日落3h ago
預設把 zswap 打開 – Gea-Suan Lin's BLOG
https://blog.gslin.org/archives/2026/03/27/12957/%e9%a0%90%e8%a8%ad%e6%8a%8a-zswap-%e6%89%93%e9%96%8b/
#linux #swap #zswap
預設把 zswap 打開

前幾天 Lobsters 上看到「Debunking zswap and zram myths」這篇，想到預設其實可以開 zswap。 用 GRUB 的話可以這樣開： echo 'GRUB_CMDLINE_LINUX_DEFAULT=$GRUB_CMDLINE_LINUX_DEFAULT zswap.enabled=1' | sudo tee /etc/default/grub.d/99-zswap.

Gea-Suan Lin's BLOG
Gea-Suan Lin3h ago

https://blog.gslin.org/archives/2026/03/27/12957/%e9%a0%90%e8%a8%ad%e6%8a%8a-zswap-%e6%89%93%e9%96%8b/

預設把 zswap 打開

#compression #linux #performance #swap #zswap

預設把 zswap 打開

前幾天 Lobsters 上看到「Debunking zswap and zram myths」這篇，想到預設其實可以開 zswap。 用 GRUB 的話可以這樣開： echo 'GRUB_CMDLINE_LINUX_DEFAULT=$GRUB_CMDLINE_LINUX_DEFAULT zswap.enabled=1' | sudo tee /etc/default/grub.d/99-zswap.

Gea-Suan Lin's BLOG
starkzarn 1d ago

RE: https://fedi.lwn.net/@lwn/116284411154075596

tl;dr - (almost) always use zswap

#zswap #zram #linux

Guiguid2d ago
Years living in error about using #zram on all my #linux machines, but now the best explanation that I've never read on RAM usage by Chris Down in https://chrisdown.name/2018/01/02/in-defence-of-swap.html makes me migrate all my host to native kernel #zswap and file swap.
#CachyOS, #Nixos and others: upgrade your mind !
In defence of swap: common misconceptions

tl;dr: Having swap is a reasonably important part of a well functioning system. Without it, sane memory management becomes harder to achieve.

Sakarepmu Weh2d ago

RE: https://c.im/@lwnbot/116284493258223180

Nice reading although I still use zram for most.

#linux #zram #zswap

N-gated Hacker News3d ago
Ah, the classic "Let me explain why you're wrong about #zswap and zram" rant, complete with obligatory self-promotion links. 🙄 Who knew compressing RAM could be so controversial? But hey, if you need more jargon in your life, this blog's got you covered. 💻🎉
https://chrisdown.name/2026/03/24/zswap-vs-zram-when-to-use-what.html #zram #RAMcompression #techrants #selfpromotion #HackerNews #ngated
Debunking zswap and zram myths

zswap and zram are fundamentally different approaches with different philosophies. If in doubt, use zswap.

Hacker News3d ago

Debunking Zswap and Zram Myths

https://chrisdown.name/2026/03/24/zswap-vs-zram-when-to-use-what.html

#HackerNews #Debunking #Zswap #and #Zram #Myths #Zswap #Zram #Myths #Linux #Performance #Optimization

Debunking zswap and zram myths

zswap and zram are fundamentally different approaches with different philosophies. If in doubt, use zswap.

Show threadBenedikt WiMar 6
@geheimorga gibt #zram und #zswap https://wiki.archlinux.org/title/Zswap für moderne Systeme 😉
zswap - ArchWiki

Philipp KrennDec 15
TIL about #zswap "a compressed write-back cache for swapped pages, as a form of virtual memory compression". this will hopefully came in handy soon for performance :)
also there are zram and zcache (https://askubuntu.com/a/472227 has a comparison)
zram vs zswap vs zcache Ultimate guide: when to use which one

What the hell are they? How are they different (I've written my understanding in an answer below) In the Zswap system, when a page is evicted from the zswap to the actual swap is it stored in a

Ask Ubuntu
sjDec 15

According to LWN kernel source DB, the number of my Linux mainline commits exceeded 1,000 with 6.19-rc1. It feels like a moment to me.

Most commits were made for DAMON, but the 1,000-th commit was for zswap ;)

$ git log --oneline --author "SeongJae" | grep damon | wc -l 872 $ nr=0; for c in $(git log --pretty=%h --reverse --author "SeongJae"); do nr=$((│[43] [PATCH v3] mm/damon/sysfs-schemes: Remove outdated TODO in target_nid_store() (Swaraj nr + 1)); if [ "$nr" -eq 1000 ]; then git log "$c" -1 --pretty="%h %s"; fi; done 0fdaa13ee93a Docs/admin-guide/mm/zswap: s/red-black tree/xarray/

#linux #kernel #damon #zswap