On Thursday 23 March 2006 09:31, David S. Miller wrote:

> The key point is to keep the per-socket limits far enough away from
> the global pool limits such that it is not easy for a single entity
> to maliciously put the allocator into conservative mode and penalize
> the legitimate users.

It's probably a lost fight already because many services have legitimate
needs for many sockets and any number for max sockets you pick for 

max socket buffer = main memory for tcp / max sockets

will not fit some workloads.

But normally only a small number of sockets go anywhere near the 
max socket buffer.

The dynamic throttling of send windows that is already implemented looks quite
good to handle it, but perhaps it just needs some tuning to be a bit 
more aggressive.

-Andi

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