Messages in this thread | | | Date | Tue, 1 Aug 2017 20:19:10 +0000 (UTC) | From | Mathieu Desnoyers <> | Subject | [RELEASE] LTTng-modules and LTTng-UST 2.10.0 (KeKriek) |
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Hi,
Today, we release the 2.10 stable versions of LTTng kernel and user-space tracers. This release is named "KeKriek", which is a sour mashed golden wheat ale brewed by the Dunham microbrewery in Quebec.
The new features included are:
- A new "blocking" mode for LTTng-UST (it has been requested for a while). It blocks application tracing when buffers are full (for "discard mode tracing") rather than discarding events, until a user-specified timeout is reached (or indefinitely). It affects only applications launched with the LTTNG_UST_ALLOW_BLOCKING environment variable set, and channels configured with the "--blocking-timeout" option. See lttng-ust(3) for usage information.
This feature is useful if you intend to trace huge amounts of data from applications (e.g. all memory allocation/free, or detailed execution of a simulator) in use-cases where it is acceptable to block the traced application.
- Add support for multiple star-globbing patterns in LTTng-UST and LTTng-modules. Now events can be enabled with a pattern containing many wildcards, e.g. 'sche*_sw*t*h'. Those can also be used when comparing strings with filter, e.g.: lttng enable-event -u myevent --filter 'myfield == "abc*d*e*fg"'
- LTTng modules adds support for kernels 4.10, 4.11, 4.12 (which has been backported to 2.8 and 2.9 stable branches).
- LTTng modules adds the task CPU in threads state dump, improving precision of the scheduler model.
- LTTng modules now collects extend socketpair system call tracing data.
For more information on new features introduced in this version, see: http://lttng.org/docs/v2.10/#doc-whats-new
The 2.10.0 release marks the end of life for the old stable-2.8 branches. There will be one last stable-2.8 release for both lttng-modules and lttng-ust, after which they will become unsupported.
Project website: http://lttng.org Documentation: http://lttng.org/docs Download link: http://lttng.org/download
Changelog:
2017-08-01 (World Wide Web Day) LTTng modules 2.10.0 * Fix: Sleeping function called from invalid context * Fix: sched for v4.11.5-rt1 * Fix: handle missing ftrace header on v4.12
2017-08-01 (World Wide Web Day) lttng-ust 2.10.0 * lttng-ust(3): reword and fix style of `LTTNG_UST_ALLOW_BLOCKING` variable * lttng-ust(3): specify "If set" instead of "if set to 1" for some variables * Fix: doc/man: use a single XSL file and match local names * Fix: Expand the shmobj size for the sequence number
-- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com
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