2012年2月21日

[RELEASE] LTTng 2.0 Release Candidates

LTTng, the Linux Trace Toolkit Next Generation, is a highly efficient
full system tracing solution toolchain. It is composed of several
components to allow tracing of the kernel, of userspace, trace viewing
and analysis and trace streaming. LTTng is open source software.

The LTTng toolchain is now entering Release Candidate cycle, which
means that we commit to stable APIs and ABIs (no breakage,
extension-only) across the entire 2.x series, and feature-freeze (no

extension) for the 2.0 series.

We plan to release LTTng 2.0 final on March 20, 2012.

For the entire RC time-frame the latest packages under section "Download
Toolchain Source Packages" from the following URL should be used:

http://lttng.org/lttng2.0

As a side-note, the babeltrace project, used for viewing/parsing CTF
traces, is entering its prerelease cycle, with version 1.0.0-pre1.

Project website: http://lttng.org
Download link: http://lttng.org/lttng2.0
(please refer to the README files for installation instructions and
lttng-tools doc/quickstart.txt for usage information)

Key Features:

- Efficient synchronized User-space and Kernel tracing using the same
time-source provides view of correlated kernel and user-space events.
- LTTng 2.0 kernel modules build against a vanilla or distribution
kernel, without need for additional patches,
- Tracepoints, detailed syscall tracing (fast strace replacement),
CPU Performance Monitoring Unit (PMU) counters, dynamic address/symbol
probing (kprobes) and function call/return tracing (kretprobes support),
- Have the ability to attach "context" information to events in the
trace (e.g. any PMU counter, pid, ppid, tid, comm name, etc).
All the extra information fields to be collected with events are
optional, specified on a per-tracing-session basis (except for
timestamp and event id, which are mandatory).
- Allows non-root users part of the "tracing" group to perform kernel
and userspace tracing.
- Allows multiple tracing sessions to be active concurrently, each with
its own instrumentation set.
- Integrated interface for both kernel and userspace tracing,
- Produces CTF (Common Trace Format) natively,
http://www.efficios.com/ctf)

--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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投稿者 xml-rpc : 2012年2月21日 06:25
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