From: Mukesh Rathor <mukesh.rathor@oracle.com>
To: tupeng212 <tupeng212@gmail.com>
Cc: Keir Fraser <keir@xen.org>, xen-devel <xen-devel@lists.xen.org>
Subject: Re: alloc_heap_pages is low efficient with more CPUs
Date: Fri, 12 Oct 2012 15:39:25 -0700 [thread overview]
Message-ID: <20121012153925.012846e4@mantra.us.oracle.com> (raw)
In-Reply-To: <201210122024123436447@gmail.com>
On Fri, 12 Oct 2012 20:24:16 +0800
tupeng212 <tupeng212@gmail.com> 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,
thanks
Mukesh
next prev parent reply other threads:[~2012-10-12 22:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-11 15:18 alloc_heap_pages is low efficient with more CPUs tupeng212
2012-10-11 15:41 ` Keir Fraser
2012-10-12 12:24 ` tupeng212
2012-10-12 22:39 ` Mukesh Rathor [this message]
2012-10-13 6:03 ` Keir Fraser
2012-10-13 7:20 ` tupeng212
2012-10-13 8:59 ` Keir Fraser
[not found] <CC9EC91B.41A16%keir.xen@gmail.com>
2012-10-13 6:46 ` tupeng212
2012-10-13 8:59 ` Keir Fraser
2012-10-15 13:27 ` tupeng212
2012-10-15 15:45 ` Keir Fraser
2012-10-16 7:51 ` Jan Beulich
2012-10-16 8:03 ` Keir Fraser
2012-10-16 8:28 ` Jan Beulich
2012-10-16 8:53 ` Keir Fraser
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