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Feature #922

open

Expose cpu_id as a context field in lttng-tools (add-context)

Added by Jérémie Galarneau over 9 years ago. Updated almost 3 years ago.

Status:
Feedback
Priority:
Normal
Assignee:
-
Target version:
LTTng - 2.9
Start date:
09/01/2015
Due date:
% Done:

100%

Estimated time:
(Total: 0.00 h)

Subtasks 1 (0 open — 1 closed)

Feature #923: Document cpu_id contextResolved09/01/2015

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 #1

Updated by Jérémie Galarneau over 8 years ago

  • Target version changed from 2.8 to 2.9
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 #2

Updated by Michael Jeanson almost 3 years ago

  • Status changed from New to Resolved
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 #3

Updated by Mathieu Desnoyers almost 3 years ago

  • Status changed from Resolved to Feedback

Currently, the "cpu_id" context can only be used from filters, not from add-context.

Because we have per-cpu buffers, we happen to have the cpu_id available in the packet header, and we use it at post-processing. However, if in the future we introduce either global buffer support or per-virtual-cpu-id buffers, then introducing add-context support for cpu_id will become relevant.

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