mbechtel2/memguard

Memory Bandwidth Reservation System for Efficient Performance Isolation in Multi-core Processors

Original repo: https://github.com/heechul/memguard

This repo is an extension of the MemGuard tool that utilizes an additional counter for limiting write intensive applications without ruining the performance of read intensive applications.

An example of it's utilization can be seen in CacheDOS.

Install

# make
# insmod memguard.ko
    <-- Load the module by doing

Usage

Once the module is loaded, the thresholds can be set as follows:

- per-core LLC miss threshold assignment.

assign 500 MB/s for Cores 0,1,2,3
# echo mb 500 500 500 500 > /sys/kernel/debug/memguard/read_limit

- per-core LLC writeback threshold assignment.

assign 100 MB/s for Cores 0,1,2,3
# echo mb 100 100 100 100 > /sys/kernel/debug/memguard/write_limit