Network Stack Challenges at Increasing Speeds The 100Gbs Challenge RedHat 20

Challenge: 100Gbit/s around the corner1/37Network stack challengesat increasing speeds The 100Gbit/s challengeJesper Dangaard Brouer Red Hat inc.Linux Conf Au, New Zealand, January 2015Challenge: 100Gbit/s around the corner2/37Overview● Intro ● Understand 100Gbit/s challenge and time budget ● Measurements: understand the costs in the stack?● Recent accepted changes ● TX bulking, xmit_more and qdisc dequeue bulk● Future work needed ● RX, qdisc, MM-layer● Memory allocator limitations ● Qmempool: L