[lttng-dev] Sub-buffer multiplicity on multi-core systems

Thibault, Daniel Daniel.Thibault at drdc-rddc.gc.ca
Thu Oct 10 08:33:56 EDT 2013


Date: Tue, 8 Oct 2013 17:57:23 -0400
From: J?r?mie Galarneau <jeremie.galarneau at efficios.com>

> In kernel tracing, ring buffers are separate per CPU, per channel.
> Each ring buffer is flushed into its own CTF data stream file. These
> streams are only "merged" by Babeltrace (or any other reader) while
> reading the trace.
>
> J?r?mie

   Thanks for confirming the 1:1 correspondence between channels and files.  I wanted to make sure I understood the ins and outs properly.

Daniel U. Thibault
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