fche changed the topic of #systemtap to: http://sourceware.org/systemtap; email systemtap@sourceware.org if answers here not timely, conversations may be logged
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<gromero>
Hi fche. A long time ago you said to me about using systemtap:
<gromero>
Mai 30 21:47:19 <fche> we'd love to hear about your successes (& failures) with it, drop us a note sometime if able
<fche>
gromero, is there a little writeup of the systemtap side of the investigation?
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<gromero>
fche: systemtap was fundamental to that finding. there is currently not a text on that (I hope to write a account of it tho). here is all my systemtap stuff I used (including crafted tapsets): https://github.com/leitao/htm_torture/tree/isolation/systemtap
<fche>
htm_torture -- now there's a word I like
<gromero>
fche: lol
<gromero>
yup, torture was the first step. systemtap enabled me to inspect what was really happening in kernel space
<gromero>
transactional memory is beast to debug on PowerPC (you can't use gdb becasue kernel aborts TM on syscalls)
<gromero>
I also used systemtap to discover a register corruption on userspace when TM rollbacked. So I had to use this dirty hack: