Rlot

A utility for testing the performance of different RAID arrays of kernel space and user space

Features

• Support for testing any of your mounted block devices
• Support for automatic launch of Mdadm RAID implementation (kernel space)
• Support for SPDK RAID implementations.

TO-DO

1. Add more RAID array implementations such as ZFS and others

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Get started

Installation

git clone https://github.com/PavlushaSource/Rlot.git
cd Rlot

Prerequisites

Source requirements

rye sync
source .venv/bin/activate

MDADM is a utility for testing the performance RAID from kernel space

sudo apt update
sudo apt install mdadm

SPDK RAID arrays for testing the performance of RAID implementations from user space

1. Download and build SPDK_FIO
2. Download SPDK
3. Build SPDK

   python3 -m venv .venv
   source .venv/bin/activate
   scripts/setup.sh
   scripts/pkgdep.sh
   ./configure --with-fio=/path/to/fio/repo --with-uring
   make
   

Usage

All examples of configuration files are located in ./resources

Configuration file

Bdev	Mdadm	SPDK
[global] ioengine=libaio invalidate=1 ramp_time=30 size=128G iodepth = 8 numjobs = 8 runtime = 120 bs = 4K rw = write, read dev = /dev/sdb	[global] ioengine=libaio iodepth = 1 numjobs = 4 rw = write, read, randread, randwrite [raid] dev = /dev/sdb, /dev/sdc, /dev/sdd number_realization = 0	[global] ioengine=spdk_bdev ramp_time=5 rw = write path_to_spdk_repo = /root/spdk [spdk] dev = /dev/sdb, /dev/sdc, /dev/sdd number_realization = 0

Some of them can be omitted, then the parameters will be taken from the file ./resources/default_<name>.ini

Parameters that cannot be skipped

• ioengine
• dev
• number_realization (for every RAID)
• path_to_spdk_repo (for SPDK)

Running

python3 main.py <path_to_conf_file.ini>

Output

After the utility is finished, the out folder will be created in the project root, where iops, lat, clat, slat, bandwidth graphs will be located.

License

This project is licensed under the terms of the GPL-3.0 license. See the LICENSE for more information.