DevConf.cz 2018 has ended

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DevConf.cz 2018

DevConf.cz 2018 is the 10th annual, free, Red Hat sponsored community conference for developers, admins, DevOps engineers, testers, documentation writers and other contributors to open source technologies such as Linux, Middleware, Virtualization, Storage, Cloud and mobile where FLOSS communities sync, share, and hack on upstream projects together in the beautiful city of Brno, Czech Republic.

When: Friday, January 26 to Sunday, January 28, 2018

Venue: Faculty of Information Technology (VUT FIT - Božetěchova 2, Brno)

Reminders:

Friday 17:15: at the venue there will be a surprise show, stick around!
Saturday 19:00: the social event starts at Fleda Club. TICKET IS REQUIRED. Tickets will be distributed each day at check-in. First come, first serve.
Sunday 17:00: there will be many prizes given away at the closing session.

10:30am CET

Performance Tuning of Red Hat Linux

Limited Capacity seats available

"This presentation will describe how to configure and tune the Red Hat Entrerprise Linux kernel for optimal performance. The first section will discuss how to determine if a system running RHEL is a achieving optimal performance for a variety of commercial applications and industry standard benchmarks in terms of throughput and latency. The second section will explore a variety of kernel tuning parameters and discuss how each one effects the system performance. The third section will give actual examples of how RHEL was tuned to achieve industry leading performance for a variety of applications and benchmarks running on a variety of different hardware platforms."

Speakers

Larry Woodman

Sr Distinguished Engineer, Red Hat

Larry Woodman is a senior consulting engineer in the RHEL kernel engineering organization. He contributes to the upstream kernel a well as the RHEL kernels. Over the past 15 years that Larry has worked in the RHEL kernel engineering group he has fixed o

Saturday January 27, 2018 10:30am - 11:23am CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel

11:30am CET

Recent Locking Improvements in the Linux Kernel

Limited Capacity seats available

"The Linux locking primitives (spinlocks, rwlocks, mutex, rw semaphores
and futexes) have undergone substantial changes in recent years to
improve their performance and scalability. This talk will present
the new locking implementations like qspinlock, qrwlock as well as
improvements to existing mutex, rw semaphore and futex code bases. It
will also discuss new locking patches that are being proposed to be
merged in future kernel releases. After the session, the audience will
have a better understanding of the locking improvements and what to
expect in the near future."

Speakers

Waiman Long

Principal Software Engineer, Red Hat

Principal Software EngineerWaiman Long is an experienced kernel software engineer at Red Hat, Inc. His major focus areas are kernel synchronization primitives, performance and scalability, and cgroup in the upstream Linux kernel as well as the Red Hat Enterprise Linux kernel.

Saturday January 27, 2018 11:30am - 12:23pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel

12:30pm CET

KASan or how to get rid of memory corruption

Limited Capacity seats available

"Bugs that corrupts the memory are extremely annoying. The corruption is
often silent as it happens, and only become apparent later when the
corrupted address is being accessed, possibly by a totally unrelated
code, and all useful information about the context in which the
corruption occurred has been lost.

KASan (Kernel Address Sanitizer) is a tool that allow to catch the
faulty accesses that cause memory corruption as they happen, and thus
greatly facilitate the debugging of such issue

In this talk, I'll explain what are the common causes of memory
corruption, how KASan works, how to use it and, I hope, inspire kernel
developer to use it more."

Speakers

Jerome Marchand

Kernel engineer at Red Hat

Kernel engineer at Red Hat

Saturday January 27, 2018 12:30pm - 12:53pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel

1:00pm CET

Processor Architectures and Why You Should Care

Limited Capacity seats available

"With the slowdown and end of Moore's Law the focus of processor manufacturers and users in high performance computing shifts toward innovations in the architectures as opposed to automatic speed-ups due to process improvements. The problem is that fully taking advantage of the new processor features does not come for free. At least development tool developers but also programmers should know about them. This talk will give an overview of processor architectures (desktop, server, GPGPU, other accelerators) of various manufacturers and over time and into the future. The benefits and pitfalls are presented. Problems which can be solved well with the newly developed features and ways to implement solutions are presented."

Speakers

Ulrich Drepper

System Research & Data Science, CTO Office, Red Hat

Data Scientist, CTO Office

Saturday January 27, 2018 1:00pm - 1:53pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Development, Hardware, Platform / OS

2:00pm CET

An introduction to kernel hardening

Limited Capacity seats available

"Kernel developers have always been concerned with fixing bugs, especially when those bugs have security implications. There's been an effort recently towards more proactive security efforts to eliminate the severity of certain types of bugs. This effort has been given the name the Kernel Self Protection Project (KSPP). The goal of this talk is to give a brief introduction to kernel security and discuss both the technical and non-technical challenges to making the kernel more secure, including why this hasn't happened sooner."

