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Help us Improve the Usability of the TMF Viewer

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École Polytechnique de Montréal is welcoming an intern in software ergonomy. Ludovic Lefebvre will contribute to identifying problems with TMF, the Eclipse viewer used with traces from LTTng, and make updates which will make it more user-friendly.

The questionnaire will help understand the usage one does with TMF and how it is perceived. It takes approximately 10 minutes to complete and is anonymous.

Your feedback is welcome, whether you are a long time user of TMF or just starting. Ludovic can be contacted directly at ludovic.lefebvre@polymtl.ca.

Thanks you for your help.

Babeltrace 1.2.0

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After almost a year in the making, Babeltrace v1.2 is out and packs a host of great features!

The first of which is the CTF-Writer API which provides an easy way for applications to produce CTF traces. This API is not meant as a tracing solution. It provides an easy way to write spec-compliant trace converters, merge existing traces and, perhaps, add CTF logging capabilities in low event throughput applications where integrating LTTng would prove impractical.

We have also overhauled and integrated the Python bindings branch into this release. These bindings now provide an easy way for Python application developers to read and produce CTF traces. Have a look at the example scripts to learn how you can roll out your own trace analysis and conversion tools!

Finally, we added an LTTng live (lttng-live) plugin which leverages LTTng 2.4's brand new live tracing feature. See the LTTng 2.4 release notes for more details on this feature.

Babeltrace 1.2.0 Changelog

Userspace RCU 0.8.3 and 0.7.11

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Sorry about the quick releases, but I though I should save our packagers some time by releasing this fix, so they can skip over yesterday's version. It fixes a higher-than-normal CPU usage in presence of long RCU read-side critical sections. It does not affect correctness of RCU, just the amount of CPU usage in very specific scenarios. Since there is only one new commit, I'm putting the full commit changelog (from the stable-0.8 branch) below.