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Wednesday, March 11 • 2:00pm - 2:50pm
Increasing SCSI LLD Driver Performance by Using the SCSI Multiqueue Approach - Bart Van Assche, SanDisk

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Using the full potential of all-flash arrays not only requires a high-bandwidth and low-latency communication network but also requires optimized SCSI LLD drivers. The SCSI multiqueue approach that has been merged in Linux kernel 3.17 enables higher performance and lower latency. Levering the full potential of the SCSI multiqueue approach is only possible by integrating support for multiple hardware queues in the SCSI LLD. The SCSI RDMA Protocol (SRP) initiator driver is a SCSI LLD driver that enables access to remote storage over network technologies that support RDMA, e.g. InfiniBand, iWARP and RoCE. During this presentation it will be explained why the recently posted SRP initiator patches resulted in a very significant performance improvement and also how that performance improvement has been realized.


Bart Van Assche

Bart Van Assche obtained a Ph.D. in distributed computing in Belgium and lives in Belgium. He is the maintainer of the SRP initiator driver in the Linux kernel and is also an active contributor to the Linux kernel SCSI core. Bart works for SanDisk on the ION Accelerator software. This software provides SAN functionality that is optimized for flash memory and that has already established several performance world records.

Wednesday March 11, 2015 2:00pm - 2:50pm
Loft 2