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Debugging [clear filter]
Friday, November 18
 

1:15pm EET

[SLIDES]Sasha Goldshtein @goldshtn - Modern Linux Tracing Landscape
The Linux kernel has multiple "tracers" built-in, with various degrees of support for aggregation, dynamic probes, parameter processing, filtering, histograms, and other features. Starting from the venerable ftrace, introduced in kernel 2.6, all the way through eBPF, which is still under development, there are many options to choose from when you need to statically instrument your software with probes, or diagnose issues in the field using the system's dynamic probes. Modern tools include SystemTap, SysDig, ktap, perf, bcc, and others. In this talk, we will begin by reviewing the modern tracing landscape -- ftrace, perf_events, kprobes, uprobes, eBPF -- and what insight into system activity these tools can offer. Then, we will look at specific examples of using tracing tools for diagnostics: tracing a memory leak using low-overhead kmalloc/kfree instrumentation, diagnosing a CPU caching issue using perf stat, probing network and block I/O latency distributions under load, or merely snooping user activities by capturing terminal input and output.

Speakers
avatar for Sasha Goldshtein

Sasha Goldshtein

MICROSOFT C# MVP & AZURE MRS, Sela Group
Sasha Goldshtein is the CTO of Sela Group, a Microsoft C# MVP and Azure MRS, a Pluralsight author, and an international consultant and trainer. Sasha is the author of "Introducing Windows 7 for Developers" (Microsoft Press, 2009) and "Pro .NET Performance" (Apress, 2012), a prolific... Read More →


Friday November 18, 2016 1:15pm - 2:10pm EET
1. Alfa

2:30pm EET

[SLIDES]David Ostrovsky @DavidOstrovsky - GPUs - Not Just for Graphics Anymore
When we talk about scaling, we usually mean up (bigger machine) or out (more machines). However, there is another alternative, which is changing our workload in a way that makes it inherently more parallelizable and then taking advantage of specialized hardware that's very good at handling that sort of thing. Most of us have exactly this type of hardware just sitting in our computers, doing very little most of the time. I'm talking, of course, about the GPU. General-purpose computing on the GPU (GPGPU) is no longer the domain of pure academic research. It is being used in real-world applications such as image processing and face recognition, cryptography, big data analysis, and Bitcoin mining. In this session we will examine the available GPGPU frameworks, learn how to integrate C++ AMP and OpenCL into regular .NET and Java applications, how to debug mixed .NET and GPGPU code in Visual Studio, and how to use the Aparapi framework to seamlessly mix regular CPU and GPGPU code in Java. We’ll even look at using GPGPU from server and client-side JavaScript with WebCL. We will discuss the kinds of tasks that can benefit from graphics card processing, how best to parallelize workloads, and what some of the performance trade-offs are.

Speakers
avatar for DAVID OSTROVSKY

DAVID OSTROVSKY

Chief Architect & Author, ProofPoint
When he was 9 years old, little David Ostrovsky found a book in Russian called "Electronic Computational Machines" at the local library and, after reading it cover-to-cover in a single weekend, decided that this was what he was going to do with his life. Three years later he finally... Read More →


Friday November 18, 2016 2:30pm - 3:25pm EET
2. Beta

3:45pm EET

[SLIDES]Dylan Beattie @dylanbeattie - Real-world REST and Hands-on Hypermedia
Most of us are familiar with the architectural style known as REST, but even experienced developers often find it difficult to translate REST's architectural principles into running code. In this talk, we'll explore the elements of REST related to hypermedia and the principle of "hypermedia as the engine of application state" (HATEOAS) - we'll talk about why they matter, and when you might want to implement them in your own systems. We'll look at some of the tools that exist to help you design, deliver and debug your HTTP APIs, and we'll do some hands-on coding to show you how to implement lightweight, flexibile hypermedia patterns in your .NET web applications using the NancyFX HTTP framework and the HAL hypermedia application language.

Speakers
avatar for DYLAN BEATTIE

DYLAN BEATTIE

System Architect, Skills Matter
Dylan Beattie is a systems architect and software developer, who has built everything from tiny standalone websites to large-scale distributed systems. He's currently the CTO at Skills Matter in London, where he juggles his time between working on their software platform, supporting... Read More →


Friday November 18, 2016 3:45pm - 4:40pm EET
4. Zeta
 

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