The Ruby agent has built-in instrumentation for the
Delayed::Job library. No additional instrumentation is required.
Viewing background tasks
As long as the New Relic Ruby agent's gem or plugin is loaded before the
Delayed::Job worker starts, all tasks will be monitored with the same level of detail as controller actions. To view the actions themselves:
- Go to one.newrelic.com > APM > (select an app) > Monitor > Transactions.
- From the APM Transactions page, select Other transactions.
The Ruby agent depends on being able to identify that it is running under
Delayed::Job in order to correctly set up instrumentation. To do this, it examines the script name (the
$0 variable in Ruby) to see whether it ends with
If you have renamed the script you use to start your
delayed_job workers to something else, or if you have a custom script with a different name, you will need to explicitly tell the agent that you are using
Delayed::Job by setting the
NEW_RELIC_DISPATCHER environment variable to
delayed_job when starting your
Delayed::Job workers. For example:
NEW_RELIC_DISPATCHER=delayed_job bundle exec ./script/my_custom_script
If it appears that jobs are not being monitored, review the newrelic_agent.log file generated when the worker starts up. It should indicate whether the agent detects
Delayed and communicates with the server. If you do not find a log, or if you still cannot determine why the jobs do not appear, get support at support.newrelic.com.