Michael Freno
b53d4add29
One-off diagnostics behind the FFTW leak fix: init/destroy x50 RSS bound, Mach VM region walker, render-churn region growth, ffmpeg decode-stream region/rss sampling.
23 lines
915 B
TypeScript
23 lines
915 B
TypeScript
/** Scratch runner: decode stream, self-measure VM regions over time. */
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import { EpisodePcmCache } from "../src/utils/audio-pcm-cache"
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import { countRegions } from "./scratch-region-count"
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const wav = "/tmp/podtui-stream.wav"
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if (!(await Bun.file(wav).exists())) {
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await Bun.$`ffmpeg -f lavfi -i "sine=frequency=440:duration=600" -ar 22050 -ac 1 -sample_fmt s16 ${wav}`.quiet().nothrow()
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}
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const pcm = new EpisodePcmCache({ url: wav })
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Bun.gc(true)
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console.log(`start: ${JSON.stringify(countRegions())}`)
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pcm.startDecode(0)
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const t0 = Date.now()
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const buf = new Float64Array(512)
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while (Date.now() - t0 < 90_000) {
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await Bun.sleep(15_000)
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const pos = ((Date.now() - t0) / 1000) * 4
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pcm.readWindow(buf, pos)
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const c = countRegions()
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console.log(`t=${((Date.now() - t0) / 1000) | 0}s total=${c.total} r128k=${c.r128k} rss=${(process.memoryUsage.rss() / 1048576) | 0}MB`)
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}
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pcm.stop()
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console.log("done")
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