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Thursday, September 6 • 11:30am - 12:00pm
Lock-Free Read-Write Concurrency in rte_hash

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Recent patches have tried to address the reader-writer concurrency in rte_hash library. However, these fall short on solving the problem on multiple use cases. These solutions result in further significant problems when the use cases involve preemptible writer threads. Lock-free addition and deletion algorithms are required to truly solve the read-write concurrency. This talk explores the need for lock-free algorithms in the context of rte_hash library, the changes required in rte_hash for 64bit systems. It will also discuss various options available for solving the issue on 32bit systems and seek feedback. Performance numbers with this proposal will also be presented.

avatar for Honnappa Nagarahalli

Honnappa Nagarahalli

Sr Principal Software Engineer, Arm
Honnappa has 19 years of experience in developing applications, platform enablement kits and application development kits meant for high throughput packet processing workloads. He started his career working on IXP2400. He has worked on Octeon and Axxia line of multi-core packet processors... Read More →

Thursday September 6, 2018 11:30am - 12:00pm IST

Attendees (3)