Linux Plumbers Conf 2009

This talk gives an overview of the new core V4L2 framework that was created in the past year, and the future developments planned for this framework.

It is compelling to integrate complex embedded systems with Linux USB userspace code. However, the complexity of userspace interface adds significant risk to the development cycle. Integrating a USB2.0 Isochronous mode ARM embedded system with Linux host software presents an end to end design challenge requiring not just a view of Linux from the 'inside' but also from the 'outside'. Some of the challenges Linux added to an already complex embedded system development will be presented, with some ideas to reduce the barries to entry and learning curve for embedded systems and host communication.

Discussing present and future git bisect features and how they can help application and kernel users and developers.

This talk will detail issues with Linux and large NUMA factor/COMA architectures.

Kernel Development and Testing with Autotest

A description of a KVM port to PowerPC 970 cores, also known as PowerPC64

Last years libv4l2 presentation ended with a slide future with bullet points of features to be added, so where we stand today? And what will happen in the coming year?

A discussion on how to manage KVM guests using CIM.

Explain the current state of kgdb, kdb. Discuss the future architectural plans for combining kgdb, kdb and kernel mode settings and proposed advanced single stepping APIs.

Running KVM in KVM, Xen in KVM, Hyper-V in KVM, ...

oFono telephony stack

The Out of Memory (OOM) killer has consistently been a hotly debated topic in Linux. Why does it kill? What is being done to improve it? What do users really need it to do?

Per backing device dirty data writeback replaces pdflush driven writeback in an attempt to speed up this operation.

The perfcounters infrastructures is fast moving into being the unifying channel for hw and software performance analisys

A case study of the Portland Oregon Regional Transportation Archive Listing (PORTAL) database on PostgreSQL and Linux.

A walk through the pieces of a modern Linux desktop, which manage the hardware that is coming and going and failing.

Aside from the internals of Linux Plumbing, some of the largest and most intricate examples of how Linux is plumbed is the variety of ways in which modern enterprise leverages Linux. One of the major issues affecting System Administrators and CIOs is how to appropriately manage legacy environments. Often systems reach the point where they have increasing TCO as vendors no longer supply security fixes and it becomes increasingly difficult to use current versions of our management tools. A number of the major linux distributions are now starting to twilight early enterprise distributions which still count for many thousands of Linux installs within businesses of every scale.

I present a new algorithm for scalable concurrent hash tables, performance results for this algorithm (2-10x more scalable than Linux), and potential applications.

Fine grained locking to improve scalability of the Linux VFS

Discusses pro and cons of a unified mechanism to report platform errors.

Co-conspirators Jamey Sharp and Josh Triplett get up to a lot of miscellaneous hacking mischief together. Much of this hacking occurs while staring at the same screen, and tag-teaming the keyboard. Sometimes this happens with the two of them in different places. Learn how we manage this and why it's awesome.

What can the Userspace RCU LGPL library do to help your application scale well on large multiprocessor systems ?

Video devices currently can only be open by one process at a time. This makes it impossible to do necessary things like software auto-focus or recording video while using ekiga.