[ltt-dev] Older lttctl man page?
rschmitt at airvana.com
Fri Mar 25 09:52:25 EDT 2011
I am trying to instrument/trace a 2.6.21 kernel. I believe the recommended ltt-control version for this linux is ltt-control-0.43-10082007. It also seems all the documentation and man pages I can find on lttctl are based on a later version of lttctl.
I have two questions:
1. can I use a newer version of lttctl on a 2.6.21 kernel (with the 2.6.21 lttng patches)
2. Is there a man page or documentation on how to use the previous lttctl command line?
If not, then I have specific questions. I do seem to have been able to capture a trace with the following:
lttctl -n trae1 -b -t /tmp/traces -l /mnt/debugfs/ltt -m hybrid
lttctl -n trace1 -f -t /tmp/traces -l /mnt/debugfs/ltt
this does populate /tmp/traces directory with an empty control directory and a file called flight-cpu_0
If I copy that directory off the embedded linux target to my linux host, place into the /tmp/traces directory on that linux host and attempt to run:
/usr/local/bin/lttv -m textDump -t /tmp/traces
I get a CRITICAL **: annot open trace /tmp/traces
followed by a Segmentation fault.
my lttv version is 0.8.82-09042007
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