Disk I/O bottlenecks in GitHub Actions
a year ago
- #Performance Optimization
- #Disk I/O
- #CI/CD
- Disk I/O bottlenecks can significantly impact CI pipeline performance and are often overlooked.
- Tools like iostat and fio are useful for monitoring and benchmarking disk performance in CI pipelines.
- GitHub's default ubuntu-22.04 runner provides additional vCPUs but does not enhance disk performance.
- Monitoring disk performance during pipeline execution is crucial for identifying bottlenecks.
- Using iostat to monitor disk saturation during dependency installation can reveal performance issues.
- Cache operations, such as untarring dependencies, can expose disk I/O bottlenecks, especially with many small files.
- Disk throughput and IOPS are key metrics for understanding disk performance limitations.
- Benchmarking with fio helps verify if disk throughput or IOPS limits are being hit.
- Testing workflows on different runners using a matrix strategy can help identify optimal performance configurations.
- Depot Ultra Runner offers ultra-fast disk I/O with RAM disk cache and high-powered CPUs for improved performance.