[PR #1489] feat: break out cache/buffers and ZFS ARC from used memory #24829

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GiteaMirror · 2026-06-20T14:36:01-05:00

GiteaMirror commented

2026-06-20 14:36:01 -05:00

📋 Pull Request Information

Original PR: https://github.com/moghtech/komodo/pull/1489
Author: @ChanningHe
Created: 6/20/2026
Status: 🔄 Open

Base: 2.3.0 ← Head: feat/memory-breakdown

📝 Commits (1)

6fabe42 feat: break out cache/buffers and ZFS ARC from used memory

📊 Changes

8 files changed (+406 additions, -19 deletions)

View changed files

📝 bin/core/src/monitor/record.rs (+4 -0)
➕ bin/periphery/src/stats/mem.rs (+149 -0)
📝 bin/periphery/src/stats/mod.rs (+10 -5)
📝 client/core/rs/src/entities/stats.rs (+34 -1)
📝 client/core/ts/src/types.ts (+44 -1)
📝 ui/public/client/types.d.ts (+44 -1)
📝 ui/src/resources/server/stats/current/ram.tsx (+19 -4)
📝 ui/src/resources/server/stats/historical.tsx (+102 -7)

📄 Description

On hosts with a big page cache or ZFS ARC, used memory looks almost full and the memory alerts keep firing, even though that memory is reclaimable. ZFS is the worst case since MemAvailable doesn't count the ARC. There are also a few open issues about this.

Periphery now reports memory broken out into used, cache/buffers, ZFS ARC and swap, and keeps reclaimable memory out of "used" so the alerts track real pressure.

Notes for review:

bin/periphery/src/stats.rs was moved to stats/mod.rs to make room for the new stats/mem.rs (the /proc parsing and calculation).
historical.tsx has the largest diff — the memory chart went from a single line to a stacked composition.

Screenshot:

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/moghtech/komodo/pull/1489 **Author:** [@ChanningHe](https://github.com/ChanningHe) **Created:** 6/20/2026 **Status:** 🔄 Open **Base:** `2.3.0` ← **Head:** `feat/memory-breakdown` --- ### 📝 Commits (1) - [`6fabe42`](https://github.com/moghtech/komodo/commit/6fabe421084f8bb18ea6067c6ca6b353f7577f19) feat: break out cache/buffers and ZFS ARC from used memory ### 📊 Changes **8 files changed** (+406 additions, -19 deletions) <details> <summary>View changed files</summary> 📝 `bin/core/src/monitor/record.rs` (+4 -0) ➕ `bin/periphery/src/stats/mem.rs` (+149 -0) 📝 `bin/periphery/src/stats/mod.rs` (+10 -5) 📝 `client/core/rs/src/entities/stats.rs` (+34 -1) 📝 `client/core/ts/src/types.ts` (+44 -1) 📝 `ui/public/client/types.d.ts` (+44 -1) 📝 `ui/src/resources/server/stats/current/ram.tsx` (+19 -4) 📝 `ui/src/resources/server/stats/historical.tsx` (+102 -7) </details> ### 📄 Description On hosts with a big page cache or ZFS ARC, used memory looks almost full and the memory alerts keep firing, even though that memory is reclaimable. ZFS is the worst case since `MemAvailable` doesn't count the ARC. There are also a few open issues about this. Periphery now reports memory broken out into used, cache/buffers, ZFS ARC and swap, and keeps reclaimable memory out of "used" so the alerts track real pressure. Notes for review: - `bin/periphery/src/stats.rs` was moved to `stats/mod.rs` to make room for the new `stats/mem.rs` (the /proc parsing and calculation). - `historical.tsx` has the largest diff — the memory chart went from a single line to a stacked composition. Screenshot: <img width="1960" height="274" alt="RAM Usage" src="https://github.com/user-attachments/assets/f81d6691-9661-4db3-b755-637f0ee3dcfa" /> <img width="1898" height="584" alt="Memory" src="https://github.com/user-attachments/assets/b5c5a2ab-0d23-4cd0-8744-e22b8fa33a03" /> --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

GiteaMirror added the pull-request label 2026-06-20 14:36:01 -05:00

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Reference: github-starred/komodo#24829