Ruby agent v10.9.0

v10.9.0

• Feature: Continuous Profiling (preview)

  Continuous Profiling is a new feature which is not yet generally available for use. The agent-side component code is now present in the agent but to actually use it ahead of the General Availability release, you will need to contact your New Relic sales representative to join the preview early.

  Continuous Profiling repeatedly samples the Ruby call stacks of your running application and reports them to New Relic, so you can see which methods are consuming the most CPU time (or allocating the most objects) in production, without adding code to your app.

  To turn it on, add the stackprof and google-protobuf gems to your application's Gemfile, then set profiling.enabled to true:

  profiling.enabled: true

  Copier

  With only profiling.enabled set, the agent samples CPU time every 10 milliseconds for the life of the process. These options let you tune that behavior:

  Configuration name	Default	Behavior
  profiling.enabled	false	If true, the agent collects and reports continuous profiling data.
  profiling.include	cpu	What to sample: cpu for CPU time, or object for object allocations.
  profiling.sample_period	0.01	Seconds between stack samples. Only used when profiling.include is cpu. Must be between 0.000001 and 0.999999.
  profiling.object_allocation_interval	10000	Object allocations between stack samples. Only used when profiling.include is object. Must be between 1000 and 999999.
  profiling.delay	0	Milliseconds to wait before profiling starts. 0 starts immediately.
  profiling.duration	0	Milliseconds to profile before stopping automatically. 0 profiles until the process exits.

  PR#3617

• Feature: Add support for Dalli 5.1.1

  Dalli 5.1.1 added arguments to some of the methods the agent instruments, which could raise an ArgumentError on multi-key operations or cause request options to be silently dropped. Now, the agent accepts and forwards a variable number of positional and keyword arguments for these methods. PR#3683