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    DateTue, 19 Dec 2006 21:11:24 -0800
    FromStephen Hemminger <>
    SubjectRe: Bug 7596 - Potential performance bottleneck for Linxu TCP
    On Tue, 19 Dec 2006 18:55:25 -0800 (PST)
    David Miller <davem@davemloft.net> wrote:
    
    > From: Herbert Xu <herbert@gondor.apana.org.au>
    > Date: Wed, 20 Dec 2006 10:52:19 +1100
    > 
    > > Stephen Hemminger <shemminger@osdl.org> wrote:
    > > > I noticed this bit of discussion in tcp_recvmsg. It implies that a better
    > > > queuing policy would be good. But it is confusing English (Alexey?) so
    > > > not sure where to start.
    > > 
    > > Actually I think the comment says that the current code isn't the
    > > most elegant but is more efficient.
    > 
    > It's just explaining the hierarchy of queues that need to
    > be purged, and in what order, for correctness.
    > 
    > Alexey added that code when I mentioned to him, right after
    > we added the prequeue, that it was possible process the
    > normal backlog before the prequeue, which is illegal.
    > In fixing that bug, he added the comment we are discussing.
    
    It was the realtime/normal comments that piqued my interest.
    Perhaps we should either tweak process priority or remove
    the comments.
    -
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