Optimizing GELI performance - John Mark Gurney

Abstract:

Features, like encryption, need to have minimal overhead for them to be widely adopted. If the performance is to slow, few people will use it. The first iteration of AES-XTS using AES-NI in FreeBSD was not much faster than the software version of it. The talk will describe why the AES-XTS algorithm was slow and what was done to improve it. It will cover topics from intrinsics, adding them to gcc and advantages of using them over assembly to how to use HWPC that are included in most modern processors to evaluate performance to identify performance bottle necks.

Speaker biography:

John-Mark Gurney has been using FreeBSD since 1994 and a committer since 1997. His last 10 years has been spent working in the security industry, at first, nCircle (now TripWire) and then at Cryptography Research. He is now doing independent consulting, looking to continue to improve FreeBSD.

Видео Optimizing GELI performance - John Mark Gurney канала EuroBSDCon