On Thu, Apr 02, 2020 at 04:00:05PM +0800, teawater wrote:
>
>
> > 2020年3月31日 22:07,Michael S. Tsirkin 写道:
> >
> > On Tue, Mar 31, 2020 at 04:03:18PM +0200, David Hildenbrand wrote:
> >> On 31.03.20 15:37, Michael S. Tsirkin wrote:
> >>> On Tue, Mar 31, 2020 at 03:32:05PM +0200, David
> 2020年3月31日 22:07,Michael S. Tsirkin 写道:
>
> On Tue, Mar 31, 2020 at 04:03:18PM +0200, David Hildenbrand wrote:
>> On 31.03.20 15:37, Michael S. Tsirkin wrote:
>>> On Tue, Mar 31, 2020 at 03:32:05PM +0200, David Hildenbrand wrote:
On 31.03.20 15:24, Michael S. Tsirkin wrote:
> On
> 2020年4月1日 17:48,David Hildenbrand 写道:
>
> On 31.03.20 18:37, Nadav Amit wrote:
>>> On Mar 31, 2020, at 7:09 AM, David Hildenbrand wrote:
>>>
>>> On 31.03.20 16:07, Michael S. Tsirkin wrote:
On Tue, Mar 31, 2020 at 04:03:18PM +0200, David Hildenbrand wrote:
> On 31.03.20 15:37,
On 31.03.20 18:27, Nadav Amit wrote:
>> On Mar 31, 2020, at 6:32 AM, David Hildenbrand wrote:
>>
>> On 31.03.20 15:24, Michael S. Tsirkin wrote:
>>> On Tue, Mar 31, 2020 at 12:35:24PM +0200, David Hildenbrand wrote:
On 26.03.20 10:49, Michael S. Tsirkin wrote:
> On Thu, Mar 26, 2020 at
On 31.03.20 18:37, Nadav Amit wrote:
>> On Mar 31, 2020, at 7:09 AM, David Hildenbrand wrote:
>>
>> On 31.03.20 16:07, Michael S. Tsirkin wrote:
>>> On Tue, Mar 31, 2020 at 04:03:18PM +0200, David Hildenbrand wrote:
On 31.03.20 15:37, Michael S. Tsirkin wrote:
> On Tue, Mar 31, 2020 at
> On Mar 31, 2020, at 7:09 AM, David Hildenbrand wrote:
>
> On 31.03.20 16:07, Michael S. Tsirkin wrote:
>> On Tue, Mar 31, 2020 at 04:03:18PM +0200, David Hildenbrand wrote:
>>> On 31.03.20 15:37, Michael S. Tsirkin wrote:
On Tue, Mar 31, 2020 at 03:32:05PM +0200, David Hildenbrand wrote:
> On Mar 31, 2020, at 6:32 AM, David Hildenbrand wrote:
>
> On 31.03.20 15:24, Michael S. Tsirkin wrote:
>> On Tue, Mar 31, 2020 at 12:35:24PM +0200, David Hildenbrand wrote:
>>> On 26.03.20 10:49, Michael S. Tsirkin wrote:
On Thu, Mar 26, 2020 at 08:54:04AM +0100, David Hildenbrand wrote:
On Tue, Mar 31, 2020 at 04:34:48PM +0200, David Hildenbrand wrote:
> On 31.03.20 16:29, David Hildenbrand wrote:
> > On 31.03.20 16:18, Michael S. Tsirkin wrote:
> >> On Tue, Mar 31, 2020 at 04:09:59PM +0200, David Hildenbrand wrote:
> >>
> >> ...
> >>
> >> So if we want to address
On 31.03.20 16:29, David Hildenbrand wrote:
> On 31.03.20 16:18, Michael S. Tsirkin wrote:
>> On Tue, Mar 31, 2020 at 04:09:59PM +0200, David Hildenbrand wrote:
>>
>> ...
>>
>> So if we want to address this, IMHO this calls for a new API.
>> Along the lines of
On 31.03.20 16:18, Michael S. Tsirkin wrote:
> On Tue, Mar 31, 2020 at 04:09:59PM +0200, David Hildenbrand wrote:
>
> ...
>
> So if we want to address this, IMHO this calls for a new API.
> Along the lines of
>
>struct page
On Tue, Mar 31, 2020 at 04:09:59PM +0200, David Hildenbrand wrote:
...
> >>> So if we want to address this, IMHO this calls for a new API.
