On 11/14/18 3:15 PM, anthony.yzn...@oracle.com wrote:
>
>
> On 11/10/2018 08:44 AM, Andrea Arcangeli wrote:
>> On Sat, Nov 10, 2018 at 01:22:49PM +, Mel Gorman wrote:
>>> On Fri, Nov 09, 2018 at 02:51:50PM -0500, Andrea Arcangeli wrote:
And if you're in the camp that is concerned
On Tue, Nov 20, 2018 at 12:11:22PM +0300, Kirill A. Shutemov wrote:
> On Sat, Nov 10, 2018 at 11:44:12AM -0500, Andrea Arcangeli wrote:
> > I would prefer to add intelligence to detect when COWs after fork
> > should be done at 2m or 4k granularity (in the latter case by
> > splitting the pmd
On Tue, Nov 20, 2018 at 12:11:22PM +0300, Kirill A. Shutemov wrote:
> On Sat, Nov 10, 2018 at 11:44:12AM -0500, Andrea Arcangeli wrote:
> > I would prefer to add intelligence to detect when COWs after fork
> > should be done at 2m or 4k granularity (in the latter case by
> > splitting the pmd
On Sat, Nov 10, 2018 at 11:44:12AM -0500, Andrea Arcangeli wrote:
> I would prefer to add intelligence to detect when COWs after fork
> should be done at 2m or 4k granularity (in the latter case by
> splitting the pmd before the actual COW while leaving the transhuge
> pmd intact in the other mm),
On Sat, Nov 10, 2018 at 11:44:12AM -0500, Andrea Arcangeli wrote:
> I would prefer to add intelligence to detect when COWs after fork
> should be done at 2m or 4k granularity (in the latter case by
> splitting the pmd before the actual COW while leaving the transhuge
> pmd intact in the other mm),
On 11/10/2018 08:44 AM, Andrea Arcangeli wrote:
> On Sat, Nov 10, 2018 at 01:22:49PM +, Mel Gorman wrote:
>> On Fri, Nov 09, 2018 at 02:51:50PM -0500, Andrea Arcangeli wrote:
>>> And if you're in the camp that is concerned about the use of more RAM
>>> or/and about the higher latency of COW
On 11/10/2018 08:44 AM, Andrea Arcangeli wrote:
> On Sat, Nov 10, 2018 at 01:22:49PM +, Mel Gorman wrote:
>> On Fri, Nov 09, 2018 at 02:51:50PM -0500, Andrea Arcangeli wrote:
>>> And if you're in the camp that is concerned about the use of more RAM
>>> or/and about the higher latency of COW
On Sat, Nov 10, 2018 at 01:22:49PM +, Mel Gorman wrote:
> On Fri, Nov 09, 2018 at 02:51:50PM -0500, Andrea Arcangeli wrote:
> > And if you're in the camp that is concerned about the use of more RAM
> > or/and about the higher latency of COW faults, I'm afraid the
> > intermediate solution will
On Sat, Nov 10, 2018 at 01:22:49PM +, Mel Gorman wrote:
> On Fri, Nov 09, 2018 at 02:51:50PM -0500, Andrea Arcangeli wrote:
> > And if you're in the camp that is concerned about the use of more RAM
> > or/and about the higher latency of COW faults, I'm afraid the
> > intermediate solution will
On Fri, Nov 09, 2018 at 02:51:50PM -0500, Andrea Arcangeli wrote:
> On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
> > I haven't yet read the patch in details, but I'm skeptical about the
> > approach in general for few reasons:
> >
> > - PTE page table retracting to replace
On Fri, Nov 09, 2018 at 02:51:50PM -0500, Andrea Arcangeli wrote:
> On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
> > I haven't yet read the patch in details, but I'm skeptical about the
> > approach in general for few reasons:
> >
> > - PTE page table retracting to replace
On Fri, Nov 09, 2018 at 10:34:07AM -0500, Zi Yan wrote:
> On 9 Nov 2018, at 8:11, Mel Gorman wrote:
>
> > On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
> >> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> >>> The basic idea as outlined by Mel Gorman in [2]
On Fri, Nov 09, 2018 at 10:34:07AM -0500, Zi Yan wrote:
> On 9 Nov 2018, at 8:11, Mel Gorman wrote:
>
> > On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
> >> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> >>> The basic idea as outlined by Mel Gorman in [2]
On 11/09/2018 11:51 AM, Andrea Arcangeli wrote:
> Hello,
