Created
September 12, 2012 17:52
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Node resource monitor
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// modules | |
var fs = require('fs'); | |
var redis = require('redis'); | |
// config file | |
var config = require('./config'); | |
// redis client connect | |
var client; | |
function redisConnect() { | |
client = redis.createClient(config.redis.port, config.redis.host); | |
client.on("error", function (err) { | |
console.log("Redis "+err); | |
}); | |
} | |
redisConnect(); | |
// profiling | |
var timeOut = 5; | |
setInterval(function() { | |
date = new Date(); | |
data = fs.readFileSync('/proc/stat', 'utf8'); | |
lines = data.split("\n"); | |
line = lines[0]; | |
line = line.replace(/ +/,' ').split(/ /); | |
totalProc = line[1] + line[2] + line[3] + line[4]; | |
processor = 100 - (((totalProc - line[4]) * 100) / totalProc); | |
var memTotal, memFree; | |
data = fs.readFileSync('/proc/meminfo', 'utf8'); | |
lines = data.split("\n"); | |
memTotal = lines[0].replace(/[^0-9]/g, ''); | |
memFree = lines[1].replace(/[^0-9]/g, '') | |
ts = Math.round(date.getTime() / 1000) + date.getTimezoneOffset() * 60; | |
mem = process.memoryUsage(); | |
memoryNode = (mem.rss / 1024); | |
var profileData = { | |
ts: ts, | |
memRss: mem.rss, | |
memHeapTotal: mem.heapTotal, | |
memHeapUsed: mem.heapUsed, | |
processor: processor, | |
memory: 100 - ((memFree * 100) / memTotal), | |
memoryNode: (memoryNode * 100) / memTotal, | |
}; | |
client.zadd('profileStats', String(ts), JSON.stringify(profileData)); | |
// data purge | |
date = new Date(); | |
ts = Math.round(date.getTime() / 1000) + date.getTimezoneOffset() * 60; | |
// removing older than 10 minutes (600 secs) | |
ts -= 600; | |
client.zremrangebyscore('profileStats', 0, ts); | |
}, timeOut*1000); |
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