analyze-disk-performance

basically I hate using FIO, CrystalDiskMark, etc, lemme write something quick that does everything I want and I understand it all. for now it behaves like a sequential write, doesn't have any other bells or whistles

Usage

python main.py /tmp --mb 10 --time 60
python main.py \\unc --mb 10 --time 60

Arguments

• --time: if not provided, loops infinitely, otherwise terminates if over --time seconds
• --mb: size in megabytes (1024 bytes) to read/write
• --overwrite: replace files repeatedly rather than fill up the drive
  • ex) omitting --time and --overwrite will cause the disk to fill and the program to crash and maybe the operating system to crash. your call.

Improvements

Features

• --mb should be a list so people can iterate through 1kb, 10mb, 100mb, etc.
• path should be a list so people can iterate through drives if they like.
• better reporting or at least table-like or something
• progress bar would be nice
• delete all files after would be nice
• export to log file like fio does, bandwidth, etc.

Bugs

Performance

• the array implementation is causing memory to spike unusustainably
• very small files cause imperceptible time delta, somehow make it more precise?
• the megabytes aren't really correctly sized... might want to go with the buffer fill approach rather than the array fill hope and pray approach