Run memcached on Arm servers and measure its performance

Prerequisites

Launch an Arm based instance from a cloud service provider running an Ubuntu Linux distribution.

Install gcc on your instance by following the steps in the GNU compiler install guide .

This Learning Path has been tested on AWS and Oracle Cloud platforms.

Install necessary software and packages

Install libevent :

    

        
        
            sudo apt-get update
sudo apt install libevent-dev -y
        
    

Install the necessary packages required by memtier_benchmark:

    

        
        
            sudo apt install build-essential autoconf automake libpcre3-dev libevent-dev pkg-config zlib1g-dev libssl-dev wget git -y
        
    

Install and start memcached

You can install a pre-built memcached with:

    

        
        
            sudo apt install memcached -y
        
    

Start the memcached service with:

    

        
        
            sudo systemctl start memcached
        
    

Install memcached from source on Arm servers

If you prefer to build from source code, use:

    

        
        
            wget https://memcached.org/files/memcached-1.6.19.tar.gz
tar -zxvf memcached-1.6.19.tar.gz
cd memcached-1.6.19
./configure && make && make test && sudo make install
        
    

You can verify the latest available version on the downloads page .

Run memcached on Arm server

When built, start the memcached daemon with:

    

        
        
            /usr/local/bin/memcached start -u memcached -d
        
    

To understand possible options, use the following command:

    

        
        
            /usr/local/bin/memcached -h
        
    

Build memtier_benchmark

memtier_benchmark is a command line utility developed by Redis Labs for load generation and bechmarking NoSQL key-value databases. You will use this to benchmark the performance of memcached.

    

        
        
            git clone https://github.com/RedisLabs/memtier_benchmark
cd memtier_benchmark
autoreconf -ivf
./configure
make
sudo make install
        
    

Measure memcached performance by running memtier_benchmark

Run the benchmark with a command such as:

    

        
        
            memtier_benchmark -s localhost -p 11211 --protocol=memcache_text --clients=100 --threads=5 --ratio=1:1 --key-pattern=R:R --key-minimum=16 --key-maximum=16 --data-size=128 --requests=10000 --run-count=20
        
    

This will take a few minutes to complete.

To understand what each of the command line options do, see the help output:

    

        
        
            memtier_benchmark --help
        
    

View Results

At the end of the benchmark run, the aggregated performance results are printed on the console.

The output will be similar to:

    

        
        AGGREGATED AVERAGE RESULTS (20 runs)
============================================================================================================================
Type         Ops/sec     Hits/sec   Misses/sec    Avg. Latency     p50 Latency     p99 Latency   p99.9 Latency       KB/sec
----------------------------------------------------------------------------------------------------------------------------
Sets       187514.94          ---          ---         1.33816         1.12700         2.84700         7.42300     29665.45
Gets       187514.94    187514.94         0.00         1.33374         1.12700         2.83100         7.39100     32046.01
Waits           0.00          ---          ---             ---             ---             ---             ---          ---
Totals     375029.89    187514.94         0.00         1.33595         1.12700         2.84700         7.42300     61711.46

        
    
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