A Multifaceted Look at Starlink Performance

This is the artifacts repository of the Web Conference (WWW) 2024 paper: A Multifaceted Look at Starlink Performance

📖 Abstract

In recent years, Low-Earth Orbit (LEO) mega-constellations have emerged as a promising network technology and have ushered in a new era for democratizing Internet access. The Starlink network from SpaceX stands out as the only consumer-facing LEO network with over 2M+ customers and more than 4000 operational satellites. In this paper, we conduct the first-of-its-kind extensive multi-faceted analysis of Starlink network performance leveraging several measurement sources. First, based on 19.2M crowdsourced M-Lab speed test measurements from 34 countries since 2021, we analyze Starlink global performance relative to terrestrial cellular networks. Second, we examine Starlink's ability to support real-time web-based latency and bandwidth-critical applications by analyzing the performance of (i) Zoom video conferencing, and (ii) Luna cloud gaming, comparing it to 5G and terrestrial fiber. Third, we orchestrate targeted measurements from Starlink-enabled RIPE Atlas probes to shed light on the last-mile Starlink access and other factors affecting its performance globally. Finally, we conduct controlled experiments from Starlink dishes in two countries and analyze the impact of globally synchronized "15-second reconfiguration intervals" of the links that cause substantial latency and throughput variations. Our unique analysis provides revealing insights on global Starlink functionality and paints the most comprehensive picture of the LEO network's operation to date.

📝 Reference

@inproceedings{multifacetedStarlink-www24,
	title={{A Multifaceted Look at Starlink Performance}},
  	author={Mohan, Nitinder and Ferguson, Andrew and Cech, Hendrik and Renatin, Prakita Rayyan and Bose, Rohan and Marina, Mahesh and Ott, J{\"o}rg},
	year = {2024}, 
	publisher = {Association for Computing Machinery}, 
	address = {New York, NY, USA}, 
	booktitle = {Proceedings of the Web Conference 2024},
	series = {WWW '24}
}

💾 Dataset

The data necessary for the plots needs to be downloaded before starting and is available at mediaTUM with instructions on how to set it up.

📊 Reproducibility Instructions

All plots were created with Python3.10. We recommend following our instructions to create a virtual Python environment with the package versions that we used.

git clone https://github.com/nitindermohan/multifaceted-starlink-performance.git
cd multifaceted-starlink-performance
python3.10 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt

To plot Figure 16, you need to have unzstd, jq, and sqlite3 available in your $PATH.

The dataset contains both raw data and processed artifacts. To download the data required for plotting, you may use the following command. Please look up the password for rsync access at mediaTUM.

export DATA_PATH="$(pwd)/multifaceted-dataset"
export RSYNC_PASSWORD="TODO: get from mediaTUM"
# You may exclude the large cloud gaming packet and video captures that are not required for recreating our plots
rsync -Pr rsync://[email protected]/m1734703 "$DATA_PATH" --exclude={'*mkv','dump.pcapng','dump_for_ip.pcapng'}

# Unzip the RIPE Atlas measurement artifacts
unzip 'atlas/ripe_atlas_repr/*zip' -d atlas/ripe_atlas_repr

$ tree -L 2 "$DATA_PATH"
/multifaceted-dataset/
.
├── atlas
├── controlled
├── gaming
├── mlab
├── zoom
├── checksums.sha512
└── README.md

All plots can be created with ./plot_all.sh. Make sure to properly configure DATA_PATH and RESULT_PATH.

# Remember that envvar DATA_PATH needs to point to the cloned dataset (see the previous step)
export DATA_PATH="$(pwd)/multifaceted-dataset"
export RESULT_PATH="$(pwd)/results"

# RIPE Atlas plots: Figures 3, 12, 13, 14, 15, 22, 23
jupyter nbconvert --to=html --output-dir="$RESULT_PATH" --execute ripe_atlas_figures/ripe_atlas_repr.ipynb

# MLab plots: Figures 1, 5, 6, 7, 8, 9, 17, 18, 19, 20, 21
jupyter nbconvert --to=html --output-dir="$RESULT_PATH" --execute mlab_figures/mlab_concise.ipynb

# Zoom plots: Figure 10
bash zoom/plot.sh

# Cloud gaming plots: Figure 11
bash gaming/plot.sh

# Controlled experiments: Figure 16
bash controlled/16a/generate_fig_16a.sh   # Generate Figure 16a
bash controlled/16b/generate_fig_16b.sh   # Generate Figure 16b
bash controlled/16c/generate_fig_16c.sh   # Generate Figure 16c