Hi All, Thanks for attending the call today, here are the notes.
====== CFP for Linux Plumbers Sept 13-15, Los Angeles Tracing microconference accepted (Alexei, Brendan, Josef leading topics) http://wiki.linuxplumbersconf.org/2017:tracing Last year was successful, looking forward to more topics (tbd: find previous etherpad) ====== BCC has grown, albeit with some maturity/sore spots We have a well established core group, but probably need to expand our feedback to incorporate those that may not be speaking up. Think users of the tools rather than developers. How do we get broader user-group feedback besides mailing list/github issues? Brendan: #1 feedback he has heard - simplify syntax, still compared to dtrace awareness via conferences, etc. Alexei: internally, writing programs is hard, struggling with verifier - working on llvm improvements many kernel hackers @fb have hacked up bcc tools for their own use case Brenden: reach larger user group => collectd integration? command line users are the smaller subset of our potential audience intel snapd collectd others? Going forward: It's a big library, needs shrink/split both in terms of memory usage and disk size split out clang/llvm split out loader AI: get some proposals into bcc/issues, either in documentation form to start with, or code split header files split libraries start thinking about external tool integration ====== Alexei: has started thinking about program chaining (generically) mistake: tail call solved a need, but helper/map model makes it inflexible prog chaining should be a single native instruction (not done until now because "too hard to verify") now should be possible to introduce and verify cleanly direct, indirect, and tail call support (stack preserving) 3 new bpf instructions introduce global variables verifier changes started llvm support (looks like normal c) configurable stack upper bound of function loader would need to parse elf file main() function concept, still callable via tail call So far, the above is perhaps 10% compelete, so stay tuned. ====== Attendees: Alexei Starovoitov Bilal Anwer Jesper Brouer Martin Lau Mauricio Vasquez Brenden Blanco Andy Gospodarek Nic Viljoen Daniel borkmann Suchackra Sharma Brendan Gregg John Fastabend Teng Qin Jakub Kicinski Marco Leogrande
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