Profiling .NET Server Applications

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Profiling .NET Server Applications Tugberk Ugurlu Redgate Software @tourismgeek http://tugberkugurlu.com

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tugberkugurlu.com

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@tourismgeek

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@redgate @RedGateCareers red-gate.com/careers

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Agenda • Nature of Server Applications • Profiling Application Logs and Server • Profiling Performance Problems • Profiling Memory Problems • Load Testing

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Server Applications • Applications Runs under IIS • Windows Services • Self-hosted Web Applications • Worker processes

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Characteristics of Server Applications • Stateless • Multiple Instances • Concurrent • Spreaded and Connected • Multiple Versions at the Same Time

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v1api.example.com v1api.example.com DB Worker-1 Worker-2 Worker-3 Worker-4 Message Queue System v2api.example.com v1api.example.com

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“Sometimes, you need all the connected process data to identify the problem.

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Logging • Rich Logging • Application Logs • Server Logs • Storing the Logs (Elasticsearch) • Centralized Logging (Logstash) • Analysing the logs (Kibana) • Log correlation

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Logging - Log Correlation

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DEMO TIME

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Application Performance Profiling • Identifying the problem • Pining the problem down

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ANTS Performance Profiler from Redgate

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ANTS Performance Profiler from Redgate

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DEMO TIME

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Application Memory Profiling • Identifying Memory Problems • Taking memory snapshots to analyse • Pinning the problem down

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ANTS Memory Profiler from Redgate

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ANTS Memory Profiler from Redgate

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ANTS Memory Profiler from Redgate

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DEMO TIME

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WinDbg and ProcDump • Dump file and WinDbg • WinDbg: https://msdn.microsoft.com/en- us/windows/hardware/hh852365.aspx • ProcDump: https://technet.microsoft.com/en- gb/sysinternals/dd996900.aspx C:\>procdump -ma outlook -p "\Process(Outlook)\Handle Count" 10000

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Server Profiling • Event Logs • Performance Counters

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Performance Counters

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Event Logs

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Load Testing

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Load Testing

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Network Profiling • Network problems • Watching what is being sent and recived • Fiddler • Wireshark

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www.red-gate.com/dotnet-tips

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Resources • ANTS Performance Profiler and ASP.NET 5: http://bit.ly/1LYO86Y • ASP.NET 5 Log Correlation: http://bit.ly/1Wiv08B • Assembly Memory Leak Sample: http://bit.ly/1HfbTWi • Memory Profiling an Application on IIS: http://bit.ly/1M0rEm7 • Performance Counters with PowerShell: http://bit.ly/1LFiuNO • Diving into Diagnostics on ASP.NET 5: http://bit.ly/1WmqJB2