Research paper on live VM migration using pre-copy approach in Xen VMM, achieving service downtimes as low as 60ms while migrating entire OS instances across physical hosts for data center management and load balancing.
Research paper on SoftRate, a wireless bit rate adaptation protocol using confidence information from physical layer via SoftPHY interface to estimate channel bit error rate, achieving higher throughput than frame-level and SNR-based protocols in varying wireless conditions.
This lecture explains low-level OS mechanisms to run processes, handle system calls, and perform context switches. It includes function call stacks, privilege levels (user/kernel), trap instructions, interrupt descriptor tables, and detailed context switching processes in modern CPUs.
This lecture covers file system data structures like inodes, bitmaps, superblock, and blocks. It discusses metadata management, File Allocation Table (FAT), directory structures, free space management, and system calls for file operations, highlighting modern and traditional file system designs.
This lecture reviews the file abstraction as a linear byte array, inode structure, directory organization, and operations like open, read, write, and close. It explains hard links, symbolic links, directory trees, and mounting file systems to organize and manage persistent storage.