By compiling with FPO disabled developers will have complete access to call stacks and events generated by a process. The Windows Client Performance Team recommends that all binaries, including release images, be compiled with FPO disabled. Windows binaries from Vista onward are compiled with FPO disabled. Disabling FPO allows Windows Performance Analyzer to collect complete sets of call stack data. We are considering holding a Size/IOT meeting at ELC Europe.The binaries to be used for the data collection must be compiled with Frame Pointer Omission optimization (FPO) disabled.

Discussion on proposed ways to make the kernel tiny, how much they might save, how much work they'd require, and how to implement them with minimal impact to the un-shrunken common case.

Optimizing a kernel for its exact target userspace.

Kconfig, and avoiding excessive configurability in the pursuit of tiny.

Size measurement, bloat-o-meter, allnoconfig, and other tools.

How size regressions happen and how to avoid them.

How much the kernel has grown over time.

An overview of why the kernel's size still matters today ('but don't we all have tons of memory and storage?').

His draft list of proposed topics was the following: Josh Triplett has proposed a session discussing size issues at the 2014 Kernel Summit. Meetings and Discussions Kernel Summit 2014

Emcraft Systems sells a variety of microcontroller-based boards and products.

meta-micro (OE-based small distro - last work in 2012).

extreme microcontroller Linux (<256K RAM).

Vitaly Wool - e-mail: vitaly dot wool at softprise dot net.

Tim Bird - e-mail: tim dot bird at sonymobile dot com.

Shinsuke Kato - e-mail: kato dot shinsuke at jp dot panasonic dot com.

Alan Cox - email: alan dot cox at linux dot intel dot com.

Andi Kleen - e-mail: ak at linux dot intel dot com.

Tom Zanussi - e-mail: tom dot zanussi at linux dot intel dot com.

Josh Triplett - e-mail:josh at joshtriplett dot org.

People or groups interested in size reductions individuals

use U of Gent code to re-try cold code compression.

here is a report on this work getting started.

refactor strings in the kernel so that they are more efficiently used.

replace kernel stack with user-space stack (LWIP).

List of recently used techniques Vitaly Wool's project Linux for Microcontrollers: Spreading the Disease (PDF) - presented at ELC in April 2014.Vitaly Wool described running 2.6.33 on an ST microcontroler with 2MB flash and 256K ram (2014).microYocto and the Internet of Tiny (PDF) - Presentation by Tom Zanussi at ELC 2014.

Micro-Yocto is an effort in the Yocto Project to produce a minimal kernel for very small embedded systems.Tom Zanussi and the Micro-yocto project (2014).4 People or groups interested in size reductions.

How to find kernel stack size