> ## Documentation Index
> Fetch the complete documentation index at: https://docs.appsignal.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Ignore instrumentation

## Ignore instrumentation events

A web request or background job sample can contain many instrumentation events shown on the event timeline. However, not all events are essential as they may not provide significant or valuable insights into a sample's performance, and seeing a high number of events can make it difficult to spot problematic areas on the timeline.

If the application has a place that creates a lot of events, like queries, external requests, or rendering views, the Ruby gem can ignore these events using the `ignore_instrumentation_events` helper.

(In Ruby gem 3.10 and older the `ignore_instrumentation_events` helper is called `without_instrumentation`).

<CodeGroup>
  ```ruby Ruby theme={null}
  class BackgroundWorker
    def perform
      Appsignal.ignore_instrumentation_events do
        10_000.times do
          Appsignal.instrument "event_name.group_name" do # This instrumentation event will not be reported
            # Do complicated calculations
          end
        end
      end
    end
  end
  ```
</CodeGroup>

The `ignore_instrumentation_events` helper will ignore events reported by the `instrument` helper. The Ruby gem will continue reporting errors and metrics that occur within this block. The `ignore_instrumentation_events` helper does not affect the sample's total duration.