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0 pointselectroly3y ago0 comments

All major OSes have had transparent memory compression for years now.

0 comments

ribasushi3y ago

I can't find anything regarding Linux. Could you share the name of the project/daemon?

electrolyOP3y ago

I believe "zswap" is the main kernel feature supporting memory compression.

https://lwn.net/Articles/545244/ -- I believe this article was written a bit before zswap was merged into the kernel.

ribasushi3y ago

zswap is not transparent memory compression: it specifically focus on compressed paged-out faults.

I am not aware of anything that goes the MacOS way: actual compressed ram, with fast in-cpu-cache decompression of the compressed payload carried over the dram bus.

This seems to be the current state of the world: https://unix.stackexchange.com/a/374579

j / k navigate · click thread line to collapse

0 comments

ribasushi3y ago

I can't find anything regarding Linux. Could you share the name of the project/daemon?

electrolyOP3y ago

I believe "zswap" is the main kernel feature supporting memory compression.

https://lwn.net/Articles/545244/ -- I believe this article was written a bit before zswap was merged into the kernel.

ribasushi3y ago

zswap is not transparent memory compression: it specifically focus on compressed paged-out faults.

I am not aware of anything that goes the MacOS way: actual compressed ram, with fast in-cpu-cache decompression of the compressed payload carried over the dram bus.

This seems to be the current state of the world: https://unix.stackexchange.com/a/374579

j / k navigate · click thread line to collapse