[montecarl]

This article speaks in broad generalities that seemed to be based on the authors particular interests.

There is no reason why multi-threaded software can't scale near linearly for the right problems.

[robertgraham]

My point was to talk about the wrong problems.

Networking is actually a "right" problem, and should be nearly embarrassingly parallel since two cores and process two unrelated packets at the same time. But, if you look at network stacks on open-source projects, you see a lot of fail. That's the point of my post, as a reference to point to why that spinlock in your networking code is a bad idea, and why it's probably better to replace it with an atomic operation or a lock-free alternative.

[pnathan]

> There is no reason why multi-threaded software can't scale near linearly for the right problems.

For the other problems, you're limited by Amdahl.