Simple RAM benchmark for Linux.
This is a simple RAM benchmark written in C++. It allows checking approximate RAM speed. The code creates a 1 GiB (1024*1024*1024 bytes) buffer, fills it with zeroes, scans the buffer, and measure the time.
Note: This is only experimental code written to check the RAM speed on Linux. There are probably better tools for memory analysis available like memtest86.
- Unix/Linux OS (can be easily ported to Windows)
- g++ compiler compatible with OpenMP (for multi-threaded variant)
- at least 1 GB free RAM (for buffer)
To execute the benchmark, you only have to meet the requirements and run the below commands:
pip install rambenchmark
rambenchmark
If you prefer to compile and execute the code manually, you can do that by running the following commands:
git clone [email protected]:rsusik/rambenchmark.git
cd rambenchmark/rambenchmark
g++ -O3 -std=c++11 -fopenmp -o rambench ./rambench.cpp
./rambench
The benchmark uses two functions for tests:
- memset()
- memchr()
The benchmark produces below example output:
======================================================================
BENCHMARKING RAM WITH MULTI THREADS
(...please wait...)
4 concurrent threads are supported.
----------------------------------------------------------------------
MEMSET TEST
RESULT of filling 1GiB buffer with zeros.
>>> 0.0654 (s) / 16415.2 (MB/s) <<<
Details
#Threads Time (s) Speed (MB/s)
1 0.0654 (s) 16415.2 (MB/s)
2 0.0663 (s) 16189.3 (MB/s)
3 0.0708 (s) 15161.6 (MB/s)
4 0.0750 (s) 14299.5 (MB/s)
----------------------------------------------------------------------
MEMCHR TEST
RESULT of scanning 1GiB buffer.
>>> 0.0776 (s) / 13820.1 (MB/s) <<<
Details
#Threads Time (s) Speed (MB/s)
1 0.1686 (s) 6365.2 (MB/s)
2 0.0985 (s) 10893.6 (MB/s)
3 0.0874 (s) 12281.8 (MB/s)
4 0.0776 (s) 13820.1 (MB/s)
======================================================================