Speakers

Laura Abbott

Fedora Kernel Engineer, Red Hat

Laura is currently employed Red Hat as a Fedora Kernel Engineer. She thinks kernels are really cool, even when they crash. Her day-to-day work involves bug fixes, tending the Fedora kernel releases, and other development work for the benefit of Fedora.

Saturday January 27, 2018 2:00pm - 2:23pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel, Security

2:30pm CET

SCHED_DEADLINE: Open Issues

Limited Capacity seats available

"The deadline scheduler adds the ability of scheduling tasks, according to a dynamic priority, based on the task’s deadline. Using the period, the runtime, and deadline, the scheduler tries to provide the runtime CPU time, at each period for each deadline task, providing the guarantee real-time tasks need, *under the perfect conditions*, these conditions are:

- Implicit deadline tasks
- Tasks should not self-suspend
- All the system’s delay must be taken into account
- The runtime must represent the worst-case execution time
- The system should not be overload

All these restrictions open the opportunity for improvements in the deadline scheduler. This presentation aims to list these points of improvement, point directions and challenges"

Speakers

Daniel Bristot de Oliveira

Principal Software Engineer, Red Hat

Daniel is a Principal Software Engineer at Red Hat, working in the real-time kernel team, and has a Ph.D. in Automation Engineering (UFSC)/Computer Engineering (Scuola Superiore Sant'Anna). He works in the research and development of real-time features and runtime formal verification... Read More →

Saturday January 27, 2018 2:30pm - 2:53pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel

3:00pm CET

What's up in Linux-Kernel land

Limited Capacity seats available

"This talk gives an overview of recent and current developments in the Linux kernel; it will discuss what major changes the latest kernel versions brought, what the next version will bring, and what the Linux developers are working on for future releases. In that scope the presentation will also discuss changes in software close to the kernel; that for example includes Mesa, as its 3D drivers and work hand in hand with the graphics drivers in the Linux kernel."

Speakers

Thorsten Leemhuis

Fedora.us contributor, Writer, Kernel regression tracker, Heise Medien: c't / heise open

Thorsten is writing a column called "Kernel Log", which regularly discusses developments in the Linux kernel and areas close to it. He also was a major Fedora contributor in the Fedora Extras days and helped getting the EPEL repository running. He also helps with Linux kernel regression... Read More →

Saturday January 27, 2018 3:00pm - 3:53pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel

4:00pm CET

Detecting the Linux kernel ABI changes

Limited Capacity seats available

"Linux kernel guarantees a stable ABI for the userland applications. However this is not the case for the kernel modules which have no guarantees from the kernel. Thus inspection and review of these changes is crucial for kernel module developers. In this talk we'll present traditional ABI changes detection techniques together with those based on comparison of the DWARF debugging data."

Speakers

Stanislav Kozina

Kernel Manager, Red Hat

Stanislav works as manager in the RHEL kernel engineering group. He helps to make RHEL the trusted platform of choice by running team of developers focused on kernel tracing and debugging.

Saturday January 27, 2018 4:00pm - 4:23pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel

4:30pm CET

Want more stable kernel? Fuzz it!

Limited Capacity seats available

"Fuzz testing is one of the software testing methods besides functional
testing, performance testing, etc. It used to find exceptions such as crashes,
failing built-in code assertions or potential memory leaks by providing
invalid, unexpected, or random data input.

In this topic we will talk about how fuzz testing make Linux kernel more stable.
First we will talk about the principle of fuzz testing. Then the types of
fuzzers, what's the difference, what's the good and bad points. How the kernel
fuzz testing development. And the last, how the new generation fuzz tool,
syz-kaller, works.

The topic talks only the basic theory and no experience needed. With this
topic attendees will know how fuzz testing works and find bugs. How to add new
feature test cases when develop new kernel features."

Speakers

Hangbin Liu

Senior Software Engineer, Red Hat

Senior Software Engineer

Saturday January 27, 2018 4:30pm - 4:53pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel, Testing

10:30am CET

What are FPGAs and How Do They Work

Limited Capacity seats available

"Even though FPGAs have been around for a long time most developers don't know enough about them. While their predominant use was in the embedded realm they are used now as alternative accelerator and server and desktop environments. This talk will explain how and why FPGAs differ from normal processors. At the example of one FPGAs the talk will introduce everything from the programming languages used, the tools to translate them, the binaries produced, and how the code finally gets executed."

