node のメモリ使用量を調べるスクリプト

たぶんこんな感じでいいんじゃないかな

% cat test.js
setInterval(function(){
    console.log(process.memoryUsage());
}, 1000);

実行

% node test.js
{ rss: 11472896, heapTotal: 4050688, heapUsed: 2216256 }
{ rss: 12091392, heapTotal: 5082624, heapUsed: 2751280 }
{ rss: 12103680, heapTotal: 5082624, heapUsed: 2764912 }
{ rss: 12107776, heapTotal: 5082624, heapUsed: 2770368 }
{ rss: 12115968, heapTotal: 5082624, heapUsed: 2775824 }
{ rss: 12124160, heapTotal: 5082624, heapUsed: 2781280 }
...