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Performance Benchmarks

Benchmarks for the Deserve router + DVE view rendering.

Setup

  • Load tool: autocannon (npm)
  • Default config used in this doc: 500 connections, pipelining 10, duration 30s

Quick Start

Start a server (from repo root), then run autocannon from another terminal.

Start Server

  • Non-worker mode (view routes + CPU on main thread):

    deno run --allow-net --allow-read benchmark/main.ts

  • Worker mode (enables /test-worker):

    deno run --allow-net --allow-read benchmark/main-worker.ts

Notes:

  • In non-worker mode, /test-worker returns 503 (worker not enabled).
  • All view routes (/test-view*) are available in both modes.

Run Benchmark

npx autocannon http://localhost:8000/test -c 500 -p 10 -d 30

Routes

JSON + CPU Comparison

Route What it does Why it exists
/test JSON only (no CPU work) Baseline throughput
/test-cpu 50k sqrt loop on main thread Event-loop blocking cost
/test-worker Same loop offloaded to a worker pool Offload overhead + scaling

DVE View Engine Routes

Route What it renders Why it exists
/test-view Simple variable render DVE baseline
/test-view-each-meta each block with metadata Loop + expression evaluation
/test-view-include Include + partial Composition overhead
/test-view-expr Optional chaining + expressions Expression parser/evaluator

Commands (Copy/Paste)

# JSON Baseline
npx autocannon http://localhost:8000/test -c 500 -p 10 -d 30

# CPU On Main Thread
npx autocannon http://localhost:8000/test-cpu -c 500 -p 10 -d 30

# CPU In Worker (Requires benchmark/main-worker.ts)
npx autocannon http://localhost:8000/test-worker -c 500 -p 10 -d 30

# DVE Views
npx autocannon http://localhost:8000/test-view -c 500 -p 10 -d 30
npx autocannon http://localhost:8000/test-view-each-meta -c 500 -p 10 -d 30
npx autocannon http://localhost:8000/test-view-include -c 500 -p 10 -d 30
npx autocannon http://localhost:8000/test-view-expr -c 500 -p 10 -d 30

Latest Results (30s, 500 Conn, Pipelining 10)

JSON + CPU (Example)

Non-worker — benchmark/main.ts:

Route Test 1 Test 2 Test 3 Req/Sec (avg) Latency (avg) Total (avg)
/test 175,343 170,567 164,515 170,142 29 ms 5109k
/test-cpu 25,009 24,949 24,927 24,962 199 ms 754k

Worker-enabled — benchmark/main-worker.ts:

Route Test 1 Test 2 Test 3 Req/Sec (avg) Latency (avg) Total (avg)
/test 174,259 178,487 170,834 174,527 28 ms 5.24M
/test-cpu 25,133 24,833 24,773 24,912 199 ms 752k
/test-worker 69,265 69,063 68,810 69,046 72 ms 2076k

Takeaway: /test-cpu blocks the event loop; /test-worker moves the same work off-thread.

Views (DVE Rendering Baseline)

Route Test 1 Test 2 Test 3 Req/Sec (avg) Latency (avg) Total (avg)
/test-view 129,063 124,978 120,516 124,852 39.77 ms 3.75M
/test-view-each-meta 10,406 10,381 10,073 10,287 482.13 ms 313k
/test-view-include 112,115 109,558 101,886 107,853 46.02 ms 3.24M
/test-view-expr 96,328 94,207 82,094 90,876 54.84 ms 2.73M

Files

  • benchmark/main.ts: server entry (non-worker)
  • benchmark/main-worker.ts: server entry (worker-enabled)
  • benchmark/routes/*.ts: route handlers
  • benchmark/views/*.dve: DVE templates