Re: [Xen-ia64-devel] PATCH: xencomm [2]

[Aron Griffis <aron@xxxxxx>]

Akio Takebe wrote:  [Mon Oct 02 2006, 08:45:22AM EDT]
> The following data is /proc/budddyinfo after starting each daemons.
> 1. buddyinfo of ia64 at the boottime. (dom0_mem=512MB)
> Mon Oct  2 20:42:24 JST 2006
> ---iptables---    Node 0, zone DMA  1  2  1  1  1  1  0  0  0  1  9 
> ---portmap---     Node 0, zone DMA  0  1  1  1  1  0  1  0  1  0  1 
> ---ssh---         Node 0, zone DMA  1  3  9  3  1  1  1  1  0  0  0 
> ---sendmail---    Node 0, zone DMA 19  7  5  1  5  1  0  1  0  0  0 
> ---haldaemon---   Node 0, zone DMA 20 10  5  1  4  0  1  1  0  0  0 

These numbers seem considerably smaller than x86, even from the
start!

> 2. buddyinfo of x86 at the boottime. (dom0_mem=128MB)
> 
> ---iptables---    Node 0, zone DMA 47 11  4  1  0  1  8  4  1  0 11 
> ---portmap---     Node 0, zone DMA  3  2  0  1  0  0  1  0  1  1  9 
> ---ssh---         Node 0, zone DMA 23  3  1  1  1  1  1  3  2  0  3 
> ---sendmail---    Node 0, zone DMA 26  5  4  0  0  0  4  3  3  1  1 
> ---haldaemon---   Node 0, zone DMA 44 14 23 14  2  1  1  0  1  0  0 
> ---before xend--- Node 0, zone DMA 22 25 24 14  2  1  1  0  1  0  0 

x86 should also have a Normal zone (i.e. non-DMA) which probably has
even more available, but doesn't appear in this output.  I'm guessing
that the netbk and blkbk drivers aren't limited to DMA-capable pages.

> I think fragmentations of ia64 is a little quickly.
> But allocate of oder:8 is hard on also x86 at the starting of xend.
> 
> My Xen/IA64 environment have 16 cpus(4 sockets, 8cores, 16threads), 
> and Xen/x86 environment have 2core cpus(1 sockets, 2cores).
> The difference of the fragmentations may be caused by the number of cpus.
> What do you think about it?

My ia64 test machine has only 2 cpus, so I don't think that's the only
factor.  But your data is very interesting, thanks for collecting it!

Regards,
Aron

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