disk_benchmark

disk_benchmark is a tool for measuring disk I/O performance (read/write speeds) using different access methods:: read/write, fstrean and mmap.

License

MIT License

Usage

disk_benchmark [options] Options:

-min=<size[KMG]>, --min=<size[KMG]> Minimum file size (default: 1M)

-max=<size[KMG]>, --max=<size[KMG]> Maximum file size (default: 10M)

-s=<size[KMG]>, --s=<size[KMG]> Stride size (default: 1M)

-buf=<size[KMG]>, --buf=<size[KMG]> Memory buffer size (default: 1M)

-f=<[rw|prw|mm|fs]>, --f=<[rw|prw|mm|fs]> Functions for file operation:

rw - read/write prw - pread/pwrite mm - mmap fs - fstream

-n=<N>, --n=<N> Number of iterations (default: 1)

-r, --r Use RAM disk (default: not used)

-p, --plot Enable plotting graph (default: off)

-h, --help Show the help message and exit;

Building

1. Download the matplotlib-cpp header-only library:

git clone https://github.com/lava/matplotlib-cpp.git

Copy files external/matplotlib-cpp

2. install Python3 and Matplotlib on macOS:

brew install cmake python3
brew install python-matplotlib

3. Check your Python 3 path: which python3

Update the CMakeLists.txt if needed, e.g., set Python path to /usr/local/bin/python3 on Intel Macs.

4. Build the project:

mkdir build && cd build
cmake ..
make

Example

./disk_benchmark -min=1G -max=16G -buf=10M -s=1G -f=rw -p

Results on MacBook Pro 2017, 16GB (for example):

read/write

Configuration:
  Functoins:     read/write
  Min      1073741824 B (1.00 GiB)
  Max      17179869184 B (16.00 GiB)
  Stride   1073741824 B (1.00 GiB)
  Memory buffer: 10485760 B (10.00 MiB)
  Iterations:    1
  Use RAM disk:  no
  Plot graph:    yes

Size, MiB	Write, MiB/s	Read, MiB/s
1024	1758.43	2362.75
2048	1947.59	2438.31
3072	1814.49	2178.71
4096	1833.2	2033.92
5120	1834.51	2345.16
6144	1936.13	2340.43
7168	1963.89	2502.35
8192	1921.15	2382.98
9216	1901.79	2286.33
10240	1970.19	2381.83
11264	1949.51	2360.25
12288	1933.74	2326.57
13312	1965.66	2338.93
14336	1954.56	2298.68
15360	1901.43	2416.54
16384	1954.62	2549.4

read/write

pread/pwrite

Size, MiB | Write, MiB/s | Read, MiB/s
----------|--------------|------------
1024      | 1931.24      | 2138.58
2048      | 2001.3       | 2332.5
3072      | 1952.66      | 1995.3
4096      | 1930.44      | 2311.21
5120      | 1912.85      | 2424.93
6144      | 1901.61      | 2616.48
7168      | 1946.5       | 2340.02
8192      | 1885.06      | 2460.77
9216      | 1890.52      | 2342.49
10240     | 1904.1       | 2488.88
11264     | 1923.55      | 2440.56
12288     | 1861.45      | 2421.46
13312     | 1915.22      | 2313.24
14336     | 1891.47      | 2423.95
15360     | 1841         | 2314.27
16384     | 1827.47      | 2106.78

pread/pwrite

mmap

Configuration:
  Functoins:     mmap
  Min      1073741824 B (1.00 GiB)
  Max      17179869184 B (16.00 GiB)
  Stride   1073741824 B (1.00 GiB)
  Memory buffer: 10485760 B (10.00 MiB)
  Iterations:    1
  Use RAM disk:  no
  Plot graph:    yes

Size, MiB	Write, MiB/s	Read, MiB/s
1024	443.966	193.353
2048	354.792	157.224
3072	451.45	187.616
4096	439.999	185.591
5120	425.556	182.436
6144	415.764	159.222
7168	425.328	163.922
8192	397.741	158.43
9216	442.341	176.213
10240	477.497	181.745
11264	514.568	170.522
12288	512.677	182.451
13312	492.207	182.341
14336	474.738	181.758
15360	475.178	182.671
16384	493.915	182.241

mmap

fstream

Configuration:
  Functoins:     fstream
  Min      1073741824 B (1.00 GiB)
  Max      17179869184 B (16.00 GiB)
  Stride   1073741824 B (1.00 GiB)
  Memory buffer: 10485760 B (10.00 MiB)
  Iterations:    1
  Use RAM disk:  no
  Plot graph:    yes

Size, MiB	Write, MiB/s	Read, MiB/s
1024 MB	579.929	286.428
2048 MB	535.381	280.634
3072 MB	255.521	272.476
4096 MB	213.205	276.312
5120 MB	254.752	275.207
6144 MB	181.104	274.81
7168 MB	189.973	260.749
8192 MB	143.673	91.0297
9216 MB	158.887	91.1805
10240 MB	167.723	18.4179
11264 MB	137.364	87.0464
12288 MB	146.27	90.5788
13312 MB	168.546	88.3054
14336 MB	157.363	91.3575
15360 MB	151.211	88.7708
16384 MB	164.617	91.33

fstream