From: Olaf Hering <olaf@aepfle.de>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: xen-devel@lists.xen.org
Subject: Re: inaccurate dirty_count from XEN_DOMCTL_SHADOW_OP
Date: Thu, 30 Mar 2017 13:50:40 +0200 [thread overview]
Message-ID: <20170330135040.7fca7b48.olaf@aepfle.de> (raw)
In-Reply-To: <2b4fb138-2d53-1b35-978d-86e9884d38c9@citrix.com>
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Am Thu, 30 Mar 2017 12:40:34 +0100
schrieb Andrew Cooper <andrew.cooper3@citrix.com>:
> On 22/03/17 10:59, Olaf Hering wrote:
> > On Wed, Mar 22, Olaf Hering wrote:
> >
> >> Did the xc_shadow_control API change at some point?
> > ... staging-4.5 works, while staging-4.6 does not.
>
> Can you describe in a little more detail what you are testing?
In the PV domU I run this memdirty tool to touch an amount of pages.
In the dom0 I run logdirty to see how many pages are dirty. With older Xen version the rate of dirty pages is high and constant. With 4.6+ the rate goes down after a while.
If you have trouble with reproducing I will prepare a simple testcase.
Olaf
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prev parent reply other threads:[~2017-03-30 11:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-21 9:50 inaccurate dirty_count from XEN_DOMCTL_SHADOW_OP Olaf Hering
2017-03-22 10:46 ` Olaf Hering
2017-03-22 10:53 ` Andrew Cooper
2017-03-22 10:59 ` Olaf Hering
2017-03-30 11:40 ` Andrew Cooper
2017-03-30 11:50 ` Olaf Hering [this message]
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