Heapdump code. Plug this into Ghost's index.js to instrument Ghost & inspect memory usage.

heapdump.js

var heapdump = require('heapdump');
var nextMBThreshold = 0;

function recordMemory() {
    var usage = process.memoryUsage();
    var memMB = usage.rss / 1048576;
    console.log('MEMORY', usage);
    if (memMB > nextMBThreshold) {
        heapdump.writeSnapshot();
        nextMBThreshold += 100;
    }
}

setInterval(recordMemory, 6000 * 2);
recordMemory();

// without the heapdump

function recordMemory() {
    console.log('MEMORY', process.memoryUsage());
}

setInterval(recordMemory, 6000 * 2);
recordMemory();