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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 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 23 Nov 2004 21:37:45 +0000 |
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| Reply-to: | Diwaker Gupta <diwakergupta@xxxxxxxxx> |
| Sender: | xen-devel-admin@xxxxxxxxxxxxxxxxxxxxx |
> 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: > #define RX_MIN_TARGET NETIF_RX_RING_SIZE > > 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. Cheers! -- Diwaker Gupta http://resolute.ucsd.edu/diwaker ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel |
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