| Date | Tue, 6 May 2014 10:30:15 -0700 | From | josh@joshtrip ... | Subject | Re: [PATCH 08/24] net, diet: Make TCP metrics optional |
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On Tue, May 06, 2014 at 10:03:24AM -0700, Eric Dumazet wrote: > On Tue, 2014-05-06 at 09:45 -0700, josh@joshtriplett.org wrote: > > > Sounds like we have some optimization to do, then; there's no > > fundamental unfixable reason for that delta. > > I think you have little idea of the reasons for this delta.
I have a rather good idea, actually.
> Some servers handle 10 millions of TCP flows, using as little as 1KB per > connection in user space, all included. > > Do you have an idea of how much memory is needed for 10 millions TCP > sockets in the kernel ?
Too much. That's potentially fixable, but not if we start with the premise that it's impossible.
- Josh Triplett
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