performance.js

var performanceReport = function(perf) {
	if (perf == null)
        return console.log("No storage query was run yet!");

    var perc = n => isNaN(n) ? 0 : Math.round(n*1000.0)/10;
        
    var expectedEvents = 0, actualEvents = 0, cacheReads=0, cacheWrites=0, metrics = {}; 
    var count = {'init': 0, 'read': 0, 'flow': 0, 'misc': 0, 'filter': 0 };
    var time = {'init': 0, 'read': 0, 'flow': 0, 'misc': 0, 'filter': 0 };
   

    perf.storage.forEach(q => {
        expectedEvents += q.expectedEvents;
        actualEvents += q.actualEvents;
        time['init'] +=  q.initTime;
        time['read'] +=  q.readTime;
        time['filter'] +=  q.filterTime;
        count['init'] +=  q.initCount;
        count['read'] +=  q.readCount;
        count['filter'] +=  q.filterCount;
        
        if (q.cacheReads) cacheReads += q.cacheReads;
        if (q.cacheWrites) cacheWrites += q.cacheWrites;

        metrics[q.q] = {
            'detail': q.intervals.split(',').map(s=>s.split('-').map(a=>new Date(Number.parseInt(a)).toISOString()).map(a=>a.substring(0, a.length-5)).join(' to ')).join(','),
            'time': q.initTime + q.readTime + (q.filterTime || 0)
        };
    });

    perf.live.forEach(q => {
        time['flow'] +=  q.flowTime;
        time['misc'] +=  q.miscTime;
        count['flow'] +=  q.flowCount;
        count['misc'] +=  q.miscCount;

        metrics[q.q] = {
            'detail': q.url,
            'time': q.flowTime + q.miscTime
        };
    });

    console.table(metrics);

    var phases = Object.keys(time).reduce((obj, k) => {obj[k] = {'count':count[k], 'time':time[k], 'perc': perc(time[k]/perf.time)}; return obj}, {})

    console.group('Performance report');
    console.log('Total time:', perf.time, 'ms in', perf.count, 'passes');
    console.log('Live queries:', perf.live.length, '=> Storage queries:', perf.storage.length);
    console.log('Event count:', actualEvents , '/', expectedEvents,
            '/ cache reads', cacheReads, '(' + perc(cacheReads/actualEvents) +'%)', 
            'writes', cacheWrites, '(' + perc(cacheWrites/actualEvents) + '%)');
    console.table(phases);
    console.groupEnd();
    console.log();

}

performanceReport(Live.dashboardPerformance || Live.queryPerformance);