> >>> Along the lines of
> >>>
> >>>struct page *alloc_page_range(gfp_t gfp, unsigned int
> >>> min_order,
>
On 31.03.20 16:07, Michael S. Tsirkin wrote:
> On Tue, Mar 31, 2020 at 04:03:18PM +0200, David Hildenbrand wrote:
>> On 31.03.20 15:37, Michael S. Tsirkin wrote:
>>> On Tue, Mar 31, 2020 at 03:32:05PM +0200, David Hildenbrand wrote:
On 31.03.20 15:24, Michael S. Tsirkin wrote:
> On Tue,
On Tue, Mar 31, 2020 at 04:03:18PM +0200, David Hildenbrand wrote:
> On 31.03.20 15:37, Michael S. Tsirkin wrote:
> > On Tue, Mar 31, 2020 at 03:32:05PM +0200, David Hildenbrand wrote:
> >> On 31.03.20 15:24, Michael S. Tsirkin wrote:
> >>> On Tue, Mar 31, 2020 at 12:35:24PM +0200, David
On 31.03.20 15:37, Michael S. Tsirkin wrote:
> On Tue, Mar 31, 2020 at 03:32:05PM +0200, David Hildenbrand wrote:
>> On 31.03.20 15:24, Michael S. Tsirkin wrote:
>>> On Tue, Mar 31, 2020 at 12:35:24PM +0200, David Hildenbrand wrote:
On 26.03.20 10:49, Michael S. Tsirkin wrote:
> On Thu,
On 31.03.20 15:24, Michael S. Tsirkin wrote:
> On Tue, Mar 31, 2020 at 12:35:24PM +0200, David Hildenbrand wrote:
>> On 26.03.20 10:49, Michael S. Tsirkin wrote:
>>> On Thu, Mar 26, 2020 at 08:54:04AM +0100, David Hildenbrand wrote:
> Am 26.03.2020 um 08:21 schrieb Michael S. Tsirkin
On Tue, Mar 31, 2020 at 03:32:05PM +0200, David Hildenbrand wrote:
> On 31.03.20 15:24, Michael S. Tsirkin wrote:
> > On Tue, Mar 31, 2020 at 12:35:24PM +0200, David Hildenbrand wrote:
> >> On 26.03.20 10:49, Michael S. Tsirkin wrote:
> >>> On Thu, Mar 26, 2020 at 08:54:04AM +0100, David
On Tue, Mar 31, 2020 at 12:35:24PM +0200, David Hildenbrand wrote:
> On 26.03.20 10:49, Michael S. Tsirkin wrote:
> > On Thu, Mar 26, 2020 at 08:54:04AM +0100, David Hildenbrand wrote:
> >>
> >>
> >>> Am 26.03.2020 um 08:21 schrieb Michael S. Tsirkin :
> >>>
> >>> On Thu, Mar 12, 2020 at
On 26.03.20 10:49, Michael S. Tsirkin wrote:
> On Thu, Mar 26, 2020 at 08:54:04AM +0100, David Hildenbrand wrote:
>>
>>
>>> Am 26.03.2020 um 08:21 schrieb Michael S. Tsirkin :
>>>
>>> On Thu, Mar 12, 2020 at 09:51:25AM +0100, David Hildenbrand wrote:
> On 12.03.20 09:47, Michael S. Tsirkin
On Thu, Mar 26, 2020 at 08:54:04AM +0100, David Hildenbrand wrote:
>
>
> > Am 26.03.2020 um 08:21 schrieb Michael S. Tsirkin :
> >
> > On Thu, Mar 12, 2020 at 09:51:25AM +0100, David Hildenbrand wrote:
> >>> On 12.03.20 09:47, Michael S. Tsirkin wrote:
> >>> On Thu, Mar 12, 2020 at 09:37:32AM
> Am 26.03.2020 um 08:21 schrieb Michael S. Tsirkin :
>
> On Thu, Mar 12, 2020 at 09:51:25AM +0100, David Hildenbrand wrote:
>>> On 12.03.20 09:47, Michael S. Tsirkin wrote:
>>> On Thu, Mar 12, 2020 at 09:37:32AM +0100, David Hildenbrand wrote:
2. You are essentially stealing THPs in the
On Thu, Mar 12, 2020 at 09:51:25AM +0100, David Hildenbrand wrote:
> On 12.03.20 09:47, Michael S. Tsirkin wrote:
> > On Thu, Mar 12, 2020 at 09:37:32AM +0100, David Hildenbrand wrote:
> >> 2. You are essentially stealing THPs in the guest. So the fastest
> >> mapping (THP in guest and host) is
On Thu, Mar 12, 2020 at 09:51:25AM +0100, David Hildenbrand wrote:
> On 12.03.20 09:47, Michael S. Tsirkin wrote:
> > On Thu, Mar 12, 2020 at 09:37:32AM +0100, David Hildenbrand wrote:
> >> 2. You are essentially stealing THPs in the guest. So the fastest
> >> mapping (THP in guest and host) is
On 12.03.20 09:47, Michael S. Tsirkin wrote:
> On Thu, Mar 12, 2020 at 09:37:32AM +0100, David Hildenbrand wrote:
>> 2. You are essentially stealing THPs in the guest. So the fastest
>> mapping (THP in guest and host) is gone. The guest won't be able to make
>> use of THP where it previously was
On Thu, Mar 12, 2020 at 09:37:32AM +0100, David Hildenbrand wrote:
> 2. You are essentially stealing THPs in the guest. So the fastest
> mapping (THP in guest and host) is gone. The guest won't be able to make
> use of THP where it previously was able to. I can imagine this implies a
> performance
On 12.03.20 08:49, Hui Zhu wrote:
> If the guest kernel has many fragmentation pages, use virtio_balloon
> will split THP of QEMU when it calls MADV_DONTNEED madvise to release
> the balloon pages.
> This is an example in a VM with 1G memory 1CPU:
> cat /proc/meminfo | grep AnonHugePages:
>
On Thu, Mar 12, 2020 at 03:49:54PM +0800, Hui Zhu wrote:
> If the guest kernel has many fragmentation pages, use virtio_balloon
> will split THP of QEMU when it calls MADV_DONTNEED madvise to release
> the balloon pages.
> This is an example in a VM with 1G memory 1CPU:
> cat /proc/meminfo | grep
If the guest kernel has many fragmentation pages, use virtio_balloon
will split THP of QEMU when it calls MADV_DONTNEED madvise to release
the balloon pages.
This is an example in a VM with 1G memory 1CPU:
cat /proc/meminfo | grep AnonHugePages:
AnonHugePages: 0 kB
usemem --punch-holes -s
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