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Re: [Xen-devel] Xen cluster n/w performance (again!)

To: Keir Fraser <keir.fraser@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Xen cluster n/w performance (again!)
From: Diwaker Gupta <diwakergupta@xxxxxxxxx>
Date: Tue, 23 Nov 2004 13:32:59 -0800
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Reply-to: Diwaker Gupta <diwakergupta@xxxxxxxxx>
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> One thing you might want to try is to change a line in the file
> linux-2.6.9-xenU/drivers/xen/netfront/netfront.c.
> From:
> #define RX_MIN_TARGET 8
> To:
> One possibility is that dynamic buffer sizing is dropping some packets
> and causing TCP to crap itself.
> If this improves things then I'll have to be much more careful about
> shrinking the buffers, and/or add a config option to disable the
> resizing completely.
>  -- Keir

My bad.

Sorry about the false alarm everyone, it was a routing issue. With the
correct routing setup, I can see upto 930 Mbps between VMs running on
2 distinct physical machines in the cluster.


Diwaker Gupta

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