Thesis Defense: Hare: A Scalable Filesystem for Multikernel OSes

Speaker: Charles Gruenwald , CSAIL

Date: Thursday, April 24, 2014

Time: 10:30 AM to 11:30 AM Note: all times are in the Eastern Time Zone

Public: Yes

Location: 32-G449

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Host: Prof. Frans Kaashoek, Prof. Nickolai Zeldovich, CSAIL

Contact: Charles Gruenwald,

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Reminder Subject: TALK: Thesis Defense: Hare: A Scalable Filesystem for Multikernel OSes

Hare is a new file system for multikernel operating systems running on multicore processors. Hare provides to applications a shared file system, implementing most of the POSIX file system API, without relying on cache-coherent shared memory. Kernels on different cores communicate through messages to file server processes, which maintain file system metadata and provide consistent shared state. Hare partitions the buffer cache among file server processes, and allows application cores to have direct access to these buffers. Hare distributes directory entries across several servers so that processes can perform operations on a shared directory in a scalable manner. Furthermore, Hare allows processes to share file descriptors. These three techniques allow Hare to achieve good scalability and performance for file-system-intensive POSIX applications. Experiments with several applications and microbenchmarks on a 40-core machine show that Hare allows these benchmarks to scale.

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This event is not part of a series.

Created by Charles Gruenwald Email at Monday, April 21, 2014 at 3:49 PM.