Build Stuff'16 Lithuania

Everybody is now using virtualization, containers are all the rage today, and microkernels start to gain traction… But how is all this working? How did these solutions come to be? What are the differences between containers and virtual machines? Where and why should you use docker, runc, rocket, kvm, xen, virtualbox, includeOS, rancherOS? This talk is a full session providing understanding on how these technologies work, how they compare to each other, and lot’s of demo to understand differences and fundamental concept on isolation. So, let’s look under the hood, and understand how your system works (hint: it’s not magic). And yes, it will be understandable even if you are not an OPS or an expert. That’s precisely the point.

The Wix platform hosts over 80 million websites, with billions of visitors per day, all built using the Wix Editor. In this talk I will cover how we measure performance, and the techniques and methodologies we use to improve it. I'll examine the tools and frameworks that we use, and discuss what worked for us and what didn't.

Every software team writes code, but some teams produce fewer bugs than others. Every software team creates new features, but some teams develop them faster than others. What do high performance teams do differently, and why are team members more focused, satisfied and relaxed? They truly work together. No 10x rockstar programmer can achieve what a well rounded, enthusiastic team can.
Sven examines how the best software teams set and follow goals, integrate new members fast, ensure diversity, monitor and continually improve team health, embrace transparency, create new processes, use a playbook to guide them through every phase of development and even develop creative & flexible work spaces for multidisciplinary projects. He shares techniques including: sparring, OKRs, feature buddies, open demos, focus weeks and many more that help teams and team members to work more effectively together, and produce awesome results.

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.