From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Tom Rotenberg <tom.rotenberg@gmail.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
Keir Fraser <keir.fraser@eu.citrix.com>
Subject: Re: Will Xen 4.0 release use the pv-ops kernel despite it's performance hit
Date: Mon, 21 Dec 2009 13:41:46 -0800 [thread overview]
Message-ID: <4B2FEB9A.8010401@goop.org> (raw)
In-Reply-To: <8686c3cd0912202216y33385cb2p62ef12d4807ceabf@mail.gmail.com>
On 12/20/2009 10:16 PM, Tom Rotenberg wrote:
> I just thought i saw Jeremy's mail about changing the APIC logic in
> Xen to conform to the pv-ops kernel, which i thought will cause new
> Xen not to work with old dom0 kernel. This isn't the case?
>
No. Future pvops dom0 kernels will require Xen >= 4.0. Xen 4.0 will
still support older dom0 kernels.
BTW, I haven't measured pvops dom0 performance, but there's no
particular reason to believe there'll be a big hit (the performance hit
I was talking about refers to the overhead of fork/exec-heavy workloads,
which is very unlike dom0's workload).
J
next prev parent reply other threads:[~2009-12-21 21:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-20 17:41 Will Xen 4.0 release use the pv-ops kernel despite it's performance hit Tom Rotenberg
2009-12-20 21:53 ` Keir Fraser
2009-12-21 6:16 ` Tom Rotenberg
2009-12-21 6:39 ` Zhang, Xiantao
2009-12-21 10:55 ` Keir Fraser
2009-12-21 13:30 ` Zhang, Xiantao
2009-12-21 7:01 ` Keir Fraser
2009-12-21 21:41 ` Jeremy Fitzhardinge [this message]
2009-12-21 14:59 ` Konrad Rzeszutek Wilk
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