TESTING

The following environment variables change the way Kafka Benchmark test behave
("t/99_usage/03_kafka_bench.t"):

   # the IO timeout in secs
   KAFKA_BENCHMARK_TIMEOUT = 0.5

   # minimum length of test messages
   KAFKA_BENCHMARK_LEN_MIN = 200

   # maximum length of the test messages
   KAFKA_BENCHMARK_LEN_MAX = 200

   # number of messages for batch testing
   KAFKA_BENCHMARK_PACKAGE = 5000

   # number of messages for a single test
   KAFKA_BENCHMARK_SINGLE = 5