Estoy intentando ajustar el tamaño del búfer ( stdout ) para la salida estándar de una llamada child_process.spawn(), y tengo dificultades para hacerlo con éxito. A continuación hay un código que ilustra lo que estoy buscando. Estoy tratando de realizar algunas evaluaciones comparativas con varios tamaños de búfer estándar, pero hasta que no pueda ajustar el tamaño del búfer, no podré hacerlo. ¡Cualquier consejo sería apreciado, gracias!

 // I'm using the `stdout` from a child_process.spawn() call to feed into another stream, and I'm having a hard time increasing the buffer size on stdout. // The code below illustrates the issue: const child_process = require('child_process'); const stream = require('stream'); const fs = require('fs'); const compressStream = child_process.spawn("cat", ["testfile_32MB"], {writableHighWaterMark: 1024*1024, highWaterMark: 1024*1024}); // <-- child_process.spawn does not have highWaterMark or writableHighWaterMark options, so including them has no effect, but I'm including it just as an illustration of what I want. compressStream.stdout.writableLength = 1024*1024; // <-- This does not help. compressStream.stdout._writableState.writableLength = 1024*1024; // <-- This does not help. compressStream.stdout._writableState.writableHighWaterMark = 1024*1024; // <-- This does not help. compressStream.stdout.writableHighWaterMark = 1024*1024; // <-- This does not help. compressStream.stdout._readableState.highWaterMark = 1024*1024; // <-- This does not help. compressStream.stdout._writableState.highWaterMark = 1024*1024; // <-- This does not help. compressStream.stdout.on("data", (data) => { console.log("data length [from spawn()]:", data.length); // <-- data.length will always be <= 64KB! How can we get it higher? }); const readStream = fs.createReadStream("testfile_32MB", {highWaterMark: 1024*1024}); readStream.on("data", (data) => { console.log("data length [from createReadStream()]:", data.length); // <-- This prints values <= 1MB, which is what I wish I had for child_process.spawn/stdout... });

Tenga en cuenta que necesitará un archivo llamado "testfile_32MB" para ejecutar este código de ejemplo, y debe tener al menos unos pocos megabytes de tamaño.