Geode Redis Module

Contents

1. Overview
2. Performance Test Scripts

Overview

The Geode Redis Module allows Geode to function as a drop-in replacement for a Redis data store, letting Redis applications take advantage of Geode’s scaling capabilities without changing their client code. Redis clients connect to a Geode server in the same way they connect to a Redis server, using an IP address and a port number.

Performance Test Scripts

###The benchmark.sh Script To run the performance tests, use the benchmark.sh script located in the geode-redis/src/performanceTest directory. This script uses the redis-benchmark command to measure performance of various Redis commands in requests per second. It runs the commands in two different ways. First it runs several clients in parallel, all testing the same command. Then it runs all the commands together in parallel, crudely simulating a variety of simultaneous operations.

Optional command line arguments for benchmark.sh:

• -h indicates the host to connect to (default: localhost)
• -p indicates the port to connect to (default: 6379)
• -t indicates the number of times the redis-benchmark command will run (default: 10)
• -c indicates the number of times the individual commands will run (default: 100000)
• -f indicates an optional prefix for the summary file name

The script will output a CSV file called [optional prefix_]benchmark_summary.csv which can be easily loaded into any spreadsheet program for analysis.

Sample output:

Command,Fastest Response Time (Msec),95th-99th Percentile (Msec),Slowest Response Time (Msec),Avg Requests Per Second
SET,1,8,43,13329
GET,1,4,15,17842
INCR,1,5,29,16069
MSET,1,7,732,11183
Parallel-SET,1,4,20,18460
Parallel-GET,1,4,21,18291
Parallel-INCR,1,4,20,18271
Parallel-MSET,1,4,21,17771

###Benchmark Helper Scripts The benchmark.sh script uses several helper scripts. The execute-operation.sh script runs a particular instance of redis-benchmark. The summarize-operation-results.sh script processes the output of execute-operation.sh, and the summarize-batch-results.sh script processes the output of multiple runs of summarize-operation-results.sh.

###The environment-setup.sh Script The environment-setup.sh is optional. It can start a local Geode Redis Adapter, or confirm that a local Redis server is running, then call benchmark.sh.

Mandatory command line arguments for environment-setup.sh:

• either -g or -r

-g will:

• Start a local Geode Redis Server for you
• Shut the server down once the benchmark finishes

-r will:

• Connect to a Redis server that is already running

Optional command line arguments for environment-setup.sh:

• -f indicates an optional prefix for the summary file name that will be passed to benchmark.sh

###The shacompare.sh Script The shacompare.sh script is used to compare performance between different commits. This script takes in two different commit hashes, checks them out, uses environment-setup.sh script to start up the Geode Redis server, and runs the benchmarks for each commit. It generates two summary CSV files, labeled with the short commit hash, that can be compared for performance changes.

Mandatory command line arguments for shacompare.sh:

• -b is the commit hash for the first commit you would like to compare
• -c is the commit hash for the second commit you would like to compare