>Bottleneck in this ongoing story has been CPU How is CPU the bottleneck if what... | Hacker News

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jsprogrammer on Feb 25, 2015 | parent | context | favorite | on: 10Gbit/s full TX wirespeed smallest packet size on...

>Bottleneck in this ongoing story has been CPU

How is CPU the bottleneck if what can be achieved with 11 CPUs can also be achieved with 1 CPU just by changing the software? If what you say is accurate, then kernel/userspace software is the bottleneck.

wtallis on Feb 25, 2015 [–]

TLB flushes and most other context switch costs are still CPU performance issues even if they're not an instructions-per-second issue.

jsprogrammer on Feb 27, 2015 | [–]

But that's only because the software is performing unnecessary actions/computations, it's not an inherent limitation of the CPU device.

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