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Wednesday, October 15 • 4:30pm - 5:20pm
High Performance Storage with blk-mq and scsi-mq - Christoph Hellwig

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This presentation gives an overview over the problems of the existing Linux storage stack to deal with low-latency and high IOPS devices, and explains how these are addressed for future Linux releases. Blk-mq provides a replacement for parts of the Linux block layer and allows drivers to support low-latency I/O, and a high number of I/O operations as well as scale better to large number of CPUs. SCSI is the most important enterprise block storage protocol, and thus enabling the SCSI layer to use blk-mq allows to take advantage of it for a wide range of commercially available storage hardware, especially high performance storage arrays. This presentation will explain the high-level details of the architecture of blk-mq and scsi-mq, show performance comparisons to the previous architecture and will show developers how to take advantage of the new capabilities.


Christoph Hellwig

Christoph Hellwig has been working on Linux Storage and File system projects for 15 years. He works all the way up and down the Storage and File system stack, and runs a business focused on Linux Storage architecture and training.

Wednesday October 15, 2014 4:30pm - 5:20pm CEST
Room 14

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