Hacker ApprovedDepartments

MGLRU

Ranked 3 of 3 kernel features by recommenders

Linux kernel memory management that keeps swap and low-memory systems responsive, especially on older PCs with little RAM or slow disks. One critic reported problems after it arrived in 6.1.

Linux kernel memory management that keeps swap and low-memory systems responsive, especially on older PCs with little RAM or slow disks. One critic reported problems after it arrived in 6.1.

8 people gave an opinion

recommend it
7
criticize it
1
approval share
88%
Each figure is one person. RecommendsCriticizes

Recommended in 6 of 13 months

  1. November 2025: not recommended
  2. December 2025: recommended
  3. January 2026: not recommended
  4. February 2026: recommended
  5. March 2026: recommended
  6. April 2026: not recommended
  7. May 2026: not recommended
  8. June 2026: recommended
  9. July 2026: recommended
  10. August 2026: recommended
  11. September 2026: not recommended
  12. October 2026: not recommended
  13. November 2026: not recommended (month in progress)

Why it doesn’t carry the badge

  • 7 people recommend itNeeds 10 or more, not met.
  • 7 recommenders for every criticNeeds 2 to 1 or better, met.
  • Recommended in 6 of 13 monthsNeeds 4 or more, met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

What people say about it

The reasons people give, with the number of comments that give each one. Open a reason to read what they said.

Why people recommend it

Each mark is one comment

  • Fixes swap and memory issues

    “Linux swap has been fixed on Chromebooks for years thanks to MGLRU.”

    Comment from 5 Feb 2026 in “Modernizing Linux swapping: introducing the swap table”

    “has entirely resolved the issue for me”

    Comment from 18 Aug 2026 in “Linux 7.3 improves performance when running out of vRAM”

    “I thought that was fixed after MGLRU.”

    Comment from 24 Dec 2025 in “Meta is using the Linux scheduler designed for Valve's Steam Deck on its servers”
  • Helps low-RAM PCs with HDDs

    “For HDD, it also needs to be tuned. In its default configuration, MGLRU 'just' manages multiple generations of working sets”

    Comment from 27 Jun 2026 in “Linux on Older Hardware: The Complete Revival Guide”

    “It has the biggest impact on performance on lower-end PCs, especially with low amount of RAM and slow HDD.”

    Comment from 27 Jun 2026 in “Linux on Older Hardware: The Complete Revival Guide”

Other kernel features people recommend

The two most recommended other kernel features, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.

MGLRU compared with 2 alternatives
ProductRecommendCriticizeApprovalMonthsOwnedBadge
zswap31294%11—Approved
zram311469%11—Approved
MGLRUThis page7188%6——
See all 3 kernel features, ranked

What people said

All 9 comments that mention it, newest first. Each links to the original comment.

“has entirely resolved the issue for me”

RecommendsComment from 18 Aug 2026 in “Linux 7.3 improves performance when running out of vRAM”

“We have MGLRU now for example.”

RecommendsComment from 3 Jul 2026 in “Lightning Memory-Mapped Database Manager (LMDB) 1.0”

“For HDD, it also needs to be tuned. In its default configuration, MGLRU 'just' manages multiple generations of working sets”

RecommendsComment from 27 Jun 2026 in “Linux on Older Hardware: The Complete Revival Guide”

“It has the biggest impact on performance on lower-end PCs, especially with low amount of RAM and slow HDD.”

RecommendsComment from 27 Jun 2026 in “Linux on Older Hardware: The Complete Revival Guide”

“A simpler alternative to OOM daemons could be enabling MGLRU's thrashing prevention”

RecommendsComment from 24 Mar 2026 in “Debunking Zswap and Zram Myths”

“I had nothing but problems since that was introduced in 6.1”

CriticizesComment from 5 Feb 2026 in “Modernizing Linux swapping: introducing the swap table”

“Linux swap has been fixed on Chromebooks for years thanks to MGLRU.”

RecommendsComment from 5 Feb 2026 in “Modernizing Linux swapping: introducing the swap table”

“I thought that was fixed after MGLRU.”

RecommendsComment from 24 Dec 2025 in “Meta is using the Linux scheduler designed for Valve's Steam Deck on its servers”

“I am very happy with MGLRU”

RecommendsComment from 15 Dec 2025 in “Interview with Kent Overstreet (Bcachefs) [audio]”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.