Re: [Xen-ia64-devel] [PATCH] discontig memory support

[Kouya SHIMURA <kouya@xxxxxxxxxxxxxx>]

Hi Alex,

Excellent!! Thanks for testing P2M/VP kernel. 
That might encourage me in changeover to P2M/VP kernel.
I guess that remarkable performance difference appears in VNIF.
I'm very interested in how much network performance is degraded.

Thanks,
Kouya

Alex Williamson writes:
 >    I couple data points.  When I merge these patches in w/ the P2M/VP
 > patches, as expected dom0 gets a memory map that no longer needs virtual
 > memmap on my system.  Even better, I can enable virtual memmap on a
 > P2M/VP kernel and I don't see the Oops from the loop driver.  I think
 > maybe those of us on systems that need virtual memmap can use the
 > max_addr= boot option to limit the available machine memory until the
 > P2M/VP patches are merged in-tree.  Also, my performance tests show no
 > degradation in either dom0 or domU performance (with the kernel compile
 > benchmark).  Thanks,
 > 
 >      Alex
 > 
 > -- 
 > Alex Williamson                             HP Linux & Open Source Lab



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