{"podcast":{"title":"The Backend Engineering Show with Hussein Nasser","slug":"the-backend-engineering-show-with-hussein-nasser-847440","podcast_index_feed_id":847440,"rss_url":"https://anchor.fm/s/1eb6d14/podcast/rss","website_url":"https://database.husseinnasser.com","image_url":"https://d3t3ozftmdmh3i.cloudfront.net/production/podcast_uploaded_nologo/222061/222061-1626111277047-d82a050054721.jpg","author":"Hussein Nasser","episode_count":541,"summary":"Welcome to the Backend Engineering Show podcast with your host Hussein Nasser. If you like software engineering you’ve come to the right place. I discuss all sorts of software engineering technologies and news with specific focus on the backend. All opinions are my own. Most of my content in the podcast is an audio version of videos I post on my youtube channel here http://www.youtube.com/c/HusseinNasser-software-engineering Buy me a coffee https://www.buymeacoffee.com/hnasr 🧑‍🏫 Courses I Teach https://husseinnasser.com/courses","last_synced_at":"2026-07-11T00:20:07.790472+00:00","page_url":"https://stenobird.com/podcast/the-backend-engineering-show-with-hussein-nasser-847440"},"episode":{"title":"Postgres is half as fast in Linux 7.0","slug":"postgres-is-half-as-fast-in-linux-7-0","published_at":"2026-06-17T13:00:00+00:00","page_url":"https://stenobird.com/podcast/the-backend-engineering-show-with-hussein-nasser-847440/postgres-is-half-as-fast-in-linux-7-0","show_page_url":"https://stenobird.com/podcast/the-backend-engineering-show-with-hussein-nasser-847440","url":"https://podcasters.spotify.com/pod/show/hnasr/episodes/Postgres-is-half-as-fast-in-Linux-7-0-e3kt2l6","audio_url":"https://anchor.fm/s/1eb6d14/podcast/play/121587814/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2026-5-17%2F2e5b254c-aa75-928b-95c8-ab74c65ec8d6.mp3","summary":"An aws engineer discovered a 50% regression in postgres throughput while testing the new Linux 7.0 kernel. The cause turns out to be massive TLB and page faults exacerbated by Postgres process-based design. In this backend engineering show episode I dive deep into how this was discovered, the root cause and the possible fixes and workarounds. Intermediate and Advanced Backend Engineering Course Bundlehttps://courses.husseinnasser.com/bundleMy Book, Root Cause: Stories and Lessons from Two Decades of Backend Engineering Bugs https://amzn.to/4cKfZhe 0:00 Intro2:30 The Discovery6:30 Spinlocks9:25 Preemption 13:00 Root Cause17:00 How Postgres Processes exacerbated the problem 22:30 Is the fix easy?25:50 Summary","meta_description":"An aws engineer discovered a 50% regression in postgres throughput while testing the new Linux 7.0 kernel. The cause turns out to be massive TLB and page…","key_points":[],"chapters":[],"topics":[],"duration_seconds":2048,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/the-backend-engineering-show-with-hussein-nasser-847440/episodes/postgres-is-half-as-fast-in-linux-7-0/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/the-backend-engineering-show-with-hussein-nasser-847440/postgres-is-half-as-fast-in-linux-7-0.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}