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tmp(memleak): try working with apdex score to restart, rather than

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response time
This commit is contained in:
Tyler Renelle 2014-10-23 16:40:48 -06:00
parent 87273ec680
commit 623175c312
1 changed files with 15 additions and 15 deletions
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30
src/middleware.js
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@ -33,22 +33,22 @@ module.exports.apiThrottle = function(app) {
module.exports.domainMiddleware = function(server,mongoose) {
if (nconf.get('NODE_ENV')=='production') {
var mins = 3;
var mins = 3, // how often to run this check
useAvg = false, // use average over 3 minutes, or simply the last minute's report
url = 'https://api.newrelic.com/v2/applications/'+nconf.get('NEW_RELIC_APPLICATION_ID')+'/metrics/data.json?names[]=Apdex&values[]=score';
setInterval(function(){
if (os.freemem() / os.totalmem() < 0.3) {
// Detect memory leak as high memory usage on the system.
throw 'Memory leak';
} else {
// see https://docs.newrelic.com/docs/apm/apis/api-v2-examples/average-response-time-examples-api-v2, https://rpm.newrelic.com/api/explore/applications/data
request({
//url: 'https://api.newrelic.com/v2/applications/APPLICATION_ID/metrics/data.json?names[]=HttpDispatcher&values[]=average_call_time&values[]=call_count&from=2014-10-14T2014-03-01T20:59:00+00:00:44:00+00:00&to=2014-10-14Tto=2014-03-01T21:59:00+00:00:14:00+00:00&summarize=true',
url: 'https://api.newrelic.com/v2/applications/'+nconf.get('NEW_RELIC_APPLICATION_ID')+'/metrics/data.json?names[]=HttpDispatcher&values[]=average_response_time&from='+moment().subtract({minutes:mins}).utc().format()+'&to='+moment().utc().format()+'&summarize=true',
headers: {'X-Api-Key': nconf.get('NEW_RELIC_API_KEY')}
}, function(err, response, body){
var avgResponseTime = JSON.parse(body).metric_data.metrics[0].timeslices[0].values.average_response_time;
if (avgResponseTime > 650 || avgResponseTime == 0) throw 'Memory leak';
})
}
// see https://docs.newrelic.com/docs/apm/apis/api-v2-examples/average-response-time-examples-api-v2, https://rpm.newrelic.com/api/explore/applications/data
request({
url: useAvg ? url+'&from='+moment().subtract({minutes:mins}).utc().format()+'&to='+moment().utc().format()+'&summarize=true' : url,
headers: {'X-Api-Key': nconf.get('NEW_RELIC_API_KEY')}
}, function(err, response, body){
var ts = JSON.parse(body).metric_data.metrics[0].timeslices,
score = ts[ts.length-1].values.score,
apdexBad = score < .75 || score == 1,
memory = os.freemem() / os.totalmem(),
memoryHigh = false; //memory < 0.1;
if (apdexBad || memoryHigh) throw "[Memory Leak] Apdex="+score+" Memory="+parseFloat(memory).toFixed(3)+" Time="+moment().format();
})
}, mins*60*1000);
}