Meeting Performance Goals for Azure Deployments: Listing 2.

Adding performance counters.

• By Joseph Fultz
• 05/17/2012

public override bool OnStart()
        {
            bool collectCountersForLoad = default(bool);
            collectCountersForLoad = bool.Parse(RoleEnvironment.GetConfigurationSettingValue("LoadTesting"));
            List<string> countersToWatch = new List<string>();

            if (collectCountersForLoad)
            {
                TimeSpan sampleInterval = TimeSpan.FromSeconds(5);
                countersToWatch.Add(@"\Processor(_Total)\% Processor Time");
                countersToWatch.Add(@"\.NET CLR Memory(_Global_)\Gen 0 heap size");
                countersToWatch.Add(@"\.NET CLR Memory(_Global_)\Gen 1 heap size");
                countersToWatch.Add(@"\.NET CLR Memory(_Global_)\Gen 2 heap size");

            }

            // To enable the AzureLocalStorageTraceListner, uncomment relevent section in the web.config  
            DiagnosticMonitorConfiguration diagnosticConfig = DiagnosticMonitor.GetDefaultInitialConfiguration();
            diagnosticConfig.Directories.ScheduledTransferPeriod = TimeSpan.FromMinutes(1);
            diagnosticConfig.Directories.DataSources.Add(AzureLocalStorageTraceListener.GetLogDirectory());

            foreach(string counter in countersToWatch)
            {
                diagnosticConfig.PerformanceCounters.DataSources.Add(new PerformanceCounterConfiguration
                                                                        {   CounterSpecifier = counter,
                                                                            SampleRate = TimeSpan.FromSeconds(5)
                                                                        }
                                                                    );
            }

            DiagnosticMonitor.Start("Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString", diagnosticConfig);
            // For information on handling configuration changes
            // see the MSDN topic at http://go.microsoft.com/fwlink/?LinkId=166357.

            return base.OnStart();
        }