Observed arrival · 2026-10-03
Rewind VM: rewind a failing Linux run
A Linux debugging tool that lets you scrub through a command’s execution, inspect a failing step, and fork the run from there.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Linux developers debugging flaky tests and builds
- Worth noticing
- The page describes forking a run under a new schedule, with up to 50 µs of timer slack to change how threads interleave.
Field notes
The described VM uses one vCPU on stock KVM, with a Rewind platform kernel controlling interrupts and time; the page says this makes the same inputs produce the same events at the same steps. Snapshots use KVM's dirty-page log, and the site says content-addressed storage lets pages shared across runs and forks be stored once.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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