Kafka Instance TPS

Scenarios

TPS tests can be performed in the following scenarios:

• Scenario 1 (whether SASL is enabled): same topic, different SASL settings
• Scenario 2 (synchronous or asynchronous replication): same instance, topics with different replication settings
• Scenario 3 (synchronous or asynchronous flushing): same instance, topics with different flushing settings
• Scenario 4 (disk type): same topic, instances with different disk types
• Scenario 5 (number of partitions): same instance, topics with different number of partitions

Environment

Perform the following steps to set up the test environment.

1. Purchase Kafka instances with parameters specified in Table 1. For more information, see Buying a Kafka Instance.

   Table 1 Instance parameters

   Instance Name	Brokers	Broker Flavor	SASL	Storage space per broker
   kafka-01	3	kafka.2u4g.cluster	Yes	Ultra-high I/O
   kafka-02	3	kafka.4u8g.cluster	Yes	Ultra-high I/O
   kafka-03	3	kafka.8u16g.cluster	Yes	Ultra-high I/O
   kafka-04	3	kafka.12u24g.cluster	Yes	Ultra-high I/O
   kafka-05	3	kafka.16u32g.cluster	Yes	Ultra-high I/O
   kafka-06	3	kafka.2u4g.cluster	No	Ultra-high I/O
   kafka-07	3	kafka.4u8g.cluster	No	Ultra-high I/O
   kafka-08	3	kafka.8u16g.cluster	No	Ultra-high I/O
   kafka-09	3	kafka.12u24g.cluster	No	Ultra-high I/O
   kafka-10	3	kafka.16u32g.cluster	No	Ultra-high I/O
   kafka-11	3	kafka.2u4g.cluster	No	High I/O
   kafka-12	3	kafka.4u8g.cluster	No	High I/O
   kafka-13	3	kafka.8u16g.cluster	No	High I/O
   kafka-14	3	kafka.12u24g.cluster	No	High I/O
   kafka-15	3	kafka.16u32g.cluster	No	High I/O

2. Create topics with parameters specified in Table 2 for each instance purchased above. For details about how to create topics, see Creating a Kafka Topic.

   Table 2 Topic parameters

   Topic Name	Synchronous Replication	Synchronous Flushing	Replicas	Partitions
   topic-01	No	No	3	30
   topic-02	Yes	No	3	30
   topic-03	No	Yes	3	30
   topic-04	No	No	3	3
   topic-05	No	No	3	12
   topic-06	No	No	3	100

3. Obtain the test tool.

   Obtain Kafka CLI v2.7.2.

4. Purchase a server for the client.

   Buy a Linux ECS (with the same region, AZ, VPC, subnet, and security group as the Kafka instance). For details about how to purchase an ECS, see Purchasing an ECS.

   Perform the following operations on the ECSs:

   • Install Java JDK and configure the environment variables JAVA_HOME and PATH.

     export JAVA_HOME=/root/jdk1.8.0_231 
     export PATH=$JAVA_HOME/bin:$PATH

   • Download Kafka CLI v2.7.2 and decompress it.

     tar -zxf kafka_2.12-2.7.2.tgz

Script

./kafka-producer-perf-test.sh --producer-props bootstrap.servers=${connection address} acks=1 batch.size=16384 linger.ms=10 --topic ${topic name} --num-records 10000000 --record-size 1024 --throughput -1 --producer.config ../config/producer.properties

• bootstrap.servers: address of the Kafka instance obtained in 1.
• acks: message synchronization policy. acks=1 indicates asynchronous replication, and acks=-1 indicates synchronous replication.
• batch.size: size of messages sent in each batch, in bytes.
• linger.ms: interval between two batches.
• topic: topic name set in 2.
• num-records: total number of messages to be sent.
• record-size: size of each message.
• throughput: number of messages sent per second.

Result

Scenario 1 (whether SASL is enabled): same topic (30 partitions, 3 replicas, asynchronous replication, and asynchronous flushing), instances with SASL enabled or disabled. The test result is as follows.

Scenario 2 (synchronous/asynchronous replication): same instance (ultra-high I/O, three brokers, SASL disabled), topics with different replication settings, and number of producer processes is three. The test result is as follows.

Scenario 3 (synchronous/asynchronous replication flushing): same instance (ultra-high I/O, three brokers, SASL disabled), topics with different flushing settings. The test result is as follows.

Scenario 4 (different disk types): same topic (30 partitions, 3 replicas, asynchronous replication, and asynchronous flushing) with different disk types. The test result is as follows.

Scenario 5 (different numbers of partitions): same instance (ultra-high I/O, three brokers, SASL disabled), topics with different number of partitions. The test result is as follows.