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From: Alekseys Senin <alekseys-smomgflXvOZWk0Htik3J/w@public.gmane.org>
To: Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>
Cc: Jason Gunthorpe
	<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
	linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"ewg-ZwoEplunGu1OwGhvXhtEPSCwEArCW2h5@public.gmane.org"
	<ewg-ZwoEplunGu1OwGhvXhtEPSCwEArCW2h5@public.gmane.org>,
	Moni Shoua <monis-smomgflXvOZWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH] Make multicast and path record queue flexible.
Date: Tue, 12 Oct 2010 18:29:53 +0200	[thread overview]
Message-ID: <1286900993.31931.4.camel@alst60.voltaire.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1010051410370.7065-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>


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On Tue, 2010-10-05 at 14:12 -0500, Christoph Lameter wrote:

> On Tue, 5 Oct 2010, Jason Gunthorpe wrote:
> 
> > On Tue, Oct 05, 2010 at 06:07:37PM +0200, Aleksey Senin wrote:
> > > When using slow SM allow more packets to be buffered before answer
> > > comming back. This patch based on idea of Christoph Lameter.
> > >
> > > http://lists.openfabrics.org/pipermail/general/2009-June/059853.html
> >
> > IMHO, I think it is better to send multicasts to the broadcast MLID than to
> > queue them.. More like ethernet that way.
> 
> I agree. We had similar ideas. However, the kernel does send igmp
> reports to the MC address not to 244.0.0.2. We would have to redirect at
> the IB layer until multicast via MLID becomes functional. We cannot tell
> when that will be the case.
> 
> 


But what if it will not be available from some reason? How long should
we wait? Do we need implement another queue/counter/timeout? 

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  parent reply	other threads:[~2010-10-12 16:29 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-05 16:07 [PATCH] Make multicast and path record queue flexible Aleksey Senin
     [not found] ` <4CAB4D49.9090107-smomgflXvOZWk0Htik3J/w@public.gmane.org>
2010-10-05 16:28   ` Jason Gunthorpe
     [not found]     ` <20101005162833.GC5967-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-10-05 19:12       ` Christoph Lameter
     [not found]         ` <alpine.DEB.2.00.1010051410370.7065-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-10-05 19:54           ` Jason Gunthorpe
     [not found]             ` <20101005195428.GB24268-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-10-05 20:02               ` Christoph Lameter
     [not found]                 ` <alpine.DEB.2.00.1010051500330.8786-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-10-05 20:21                   ` Jason Gunthorpe
     [not found]                     ` <20101005202121.GC24268-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-10-05 20:43                       ` Christoph Lameter
     [not found]                         ` <alpine.DEB.2.00.1010051535480.10603-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-10-05 20:55                           ` Jason Gunthorpe
     [not found]                             ` <20101005205545.GF24268-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-10-05 21:12                               ` Christoph Lameter
     [not found]                                 ` <alpine.DEB.2.00.1010051600190.10603-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-10-05 21:28                                   ` Jason Gunthorpe
     [not found]                                     ` <20101005212826.GG24268-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-10-05 21:34                                       ` Christoph Lameter
2010-10-12 16:29           ` Alekseys Senin [this message]
     [not found]             ` <1286900993.31931.4.camel-uOVkuFIEnOODI2cvxHXf6UEOCMrvLtNR@public.gmane.org>
2010-10-12 20:47               ` Jason Gunthorpe
2010-10-05 19:18   ` Christoph Lameter
     [not found]     ` <alpine.DEB.2.00.1010051415100.7065-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-10-06 15:57       ` Alekseys Senin
     [not found]         ` <1286380676.31487.1.camel-uOVkuFIEnOODI2cvxHXf6UEOCMrvLtNR@public.gmane.org>
2010-10-06 16:16           ` Christoph Lameter
     [not found]             ` <alpine.DEB.2.00.1010061114590.31538-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-10-06 17:34               ` Jason Gunthorpe

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