Diagnosing a Linux Performance Regression
Posted3 months agoActive3 months ago
automattic.comTechstory
calmneutral
Debate
20/100
Linux PerformanceKernel RegressionNftables
Key topics
Linux Performance
Kernel Regression
Nftables
The post discusses a Linux performance regression diagnosis, and the discussion revolves around potential causes and alternative solutions, such as using nftables.
Snapshot generated from the HN discussion
Discussion Activity
Light discussionFirst comment
2h
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2
2-3h
Avg / period
1.3
Key moments
- 01Story posted
Sep 29, 2025 at 2:46 PM EDT
3 months ago
Step 01 - 02First comment
Sep 29, 2025 at 5:12 PM EDT
2h after posting
Step 02 - 03Peak activity
2 comments in 2-3h
Hottest window of the conversation
Step 03 - 04Latest activity
Sep 29, 2025 at 10:55 PM EDT
3 months ago
Step 04
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ID: 45417300Type: storyLast synced: 11/20/2025, 3:56:10 PM
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Not something recent in the kernel.
Anyone have stats on this?
nftables has been in mainline linux since 3.13 over a decade ago, and has been in the default in distros for a while (Debian 10 had it as default 6 years ago), but K8s support for it has lagged far behind, with it just recently out of beta in 1.33, and still not the default.