Bun v1.4.1 reduces idle memory usage
Table: "Bun v1.4.1 reduces idle memory usage." Resident memory 3 minutes after 60 seconds of sustained load, lower is better. Columns: Bun 1.4.1, change vs 1.4.0, Bun 1.4.0, Bun 1.3.14, Node.js 26.7. Next.js SSR: 142 MB (−36%), 222, 1303, 195. Vite dev: 157 MB (−17%), 189, 303, 155. Express: 54 MB (−17%), 65, 77, 81. Fastify: 57 MB (−16%), 68, 80, 91. Elysia: 44 MB (no change), 46, 69, 96. Hono: 34 MB (no change), 35, 53, 92. Method: 60 s at a fixed request rate (40k req/s Elysia and Hono, 25k Express and Fastify, 5k Vite dev, 3k Next.js SSR), 64 connections, then 180 s idle; RSS sampled every 100 ms on Linux x64.

ALT Table: "Bun v1.4.1 reduces idle memory usage." Resident memory 3 minutes after 60 seconds of sustained load, lower is better. Columns: Bun 1.4.1, change vs 1.4.0, Bun 1.4.0, Bun 1.3.14, Node.js 26.7. Next.js SSR: 142 MB (−36%), 222, 1303, 195. Vite dev: 157 MB (−17%), 189, 303, 155. Express: 54 MB (−17%), 65, 77, 81. Fastify: 57 MB (−16%), 68, 80, 91. Elysia: 44 MB (no change), 46, 69, 96. Hono: 34 MB (no change), 35, 53, 92. Method: 60 s at a fixed request rate (40k req/s Elysia and Hono, 25k Express and Fastify, 5k Vite dev, 3k Next.js SSR), 64 connections, then 180 s idle; RSS sampled every 100 ms on Linux x64.

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Peak memory usage doesn't change much
Table: "Bun v1.4.1 peak memory usage." Peak resident memory (kernel high-water mark) during 60 seconds of sustained load, lower is better. Columns: Bun 1.4.1, change vs 1.4.0, Bun 1.4.0, Bun 1.3.14, Node.js 26.7. Fastify: 94 MB (−27%), 128, 163, 154. Next.js SSR: 265 MB (−11%), 299, 1653, 387. Vite dev: 280 MB (no change), 296, 495, 243. Elysia: 54 MB (no change), 57, 75, 115. Express: 86 MB (no change), 89, 153, 143. Hono: 48 MB (no change), 47, 63, 121. Same method: fixed request rate for 60 s, 64 connections, Linux x64.

ALT Table: "Bun v1.4.1 peak memory usage." Peak resident memory (kernel high-water mark) during 60 seconds of sustained load, lower is better. Columns: Bun 1.4.1, change vs 1.4.0, Bun 1.4.0, Bun 1.3.14, Node.js 26.7. Fastify: 94 MB (−27%), 128, 163, 154. Next.js SSR: 265 MB (−11%), 299, 1653, 387. Vite dev: 280 MB (no change), 296, 495, 243. Elysia: 54 MB (no change), 57, 75, 115. Express: 86 MB (no change), 89, 153, 143. Hono: 48 MB (no change), 47, 63, 121. Same method: fixed request rate for 60 s, 64 connections, Linux x64.

Sep 4, 2026 · 2:11 AM UTC

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Replying to @bunjavascript
Any benchmarks for nuxt ?
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