Re: [tbench regression fixes]: digging out smelly deadmen.

[Eric Dumazet]

Ilpo Järvinen a écrit :
> On Fri, 31 Oct 2008, Eric Dumazet wrote:
>
> > David Miller a écrit :
> > > From: "Ilpo Järvinen" <ilpo.jarvinen@xxxxxxxxxxx>
> > > Date: Fri, 31 Oct 2008 11:40:16 +0200 (EET)
> > > > > Let me remind that it is just a single process, so no ping-pong 
> > & other
> > > > lock related cache effects should play any significant role here, 
> > no? (I'm
> > > > no expert though :-)).
> > > > Not locks or ping-pongs perhaps, I guess.  So it just sends and
> > > receives over a socket, implementing both ends of the communication
> > > in the same process?
> > > > If hash chain conflicts do happen for those 2 sockets, just 
> > traversing
> > > the chain 2 entries deep could show up.
> >
> > tbench is very sensible to cache line ping-pongs (on SMP machines of 
> > course)
>
> ...Sorry to disappoint you but we were discussion there on my AIM9 
> tcp_test results :-).

Well, before you added AIM9 on this topic, we were focusing on tbench :)

Sorry to disappoint you :)

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