OpenFn / OpenFn/kit

Runtime: large discrepency between step time and operation time?

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#876 10 comments 0 reactions 1 assignee View on GitHub

@josephjclark is already working on this.

Since Feb 20, 2025.

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Description

Eagle-eyed Taylor Downs has spotted a really interesting timing discrepancy within the runtime.

Note that that this is in the runtime logs, so we can discount all the worker eventing and spin up stuff.

R/T Starting step Map Data
R/T [linker] loading module @openfn/language-common
R/T [linker] Loading module @openfn/language-common from /tmp/openfn/worker/repo/node_modules/@openfn/language-common_2.3.0/dist/index.cjs
R/T Resolved adaptor @openfn/language-common to version 2.3.0
R/T Executing expression (1 operations)
R/T Starting operation 1
R/T Operation 1 complete in 1ms
R/T Expression complete!
R/T Map Data completed in 464msms

Specifically this:

R/T Operation 1 complete in 1ms
R/T Map Data completed in 464msms

User code only took 1ms, but the whole step took 464? Why?

Questions:

  • Can we reproduce this locally?
  • What is taking the time to execute a step, if not the the actual operations?

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