[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] alloc_heap_pages is low efficient with more CPUs

On Fri, 12 Oct 2012 20:24:16 +0800
tupeng212 <tupeng212@xxxxxxxxx> wrote:

> With 16 CPUs you find domain startup takes 3s always. 
> :No
> With 16CPUs, first 0.3s, second 3s
> With 64CPUs, first 3s, second 30s.
> With 64 CPUs you find it takes 3s first time, then 30s in future? 
> : Yes


I had seen this a while ago, it was always page scrubbing. That
algoright was changed IIRC, so not sure if still could be the cause.

My 2 cents,

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.