Performance issue with version 5 of NR gem

[gstamp]

Recently we upgraded to our newrelic gem from 4.1.0.333 to 5.4.0.347 we ran into a performance hit.

This seems to be related to the calls to the media type renderer. Bypassing the renderer removes the performance hit completely.

[blanquer]

Glen,

That seems to be correct in 5.x We haven't had to change the gem in many years, and I am not quite familiar with the new changes in the agent.
I am happy to assist in getting this solved, but given my scarce time availability I cannot take this on at the moment.

Te workaround until that is in place is to disable the rendering instrumentation, like you suggested. For example:
ENV['NEW_RELIC_DISABLE_PRAXIS_BLUEPRINTS_INSTRUMENTATION'] = 'true'
or simply start the app with that env variable set.

Do you think you can help getting this resolved, or know somebody that can?