From: Keir Fraser <keir.fraser@eu.citrix.com>
To: Jan Beulich <JBeulich@novell.com>,
Xiantao Zhang <xiantao.zhang@intel.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [PATCH]x86: Increase the default NR_CPUS to 128.
Date: Wed, 10 Mar 2010 15:27:36 +0000 [thread overview]
Message-ID: <C7BD6AE8.CEA6%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <4B97BCD90200007800033CD4@vpn.id2.novell.com>
On 10/03/2010 14:38, "Jan Beulich" <JBeulich@novell.com> wrote:
>>>> Keir Fraser <keir.fraser@eu.citrix.com> 10.03.10 15:21 >>>
>> It would certainly be nice, but at least we can boot all CPUs and run VMs
>> across them, minus the finer-grained control. Is this halfway default
>> solution for these bigger machines worse than not making an effort at all?
>
> Not sure - with NUMA also defaulting to on, guest creation may fail
> because of the failure to enforce the affinity. Not nice, especially
> since (I think; a general problem of the tools) the error indication is
> rather hard to interpret by someone not knowing the source code.
Hm, I didn't really think of that...
-- Keir
prev parent reply other threads:[~2010-03-10 15:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-09 1:51 [PATCH]x86: Increase the default NR_CPUS to 128 Zhang, Xiantao
2010-03-10 13:29 ` Jan Beulich
2010-03-10 14:21 ` Keir Fraser
2010-03-10 14:38 ` Jan Beulich
2010-03-10 15:27 ` Keir Fraser [this message]
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