Common memory performance testing tools include Stream and Sysbench.

1. Using dd for Simple Memory Read/Write Speed Test

The dd command, available by default on Linux systems, can be used to perform a simple memory performance test:

$ dd if=/dev/zero of=/dev/null bs=4096 count=1048576
1048576+0 records in
1048576+0 records out
4294967296 bytes (4.3 GB) copied, 2.69363 s, 1.6 GB/s

This measures the speed of data copying, providing a basic comparison of system memory performance.

2. Stream for Memory Performance Testing

2.1 Installation

$ mkdir mem_test
$ cd mem_test
$ wget https://www.cs.virginia.edu/stream/FTP/Code/stream.c
# Or clone from a domestic source
$ git clone https://gitee.com/lldhsds/stream.git
$ cd stream/
$ gcc stream.c -O3 -fopenmp -DSTREAM_ARRAY_SIZE=1024*1024*1024 -DNTIMES=20 -mcmodel=medium -o mem_test_exec

Compilation flags explanation:

• -O3: Optimization level for the compiler.
• -fopenmp: Enables OpenMP for multi-processor environments.
• -DSTREAM_ARRAY_SIZE: Sets the size of arrays a[], b[], c[].
• -mcmodel=medium: Required when single Memory Array Size exceeds 2GB.

2.2 Execution

$ ./mem_test_exec
-------------------------------------------------------------
STREAM version $Revision: 5.10 $
-------------------------------------------------------------
This system uses 8 bytes per array element.
-------------------------------------------------------------
Array size = 104857600 (elements), Offset = 0 (elements)
Memory per array = 800.0 MiB (= 0.8 GiB).
Total memory required = 2400.0 MiB (= 2.3 GiB).
Each kernel will be executed 20 times.
 The *best* time for each kernel (excluding the first iteration)
 will be used to compute the reported bandwidth.
-------------------------------------------------------------
Number of Threads requested = 4
Number of Threads counted = 4
-------------------------------------------------------------
Your clock granularity/precision appears to be 1 microseconds.
Each test below will take on the order of 29659 microseconds.
   (= 29659 clock ticks)
Increase the size of the arrays if this shows that
you are not getting at least 20 clock ticks per test.
-------------------------------------------------------------
WARNING -- The above is only a rough guideline.
For best results, please be sure you know the
precision of your system timer.
-------------------------------------------------------------
Function    Best Rate MB/s  Avg time     Min time     Max time
Copy:           34701.7     0.066024     0.048347     0.084770
Scale:          39939.1     0.056470     0.042007     0.070259
Add:            41795.4     0.079521     0.060212     0.102223
Triad:          41073.6     0.079864     0.061270     0.102483
-------------------------------------------------------------
Solution Validates: avg error less than 1.000000e-13 on all three arrays
-------------------------------------------------------------

2.3 Result Analysis

Record COPY, SCALE, ADD, TRIAD values from test results. Average multiple runs for comparative analysis across different machines.

3. Sysbench for Memory Performance Testing

3.1 Installation

3.1.1 Package Manager Installation

# CentOS
sudo yum -y install sysbench
# Ubuntu
sudo apt -y install sysbench

3.1.2 Source Code Compilation

$ sudo git clone https://github.com/akopytov/sysbench.git
$ cd sysbench/
$ sudo ./autogen.sh
$ sudo ./configure --without-mysql
$ sudo make && sudo make install

3.2 Execution

$ sysbench memory --threads=4 --time=60 --report-interval=1 --memory-block-size=8K --memory-total-size=100G --memory-oper=read --memory-access-mode=seq run

3.3 Result Analysis

Note the average read/write speeds. Adjust parameters, run multiple tests, and average the results.

4. Memtester for Memory Correctness Testing

$ wget https://pyropus.ca./software/memtester/old-versions/memtester-4.6.0.tar.gz
$ tar xf memtester-4.6.0.tar.gz
$ cd memtester-4.6.0/
$ sudo make && sudo make install
$ sudo memtester 1G 3

5. Mbw for Memory Performence Testing

$ sudo apt install -y mbw
# Or compile from source
$ sudo git clone https://github.com/raas/mbw.git
$ cd mbw
$ sudo make
$ ./mbw -q -n 10 256