babeltrace2-query-babeltrace.trace-infos − Babeltrace 2's trace infos query object
The babeltrace.trace-infos Babeltrace 2 query object indicates time range information about specific traces and their streams, and which output ports of an eventual source component will serve the messages for a given stream.
The babeltrace2-convert(1) command queries this object from all the source component classes to support the --stream-intersection feature.
The parameters for this query operation are exactly the same as you would pass as the initialization parameters of a component created from the queried component class.
The result object is an array of trace info maps (see “Trace info map”).
A trace info map contains:
stream-infos=STREAM−INFOS [array of stream info maps]
Stream info maps (see “Stream info map”) for this trace.
A stream info map contains:
range-ns=RANGE [range map]
The time range of this stream, a map containing:
begin=NS [signed integer]
Beginning time of this stream (nanoseconds since the stream class’s default clock class’s origin).
end=NS [signed integer]
End time of this stream (nanoseconds since the stream class’s default clock class’s origin).
port-name=PORT−NAME [string]
For an eventual source component initialized with the same parameters: name of the output port which serves the messages of this stream.
Example 1. Two trace infos: one with three stream infos, one with two stream infos.
−
stream−infos:
− range−ns:
begin: 1509556764975082000
end: 1509557102181554400
port−name: trace0−cpu0
− range−ns:
begin: 1509556764947050800
end: 1509557102182771000
port−name: trace0−cpu1
− range−ns:
begin: 1509556764956409300
end: 1509557102182770400
port−name: trace0−cpu2
− stream−infos:
− range−ns:
begin: 1509556764918082000
end: 1509557103849928400
port−name: trace1−cpu0
− range−ns:
begin: 1509556761888820000
end: 1509557109928100400
port−name: trace1−cpu1
If you encounter any issue or usability problem, please report it on the Babeltrace bug tracker (see <https://bugs.lttng.org/projects/babeltrace>).
The Babeltrace project shares some communication channels with the LTTng project (see <https://lttng.org/>).
• Babeltrace website (see <https://babeltrace.org/>)
• Mailing list (see <https://lists.lttng.org>) for support and development: [email protected]
• IRC channel (see <irc://irc.oftc.net/lttng>): #lttng on irc.oftc.net
• Bug tracker (see <https://bugs.lttng.org/projects/babeltrace>)
• Git repository (see <https://git.efficios.com/?p=babeltrace.git>)
• GitHub project (see <https://github.com/efficios/babeltrace>)
• Continuous integration (see <https://ci.lttng.org/view/Babeltrace/>)
• Code review (see <https://review.lttng.org/q/project:babeltrace>)
The Babeltrace 2 project is the result of hard work by many regular developers and occasional contributors.
The current project maintainer is Jérémie Galarneau <mailto:[email protected]>.
This query object is part of the Babeltrace 2 project.
Babeltrace is distributed under the MIT license (see <https://opensource.org/licenses/MIT>).
babeltrace2-intro(7), babeltrace2-query(1), babeltrace2-convert(1)