[lttng-dev] channel configuration and data, .ctf files

[John Smith]

Hi,
I have two questions:

1)

I configured a user-space session channel like:
lttng enable-channel  x -u -s y --overwrite -C 4194304 -W 16
--subbuf-size 16384

--tracefile-size = 4MB
--tracefile-count = 16
-subbuf-size = 4 * 4KB (PAGE_SIZE = 4KB)

in
lttng-traces/y_trace-20160113-xxx/ust/uid/1064/64-bit/

I see 32 files:

8192 .. x_trace_chan_0_0
...
8192 .. x_trace_chan_31_0

most of them of 8192 size and one of them (x_trace_chan_8_0) of 147456 size

How these number of files (32) and sizes (mostly 8KB) related to the
desired channel configuration as it looks like they don't, what are the
1-first and 1-nd digit in the _chan_N_M name significance?

2) I'd like to process the generated ctf files using babeltrace but
apparently there are no such files in lttng-trace directory, how can I
generate them, I suppose based on the data in x_trace_chan_N_0 files?

thanks, John
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lttng.org/pipermail/lttng-dev/attachments/20160113/0ab05cb6/attachment.html>