Post · bonfire.cafe

@h4ckernews@mastodon.social · 1 hour ago

When "idle" isn't idle: how a Linux kernel optimization became a QUIC bug

https://blog.cloudflare.com/quic-death-spiral-fix/

#HackerNews #Linux #QUIC #optimization #bug #idle #performance #kernel

The Cloudflare Blog

When "idle" isn't idle: how a Linux kernel optimization became a QUIC bug

We investigated a bug where CUBIC's congestion window became pinned at its minimum floor, causing a performance to plummet. The fix involved correctly measuring idle periods to distinguish RTT wait times from actual application idleness.

#idle #quic #optimization #bug #performance #kernel #hackernews #linux

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