From: Chris Lalancette <clalance@redhat.com>
To: "dan.magenheimer@oracle.com" <dan.magenheimer@oracle.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: Issues with multiple differing guest HZ rates?
Date: Sun, 02 Mar 2008 22:14:26 -0500 [thread overview]
Message-ID: <47CB6D12.80908@redhat.com> (raw)
In-Reply-To: <20080302103054078.00000000436@djm-pc>
Dan Magenheimer wrote:
> In a timer patch in RHEL5u1 (by Alan Cox), is the comment:
>
> "Xen itself has issues with multiple differing guest GZ rates"
> (and I assume that GZ is a typo, should be HZ)
>
> Can anyone explain this further or are there experimental
> results to back it up? We are seeing some strangeness with
> running multiple pvm guests with different HZ rates and wonder
> if this is related.
I highly doubt it; in that comment, Alan was describing why he *didn't*
implement the tick divider for Xen kernels. So that patch doesn't
actually touch any Xen code in particular, and should in general not be
touching much code that the -xen kernels share with the bare-metal
kernel either. What's the problem you are seeing with different HZ
rates in guests?
Chris Lalancette
next prev parent reply other threads:[~2008-03-03 3:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-02 17:30 Issues with multiple differing guest HZ rates? Dan Magenheimer
2008-03-03 3:14 ` Chris Lalancette [this message]
2008-03-03 4:03 ` Dan Magenheimer
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