Beginning with v.2020.001, parts of the Low-Latency Match service use port 9170. To use the service, open this port.

Configuring Low-Latency Match Service

• Throughput is the total time to match a set of records.
• Latency is the total time between request and first response.

To tune throughput and latency for the Low-Latency Match Service:

1. Set the value of the configuration variable TAMR_LLM_BATCH_SIZE to the expected largest batch size using the administration utility. See Creating or Updating a Configuration Variable.
   The default value is 1000.

• A lower value reduces latency while decreasing throughput.
• A higher value increases latency while increasing throughput.

2. Restart Tamr and its dependencies. See Restarting.