Hi, all
I want to reduce the checkpoint size of a VM by memory exclusion. I try
to find out all the free pages by reference count at VMM-level, As they declared
that:
/* Page is on a free list: ((count_info & PGC_count_mask) == 0). */
, in struct page_info which is defined in /xen/include/asm-x86/mm.h, but
unfortunately, all the pages in a idle VM accords with this condition. I prints
out the reference count of all memory pages, all of them are equal to or
bigger than 2. Anyone can tell me the reason? and how can I find out the free
pages in a guest OS?
best regards
haikun liu
2009-07-16
发件人： xen-devel-request@lists.xensource.com
发送时间： 2009-06-17 19:45:40
收件人： xen-devel@lists.xensource.com
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主题： Xen-devel Digest, Vol 52, Issue 178
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Today's Topics:
1. Qemu nic rate limit (=?gb2312?B?yfLG9MH6?=)
2. [PATCH] xend: pci: find_parent: should return string rather
than int (Cui, Dexuan)
3. Re: [PATCH] xend: pci: find_parent: should return string
rather than int (Simon Horman)
4. RE: [PATCH] xend: pci: find_parent: should return string
rather than int (Cui, Dexuan)
----------------------------------------------------------------------
Message: 1
Date: Wed, 17 Jun 2009 17:40:35 +0800
From: =?gb2312?B?yfLG9MH6?= <shen.qilong@21vianet.com >
Subject: [Xen-devel] Qemu nic rate limit
To: <xen-devel@lists.xensource.com >
Message-ID: <002801c9ef2f$aa158c10$0138a8c0@freecloud >
Content-Type: text/plain; charset="gb2312"
I want to limit my NIC rate in DomU. I had found some paper and done some
test. Now I can limit NIC rate in DomU which had installed PV driver, but I
can’t limit NIC rate in DomU which had the NIC emulated by qemu.
Can anyone help me to limit the nic (qemu created) rate in domU.
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Message: 2
Date: Wed, 17 Jun 2009 19:02:27 +0800
From: "Cui, Dexuan" <dexuan.cui@intel.com >
Subject: [Xen-devel] [PATCH] xend: pci: find_parent: should return
string rather than int
To: Keir Fraser <keir.fraser@eu.citrix.com >, Simon Horman
<horms@verge.net.au >
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com
>
Message-ID:
<EADF0A36011179459010BDF5142A457501C9E2AFB5@pdsmsx502.ccr.corp.intel.com >
Content-Type: text/plain; charset="gb2312"
Using changeset 19783: 61ec78692b13, device assignment can't work:
e.g., in find_the_uppermost_pci_bridge(),
parent = dev_parent.find_parent()
...
dev_parent = PciDevice(parent),
we can see parent['domain'] is int and in PciDevice's __init__,
int(dev['domain'], 16) would fail:
TypeError: int() can't convert non-string with explicit base
The patch fixes the issue.
Signed-off-by: Dexuan Cui <dexuan.cui@intel.com >
diff -r 61ec78692b13 tools/python/xen/util/pci.py
--- a/tools/python/xen/util/pci.py Wed Jun 17 07:39:27 2009 +0100
+++ b/tools/python/xen/util/pci.py Wed Jun 17 18:35:31 2009 +0800
@@ -547,12 +547,12 @@ class PciDevice:
else:
dev = {}
lst = parent.split(':')
- dev['domain'] = int(lst[0], 16)
- dev['bus'] = int(lst[1], 16)
+ dev['domain'] = '%04x' % int(lst[0], 16)
+ dev['bus'] = '%02x' % int(lst[1], 16)
lst = lst[2]
lst = lst.split('.')
- dev['slot'] = int(lst[0], 16)
- dev['func'] = int(lst[1], 16)
+ dev['slot'] = '%02x' % int(lst[0], 16)
+ dev['func'] = '%x' % int(lst[1], 16)
return dev
except OSError, (errno, strerr):
raise PciDeviceParseError('Can not locate the parent of
%s',
------------------------------
Message: 3
Date: Wed, 17 Jun 2009 21:31:08 +1000
From: Simon Horman <horms@verge.net.au >
Subject: [Xen-devel] Re: [PATCH] xend: pci: find_parent: should return
string rather than int
To: "Cui, Dexuan" <dexuan.cui@intel.com >
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com
>,
Keir Fraser <keir.fraser@eu.citrix.com >
Message-ID: <20090617113102.GA3504@verge.net.au >
Content-Type: text/plain; charset=us-ascii
On Wed, Jun 17, 2009 at 07:02:27PM +0800, Cui, Dexuan
wrote:> Using changeset 19783: 61ec78692b13, device assignment can't work:
> e.g., in find_the_uppermost_pci_bridge(),
> parent = dev_parent.find_parent()
> ...