Speakers

Ulrich Drepper

System Research & Data Science, CTO Office, Red Hat

Data Scientist, CTO Office

Sunday January 28, 2018 10:30am - 11:23am CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Development, Hardware

12:30pm CET

Nouveau - reverse engineering Nvidia GPUs

Limited Capacity seats available

"I want to give a overview about the Nouveau project and what challenges we deal with reverse engineering Nvidia GPUs. This includes security mechanisms Nvidia added over time to their GPUs to prevent us from doing our job. Having an open source GPU driver is important, because nearly everything somebody does on their Linux driven machine goes through the graphical stack and therefore a lot of sensible information goes through it and why should we trust closed source software with our stuff? Main topics will be which parts of the graphics stack we work on, our goals, what we have achieved already, what tools we are working with to trace the Nvidia driver, how somebody interested in this project can help out, what we currently are working on and what I would like to see implemented next."

Speakers

Karol Herbst

Nouveau Software Engineer

Working on Nouveau since September 2015

Sunday January 28, 2018 12:30pm - 1:23pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Community, Debugging / Tracing, Desktop, Development, Hardware, Kernel

1:30pm CET

Help fighting regressions in the Linux kernel!

Limited Capacity seats available

"Learn how to facilitate Linux kernel development by testing new kernels and reporting problems your find. This is important to make sure future Linux distribution run as good on your hardware as todays – which is in your own interest, as there is a high chance your systems are unique in this world and thus might trigger problems no one else will find while testing. .

To do this you'll learn how to install and run mainline kernel on Fedora, RHEL and CentOS without messing your system up. The talk will also explain how to report problems you find. During the talk Thorsten will also share some insights about his work as regression tracker for the Linux kernel."

Speakers

Thorsten Leemhuis

Fedora.us contributor, Writer, Kernel regression tracker, Heise Medien: c't / heise open

Thorsten is writing a column called "Kernel Log", which regularly discusses developments in the Linux kernel and areas close to it. He also was a major Fedora contributor in the Fedora Extras days and helped getting the EPEL repository running. He also helps with Linux kernel regression... Read More →

Sunday January 28, 2018 1:30pm - 2:23pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel

2:30pm CET

Out-of-tree kernel modules: some thoughts

Limited Capacity seats available

"The talk provides an overview of some techniques used for development, (back- and forward-) porting, and packaging of out-of-tree kernel modules for the various Linux distributions."

Speakers

Eugene Syromiatnikov

Senior Software Engineer, Red Hat

A strace developer. Used to work in an HPC-related field. Currently employed at Red Hat as a software engineer in the kernel maintainers team, responsible for producing Driver Updates, and maintenance of various RHEL packages, including strace and Intel CPU microcode updates.

Sunday January 28, 2018 2:30pm - 3:23pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Kernel

3:30pm CET

Unikernels in Action

Limited Capacity seats available

"Unikernels are a hot and contentious topic.

In this talk we will first introduce the concept of Unikernels, compare them to alternative technologies and look at developments of the last year - no revolution but various projects have advanced well.

We will see some real Unikernel demos of specialized networking applications running on Kubernetes/OpenShift"

Speakers

Michael Bright

Cloud Native Solution Architect

Passionate about Serverless, Containers, Orchestration and Unikernels! British, living in Grenoble, France for 25 years. I run a Python User Group, but am more of a polyglotte, passionate about new tech.

Sunday January 28, 2018 3:30pm - 3:53pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Cloud, Kernel, Networking, Platform / OS, Security, Virtualization

4:00pm CET

OpenHPC Introduction

Limited Capacity seats available

"Software provisioning is a common task repeated at many high performance computing (HPC) sites to provide the local users with scientific applications and libraries. As the effort to compile HPC software is known to be duplicated by many HPC sites, the idea to collaborate in a community led to the creation of the OpenHPC project.

In this talk I want to provide an introduction to OpenHPC, its community efforts and how it can help HPC sites.

In addition to the OpenHPC introduction I want to describe how the OpenHPC community effort is used as upstream for the CentOS HPC SIG. I want to present the current status of the HPC SIG and the future goals."

Speakers

Adrian Reber

Senior Principal Software Engineer, Red Hat

Adrian is a Senior Principal Software Engineer at Red Hat and is migrating processes at least since 2010. He started to migrate processes in a high performance computing environment and at some point he migrated so many processes that he got a PhD for that. Most of the time he is... Read More →

Sunday January 28, 2018 4:00pm - 4:23pm CET
B-D0206 Faculty of Information Technology (VUT FIT)

Kernel, Presentation

Host Organization Red Hat
Company Platform / OS