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

[Diwaker Gupta <diwakergupta@xxxxxxxxx>]

> 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