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bench npm jumprope
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| // Read in a patch file and check that the patches all apply correctly. | |
| // Run with node --expose-gc (file) using input files from here: | |
| // https://github.com/josephg/crdt-benchmarks | |
| const fs = require('fs') | |
| const assert = require('assert') | |
| const zlib = require('zlib') | |
| const v8 = require('v8') | |
| const Rope = require('jumprope') | |
| const filename = process.argv[2] | |
| if (filename == null) { | |
| console.error(`Usage: $ ${process.argv.join(' ')} file.json[.gz]`) | |
| process.exit(1) | |
| } | |
| const { | |
| startContent, | |
| endContent, | |
| txns | |
| } = JSON.parse( | |
| filename.endsWith('.gz') | |
| ? zlib.gunzipSync(fs.readFileSync(filename)) | |
| : fs.readFileSync(filename, 'utf-8') | |
| ) | |
| // console.log('snapshot', v8.writeHeapSnapshot()) | |
| console.log(v8.getHeapStatistics()) | |
| console.log('heap', process.memoryUsage().heapUsed) | |
| const run = () => { | |
| gc() | |
| const startMemory = v8.getHeapStatistics().used_heap_size | |
| const r = new Rope(startContent) | |
| for (let i = 0; i < txns.length; i++) { | |
| // if (i > 20000) break | |
| // if (i % 10000 == 0) console.log(i) | |
| const {patches} = txns[i] | |
| for (const [pos, delHere, insContent] of patches) { | |
| // console.log(pos, delHere, insContent) | |
| if (delHere > 0) r.del(pos, delHere) | |
| if (insContent !== '') r.insert(pos, insContent) | |
| } | |
| } | |
| gc() | |
| console.log('RAM used:', v8.getHeapStatistics().used_heap_size - startMemory) | |
| console.log(r.toString().length) | |
| console.log(txns.length) | |
| // assert.strictEqual(r.toString(), endContent) | |
| } | |
| console.log('applying', txns.length, 'txns...') | |
| for (let i = 0; i < 10; i++) { | |
| // Warmup | |
| run() | |
| } | |
| console.time('apply') | |
| run() | |
| console.timeEnd('apply') | |
| // gc() | |
| console.log(v8.getHeapStatistics()) | |
| console.log('heap', process.memoryUsage().heapUsed) | |
| // console.log('snapshot', v8.writeHeapSnapshot()) | |
| // assert.strictEqual(state.text.toSpans().join(''), endContent) | |
| // assert.strictEqual(state.getText().toJSON(), endContent) |
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