Perfetto Simple Producer

/usr/bin/perfetto_simple_producer

This executable is a simple producer of perfetto that generates sample track events. It should be only used in test images.

Sample steps:

1. Start traced if it has't been started.

   (device) start traced
   

2. Start a consumer that includes “track_event” data source in the trace config, and “perfetto_simple_producer” category.

   (device) perfetto -c - --txt -o /tmp/perfetto-trace \
   <<EOF
   
   buffers: {
     size_kb: 63488
     fill_policy: DISCARD
   }
   buffers: {
       size_kb: 2048
       fill_policy: DISCARD
   }
   data_sources: {
       config {
           name: "track_event"
           track_event_config {
               enabled_categories: "perfetto_simple_producer"
           }
       }
   }
   duration_ms: 10000
   
   EOF
   

3. Run the simple producer.

   (device) perfetto_simple_producer
   

4. Collect the trace at /tmp/perfetto-trace. It can be uploaded to the perfetto UI website and check if there are 4 tracks on the corresponding threads. And note that when uploading the file please make sure the file is readable by user chronos. Otherwise, the site will throw an error.