◀️ Monitoring Coherence 🔗 Coherence Workspaces on VMs ▶️

The perf_test app provides scripts to ingest and transact mock data for testing Coherence throughputs and latencies. It provides a quick way to run your performance tests by configuring a few properties such as the payload size, the number of objects (entries), and the number of worker threads. Out of the box, these properties have already been pre-configured in etc/ingestion.properties and etc/tx.properties, which you can modify as needed to meet your test criteria.

The perf_test app also includes the test_group script that allows you to configure one or more groups of NamedCache operations and execute them in parallel. A group is analogous to a function that makes multiple NamedCache method calls in the order they are specified in the etc/group.properties file. The etc directory also contains the group-put.properties and group-get.properties files that have been preconfigured to invoke 22 put calls and 22 get calls on 22 different caches. You can configure the Near Cache in etc/client-config.xml to measure the throughput.

You can also ingest Customer and Order domain objects with mock data. These objects have been annotated with Hibernate such that you can synchronize Coherence with a database of your choice. See the CacheWriterLoaderPkDbImpl (Database Integration) section for configuration instructions.

All the test cases are performed on three (3) partitioned caches with a simple PBM (Pharmacy Benefit Management) data model that associates the client group number with group members. Simply put, all of the members that belong to a group are co-located in the same Coherence partition. This enables each Coherence member to complete transactions with their local datasets without encountering additional network hops.

There are two configuration files with preconfigured properties as follows:

• etc/ingestion.properties - This file defines properties for ingesting data into the eligibility and profile caches.
• etc/tx.properties - This file defines properties for performing transactions.
• etc/group.properties - This file defines properties for performing groups of NamedCache method calls.
• etc/group-put.properties - This file defines properties for making 22 put calls on 22 different caches in a single group.
• etc/group-get.properties - This file defines properties for making 22 get calls on 22 different caches in a single group. Note that group-put must be invoked first to ingest data.

You can introduce your own test criteria by modifying the properties the above files or supply another properties file by specifying the -prop option of the scripts described below.

The bin_sh/ directory contains the following scripts. By default, these scripts simply prints the configuration information obtained from the etc/perf.properties file. To run the test cases, you must specify the -run option.

./test_ingestion -?

Usage:
   test_ingestion [-run] [-prop <properties-file>] [-?]

   Displays or runs data ingestion test cases specified in the properties file.
   The default properties file is
      ../etc/ingestion.properties

       -run               Run test cases.
       <properties-file>  Optional properties file path.

   To run the the test cases, specify the '-run' option. Upon run completion, the results
   will be outputted in the following directory:
      /Users/dpark/padogrid/workspaces/myrwe/ws-intro/apps/perf_test/results

./test_tx -?

Usage:
   test_tx [-run] [-prop <properties-file>] [-?]

   Displays or runs transaction and query test cases specified in the properties file.
   The default properties file is
      ../etc/tx.properties

       -run               Run test cases.
       <properties-file>  Optional properties file path.

   To run the the test cases, specify the '-run' option. Upon run completion, the results
   will be outputted in the following directory:
      /Users/dpark/padogrid/workspaces/myrwe/ws-intro/apps/perf_test/results

Usage:
   test_group [-run] [-prop <properties-file>] [-?]

   Displays or runs group test cases specified in the properties file.
   A group represents a function that executes one or more Coherence NamedCache
   operations. This program measures average latencies and throughputs
   of group (or function) executions.
   The default properties file is
      ../etc/group.properties

       -run                Run test cases
        <properties-file>  Optional properties file path.

   To run the the test cases, specify the '-run' option. Upon run completion, the results
   will be outputted in the following directory:
      /Users/dpark/padogrid/workspaces/myrwe/ws-intro/apps/perf_test/results

The test_group script requires you to first build the environment by running build_app which downloads the required libraries.

./build_app

The test_group script inserts Customer and Order entity objects in to the cluster.

./test_group -prop ../etc/group-factory.properties -run

You can reconfigure group-factory.properties to add more data, threads, etc.

Upon successful run, the test results are outputted in the results/ directory. The following shows an example.

cat ../results/ingestion-profile-200531-153845_x.txt

Output:

******************************************
Data Ingestion Test
******************************************

                   Test Case: putall
                         Map: profile
           PutAll Batch Size: 100
              Test Run Count: 1
    Test Run Interval (msec): 0
   Total Entry Count Per Run: 10000
                Thread Count: 16
        Payload Size (bytes): 10240
                      Prefix: x
      Entry Count per Thread: 625

Start Time: Sun May 31 15:38:45 EDT 2020

Actual Total Entry (Put) Count: 10000

Time unit: msec
   Thread 1: 1067
   Thread 2: 1066
   Thread 3: 1110
   Thread 4: 1110
   Thread 5: 1095
   Thread 6: 1117
   Thread 7: 1109
   Thread 8: 1094
   Thread 9: 1112
   Thread 10: 1098
   Thread 11: 1108
   Thread 12: 1060
   Thread 13: 1069
   Thread 14: 1108
   Thread 15: 1107
   Thread 16: 1102

        Max time (msec): 1117
   Throughput (msg/sec): 8952.551
  *Throughput (KiB/sec): 89525.515
  *Throughput (MiB/sec): 87.427
 Latency per put (msec): 0.112
   **Total Volume (MiB): 100000
   **Total Volume (MiB): 97.656
   **Total Volume (GiB): 0.095
   Payload Size (bytes): 10240

 * Throughput does not take the keys into account.
   The actual rate is higher.
** Total Volume do not take the keys into account.
   The actual volume is higher.

Stop Time: Sun May 31 15:38:47 EDT 2020

◀️ Monitoring Coherence 🔗 Coherence Workspaces on VMs ▶️