Stream: git-wasmtime

Topic: wasmtime / Issue #2755 Cranelift: remove logging of vcode...

Wasmtime GitHub notifications bot (Mar 23 2021 at 16:29):

cfallin commented on Issue #2755:

This is fantastic, thanks! I'm curious: what logging crate did you have in your environment (or was this just in wasmtime)? There was a related issue we found recently that was fixed in tokio-rs/tracing#1247; though if a similar issue occurs with e.g. env_logger then that's good to know too, and we should audit regalloc.rs for unnecessary expression evals in tracing!

Wasmtime GitHub notifications bot (Mar 23 2021 at 18:48):

alexcrichton commented on Issue #2755:

For posterity we had more discussion on Zulip about this and I believe that this is actually not necessary and I shouldn't have approved so quickly. I was under the impression that the arguments to logging functions were always evaluated but that is not the case. Further investigation shows that @bnjbvr's local logger may be behaving badly which was causing the slowdown here.

Wasmtime GitHub notifications bot (Mar 23 2021 at 19:08):

bnjbvr commented on Issue #2755:

Yes, the log::max_level was set to the highest possible value by a dependency's default ctor. Sorry for the churn, will post a revert soonish.

Last updated: Dec 23 2024 at 12:05 UTC