From: Keir Fraser <keir.fraser@eu.citrix.com>
To: Alex Williams <awilliams@iweb.com>,
"Xen-devel@lists.xensource.com" <Xen-devel@lists.xensource.com>
Subject: Re: Possible regression: XEN 4.0.0 total_memory decrease
Date: Thu, 15 Apr 2010 17:33:35 +0100 [thread overview]
Message-ID: <C7ECFE6F.116A2%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <4BC736C7.6080707@iweb.com>
Are the hypervisor and dom0 kernel 64-bit or 32-bit? Xen prints a message
"System RAM: xxx" early during boot. Do these differ significantly for you
between 3.4.2 and 4.0.0?
K.
On 15/04/2010 16:54, "Alex Williams" <awilliams@iweb.com> wrote:
> Hello,
>
> I noticed a significant *decrease* (150MB) in "total_memory" on a host
> build using XEN 4.0.0 with kernel 2.6.18.
>
> Here are the details:
>
> Server = 4096MB RAM
> XEN 3.4.2 + kernel 2.6.18: xm info | grep total_memory = 4084
> XEN 4.0.0 + kernel 2.6.18: xm info | grep total_memory = 3946
>
> The exact same kernel config file was used for both builds. I also made
> sure there is absolutely no difference on the hosts (while the builds
> are created on a different machine).
>
> This seems like a regression, unless someone can provide suggestions on
> how to correct this?
>
> Thanks.
>
next prev parent reply other threads:[~2010-04-15 16:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-15 15:54 Possible regression: XEN 4.0.0 total_memory decrease Alex Williams
2010-04-15 16:33 ` Keir Fraser [this message]
2010-04-15 17:33 ` Alex Williams
2010-04-15 17:42 ` Alex Williams
2010-04-15 18:05 ` Keir Fraser
2010-04-15 18:23 ` Keir Fraser
2010-04-16 7:53 ` Jan Beulich
2010-04-16 17:37 ` Keir Fraser
2010-04-19 7:35 ` Jan Beulich
2010-04-19 7:51 ` Keir Fraser
2010-04-15 18:26 ` Alex Williams
2010-04-15 18:34 ` Keir Fraser
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