IO Sources

IO sources derive entropy from storage-stack, bus, and device timing effects.

Sources

• disk_io — block I/O timing variability
• fsync_journal — journal flush path latency jitter
• usb_enumeration — USB device enumeration timing
• nvme_iokit_sensors — NVMe sensor/property polling timing
• nvme_raw_device — raw block-device read timing
• nvme_passthrough_linux — Linux NVMe admin passthrough timing