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    SubjectRe: Major network performance regression in 3.7
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    On Sun, 2013-01-06 at 20:34 +0100, Willy Tarreau wrote:

    > OK it works like a charm here now ! I can't break it anymore, so it
    > looks like you finally got it !
    >
    > I noticed that the data rate was higher when the loopback's MTU
    > is exactly a multiple of 4096 (making the 64k choice optimal)
    > while I would have assumed that in order to efficiently splice
    > TCP segments, we'd need to have some space for IP/TCP headers
    > and n*4k for the payload.
    >
    > I also got the transfer freezes again a few times when starting
    > tcpdump on the server, but this is not 100% reproducible I'm afraid.
    > So I'll bring this back when I manage to get some analysable pattern.
    >
    > The spliced transfer through all the chain haproxy works fine again
    > at 10gig with your fix. The issue is closed for me. Feel free to add
    > my Tested-By if you want.
    >

    Good to know !

    What is the max speed you get now ?




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