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diff --git a/system/swapinzram/README b/system/swapinzram/README new file mode 100644 index 0000000000000..99a48effc0eb6 --- /dev/null +++ b/system/swapinzram/README @@ -0,0 +1,30 @@ +# swapinzram for Slackware +Modified swapinzram script by Didier Spaier +http://slackware.uk/slint/x86_64/slint-15.0/source/swapinzram/ + + +The package swapinzram is intended to extend the swap spaces available +beyond swap partitions and swap files, providing swap space in the form +of a block device in compressed RAM, using the zram kernel module. +As the files in it are compressed this results in an increase of the +RAM size usable by the system at the cost of a small overhead to +compress and decompress the files. + +This can be useful to: +1. Avoid or at least delay swapping on a mass storage device when +available space in RAM decreases. This results in a performance gain +because writing in RAM is way faster that on a hard disk or even an SSD +2. Less writing on a storage devices like flash drives, eMMC, USB flash +drives or SD card, if the swap partition or file is installed on such +devices. +Beyond the performance gain this also minimizes wearing of the device. + +zram can also be used to create block devices in RAM for other usages, +like to store the files in /tmp or the kernel log, but this is not in +the scope of this package. However as we pick an available zram device +id there should be no conflict when adding these features. + +Also in the TODO list, allow to write idle/incompressible pages to a +backing storage rather than keeping them in memory. The documentation +states that the backing storage should be a swap partition, not a swap +file, but I will check if it's still true. |