buffers {
  size_kb: 65536
  fill_policy: DISCARD
}
data_sources {
  config {
    name: "android.heapprofd"
    heapprofd_config {
      sampling_interval_bytes: 4096
      process_cmdline: "android.test.javaheapprof"
      shmem_size_bytes: 8388608
      block_client: true
      heaps: "com.android.art"
    }
  }
}
duration_ms: 60000;