# Package org.apache.storm.perf

package org.apache.storm.perf

- Related Packages
  Package
  Description
  org.apache.storm
  org.apache.storm.perf.bolt
  org.apache.storm.perf.queuetest
  org.apache.storm.perf.spout
  org.apache.storm.perf.toolstest
  org.apache.storm.perf.utils
- Classes
  Class
  Description
  BackPressureTopo
  ConstSpoutIdBoltNullBoltTopo
  ConstSpout -> IdBolt -> DevNullBolt This topology measures speed of messaging between spouts->bolt and bolt->bolt ConstSpout : Continuously emits a constant string IdBolt : clones and emits input tuples DevNullBolt : discards incoming tuples.
  ConstSpoutNullBoltTopo
  This topo helps measure the messaging peak throughput between a spout and a bolt.
  ConstSpoutOnlyTopo
  This topo helps measure how fast a spout can produce data (so no bolts are attached).
  FileReadWordCountTopo
  This topo helps measure speed of word count.
  HdfsSpoutNullBoltTopo
  This topo helps measure speed of reading from Hdfs.
  KafkaClientHdfsTopo
  This topo helps measure speed of reading from Kafka and writing to Hdfs.
  KafkaClientHdfsTopo.LineWriter
  KafkaClientSpoutNullBoltTopo
  Benchmark topology for measuring spout read/emit/ack performance.
  LowThroughputTopo
  SimplifiedWordCountTopo
  StrGenSpoutHdfsBoltTopo
  This topo helps measure speed of writing to Hdfs.
  StrGenSpoutHdfsBoltTopo.LineWriter
  ThroughputMeter