> dev_parent = PciDevice(parent),
> we can see parent['domain'] is int and in PciDevice's __init__,
int(dev['domain'], 16) would fail:
> TypeError: int() can't convert non-string with explicit base
>
> The patch fixes the issue.
Hi Dexuan,
sorry about that. The fix looks good to me.
Could you tell me a bit about what config/command you
ran to produce this problem? I'd like to add something
to the tests that I run.
Acked-by: Simon Horman <horms@verge.net.au >
>
> diff -r 61ec78692b13 tools/python/xen/util/pci.py
> --- a/tools/python/xen/util/pci.py Wed Jun 17 07:39:27 2009 +0100
> +++ b/tools/python/xen/util/pci.py Wed Jun 17 18:35:31 2009 +0800
> @@ -547,12 +547,12 @@ class PciDevice:
> else:
> dev = {}
> lst = parent.split(':')
> - dev['domain'] = int(lst[0], 16)
> - dev['bus'] = int(lst[1], 16)
> + dev['domain'] = '%04x' % int(lst[0], 16)
> + dev['bus'] = '%02x' % int(lst[1], 16)
> lst = lst[2]
> lst = lst.split('.')
> - dev['slot'] = int(lst[0], 16)
> - dev['func'] = int(lst[1], 16)
> + dev['slot'] = '%02x' % int(lst[0], 16)
> + dev['func'] = '%x' % int(lst[1], 16)
> return dev
> except OSError, (errno, strerr):
> raise PciDeviceParseError('Can not locate the parent of
%s',
------------------------------
Message: 4
Date: Wed, 17 Jun 2009 19:40:47 +0800
From: "Cui, Dexuan" <dexuan.cui@intel.com >
Subject: [Xen-devel] RE: [PATCH] xend: pci: find_parent: should return
string rather than int
To: Simon Horman <horms@verge.net.au >
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com
>,
Keir Fraser <keir.fraser@eu.citrix.com >
Message-ID:
<EADF0A36011179459010BDF5142A457501C9E2AFB7@pdsmsx502.ccr.corp.intel.com >
Content-Type: text/plain; charset="us-ascii"
Hi Simon,
Attached is my host info of 'lspci'.
I pciback.hide 01:00.0 and 00:1b.0 and when I tried to statically assign 01:00.0
to guest, I got the " TypeError: int() can't convert non-string with
explicit base".
Thanks,
-- Dexuan
-----Original Message-----
From: Simon Horman [mailto:horms@verge.net.au]
Sent: 2009?6?17? 19:31
To: Cui, Dexuan
Cc: Keir Fraser; xen-devel@lists.xensource.com
Subject: Re: [PATCH] xend: pci: find_parent: should return string rather than
int
On Wed, Jun 17, 2009 at 07:02:27PM +0800, Cui, Dexuan
wrote:> Using changeset 19783: 61ec78692b13, device assignment can't work:
> e.g., in find_the_uppermost_pci_bridge(),
> parent = dev_parent.find_parent()
> ...
> dev_parent = PciDevice(parent),
> we can see parent['domain'] is int and in PciDevice's __init__,
int(dev['domain'], 16) would fail:
> TypeError: int() can't convert non-string with explicit base
>
> The patch fixes the issue.
Hi Dexuan,
sorry about that. The fix looks good to me.
Could you tell me a bit about what config/command you
ran to produce this problem? I'd like to add something
to the tests that I run.
Acked-by: Simon Horman <horms@verge.net.au >
>
> diff -r 61ec78692b13 tools/python/xen/util/pci.py
> --- a/tools/python/xen/util/pci.py Wed Jun 17 07:39:27 2009 +0100
> +++ b/tools/python/xen/util/pci.py Wed Jun 17 18:35:31 2009 +0800
> @@ -547,12 +547,12 @@ class PciDevice:
> else:
> dev = {}
> lst = parent.split(':')
> - dev['domain'] = int(lst[0], 16)
> - dev['bus'] = int(lst[1], 16)
> + dev['domain'] = '%04x' % int(lst[0], 16)
> + dev['bus'] = '%02x' % int(lst[1], 16)
> lst = lst[2]
> lst = lst.split('.')
> - dev['slot'] = int(lst[0], 16)
> - dev['func'] = int(lst[1], 16)
> + dev['slot'] = '%02x' % int(lst[0], 16)
> + dev['func'] = '%x' % int(lst[1], 16)
> return dev
> except OSError, (errno, strerr):
> raise PciDeviceParseError('Can not locate the parent of
%s',
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