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minutes: IO Visor TSC and Dev Members Call
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Brenden Blanco <bblanco@...>
Here are the meeting minutes from yesterday. Please note the gdoc link regarding the roadmap items.
Please also encourage those you know to sign up for the iovisor-dev mailer, I know there are continually people I'm adding in cc that should be on this list!
Tom to send email on logistics for XDP summit next week (done)
24+ signed up, no more possible
Topics to discuss (agenda to come later)
XDP implementation: brenden
Netronome update on bpf on HW
lb concepts, no demo
How to load/offload bpf programs api-wise
Topic owners to send proposals (to Tom?) by Friday
main issue is not features, but usability
lots of new users stumble on introductory stuff
like wrong kernel version
undocumented api (what is a program type?)
many samples don't work, obscure errors
ast: verifier errors to be improved
todo: many llvm e.g. padding issues
ast: working in xdp to change packet size
faster/better string support in the kernel, e.g. filenames, cgroupv2, secmark (sp?)
inlining of map lookups for perf optimization
32 bit subregister in llvm
vectorization with annotations from the compiler, used for hardware offloads
debugability: hash of bpf programs
I have added the above to:
please feel free to add thoughts there, or we can work on this document on Tuesday.
interesting and inevitable
bpf as optional runtime
"can't implement strings/stats without bpf enhancements"
- needs more detail, global strings?
inconveniences seen so far:
missing examples for usdt, tracepoints
add llvm error checker?
Hannes Frederic Sowa
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