ArcBox

Notes from the runtime.

Engineering deep dives, product releases, and security research from the team building ArcBox.

The Balloon Is a Placebo: No Container Runtime Can Give Your Mac's RAM Back
VirtualizationLatest

The Balloon Is a Placebo: No Container Runtime Can Give Your Mac's RAM Back

We measured what actually happens when a Linux VM on macOS frees memory: nothing. Apple's balloon device doesn't release pages host-side, Apple's own container tool tells you to restart containers instead, and every serious runtime — Docker, Podman, OrbStack — is quietly engineering its way off Virtualization.framework because of it.

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AprilNEA

13 min read

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We Fixed UniFi's Slow PPPoE Performance by Offloading PPPoE to a Separate Device with Half-Bridge
Networking
6 min read

We Fixed UniFi's Slow PPPoE Performance by Offloading PPPoE to a Separate Device with Half-Bridge

UniFi gateways (UDM Pro/SE/Pro Max/Beast/EFG) ship with notoriously underpowered CPUs and has no hardware acceleration for PPPoE. Paired with a PPPoE-based ISP connection, the performance is dismal. So why not hand the PPPoE dialing off to a dedicated device and let the UniFi gateway focus on routing, IDS/IPS, and NAT while breaking past 5500 Mbps of throughput?

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Sukka
ArcBox Desktop public beta: the open-source alternative to OrbStack and Docker Desktop
Releases
3 min read

ArcBox Desktop public beta: the open-source alternative to OrbStack and Docker Desktop

ArcBox Desktop is an open-source Docker Desktop alternative for macOS, built with a Rust runtime and native SwiftUI.

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AprilNEA and Peron

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