Compressed RAM Disk¶ To create a RAM disk image, you will need a spare block device to construct it on. This can be the RAM disk device itself, or an unused disk partition (such as an unmounted swap partition). For this example, we will use the RAM disk device, “/dev/ram0”.
https://www.kernel.org/doc/html/latest/admin-guide/blockdev/zram.html
The zram module creates RAM based block devices named /dev/zram<id> (<id> = 0, 1, …). Pages written to these disks are compressed and stored in memory itself. These disks allow very fast I/O and compression provides good amounts of memory savings.
https://www.funtoo.org/Zram
Compressed RAM based block devices. The zram module creates RAM based block devices named /dev/zram<id> (<id> = 0, 1, ...). Pages written to these disks are compressed and stored in memory itself. These disks allow very fast I/O and compression provides good amounts of memory savings.
http://lkml.iu.edu/hypermail/linux/kernel/0903.2/00713.html
Creates RAM based block device (ramzswap0) which can be used as swap device. Pages swapped to this are compressed and stored in memory itself. The module is called compcache.ko.
https://en.wikipedia.org/wiki/Zram
zram, formerly called compcache, is a Linux kernel module for creating a compressed block device in RAM, i.e. a RAM disk, but with on-the-fly "disk" compression.The block device created with zram can then be used for swap or as general-purpose RAM disk. The two most common uses for zram are for the storage of temporary files (/tmp) and as a swap "disk".License: GNU General Public License
https://unix.stackexchange.com/questions/157041/how-linux-kernel-3-x-manage-ramdisk-as-block-device
I need a block device in RAM. I built a 3.x kernel and added the RAM block device driver. ... How Linux kernel 3.x manage ramdisk as block device? Ask Question Asked 5 years, 2 months ago. Active 5 years, ... 'ramdisk support' or however you want to call it and …
http://lkml.iu.edu/hypermail/linux/kernel/0903.3/03286.html
Creates RAM based block device (ramzswap0) which can be used as swap device. Pages swapped to this are compressed and stored in memory itself. The module is called ramzswap.ko.
http://www.linux-magazine.com/content/download/62515/485188/version/1/file/032-036_cloop.pdf+
Cloop: A Compressed Loopback Block Device One block device included in any Linux kernel is loop, which maps a plain file to a block device node in /dev/loop [number] . The loop-attached file can then be mounted like an ordinary hard The cloop module lets you manage compression at the block device level.
https://events.static.linuxfound.org/sites/events/files/lcjpcojp13_klee.pdf
is a compressed read-only file system, zlib, xz and lzo compression is supported zram Increase performance by avoiding paging on disk and instead use a compressed block device in RAM, lzo is used for compression There will be more...
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