GopherCon 2018 - CGo Performance

29 August 2018

conference, golang, gophercon2018, notes

These are some notes from my experiences at the GopherCon 2018. I don’t expect these will be laid out in any particularly useful way; I am mostly taking them so I can remember some of the bits I found most useful in the future.

Calling Go from Pony

Why???

• Wallaroo (go and python)
• For “big data stuff”
• Framework for horizontally scaling event stream processing

Performance

• From cockroachdb blog post

• Calling go -> go is ~2ns

• Calling go -> C is ~171ns

• Calling C -> go is ~1-6ms (milli, not micro)

  • WTF?!?!
  • Thread started outside go trying to call into go runtime
  • LOTS of work

• Try to batch calls