>
> On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
>> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
>>> The basic idea as outlined by Mel Gorman in [2] is:
>>>
>>> 1) On first fault in a sufficiently
On 11/09/2018 11:51 AM, Andrea Arcangeli wrote:
> Hello,
>
> On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
>> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
>>> The basic idea as outlined by Mel Gorman in [2] is:
>>>
>>> 1) On first fault in a sufficiently
On 11/09/2018 07:34 AM, Zi Yan wrote:
> On 9 Nov 2018, at 8:11, Mel Gorman wrote:
>
>> On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
>>> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
The basic idea as outlined by Mel Gorman in [2] is:
1) On
On 11/09/2018 07:34 AM, Zi Yan wrote:
> On 9 Nov 2018, at 8:11, Mel Gorman wrote:
>
>> On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
>>> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
The basic idea as outlined by Mel Gorman in [2] is:
1) On
On 11/09/2018 04:13 AM, Kirill A. Shutemov wrote:
> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
>> The basic idea as outlined by Mel Gorman in [2] is:
>>
>> 1) On first fault in a sufficiently sized range, allocate a huge page
>>sized and aligned block of base pages.
On 11/09/2018 04:13 AM, Kirill A. Shutemov wrote:
> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
>> The basic idea as outlined by Mel Gorman in [2] is:
>>
>> 1) On first fault in a sufficiently sized range, allocate a huge page
>>sized and aligned block of base pages.
On 11/09/2018 03:07 AM, Mel Gorman wrote:
> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
>> The basic idea as outlined by Mel Gorman in [2] is:
>>
>> 1) On first fault in a sufficiently sized range, allocate a huge page
>>sized and aligned block of base pages. Map the
On 11/09/2018 03:07 AM, Mel Gorman wrote:
> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
>> The basic idea as outlined by Mel Gorman in [2] is:
>>
>> 1) On first fault in a sufficiently sized range, allocate a huge page
>>sized and aligned block of base pages. Map the
Hello,
On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> > The basic idea as outlined by Mel Gorman in [2] is:
> >
> > 1) On first fault in a sufficiently sized range, allocate a huge page
> >sized and
Hello,
On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> > The basic idea as outlined by Mel Gorman in [2] is:
> >
> > 1) On first fault in a sufficiently sized range, allocate a huge page
> >sized and
On 9 Nov 2018, at 8:11, Mel Gorman wrote:
> On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
>> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
>>> The basic idea as outlined by Mel Gorman in [2] is:
>>>
>>> 1) On first fault in a sufficiently sized range,
On 9 Nov 2018, at 8:11, Mel Gorman wrote:
> On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
>> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
>>> The basic idea as outlined by Mel Gorman in [2] is:
>>>
>>> 1) On first fault in a sufficiently sized range,
On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> > The basic idea as outlined by Mel Gorman in [2] is:
> >
> > 1) On first fault in a sufficiently sized range, allocate a huge page
> >sized and aligned
On Fri, Nov 09, 2018 at 03:13:18PM +0300, Kirill A. Shutemov wrote:
> On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> > The basic idea as outlined by Mel Gorman in [2] is:
> >
> > 1) On first fault in a sufficiently sized range, allocate a huge page
> >sized and aligned
On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> The basic idea as outlined by Mel Gorman in [2] is:
>
> 1) On first fault in a sufficiently sized range, allocate a huge page
>sized and aligned block of base pages. Map the base page
>corresponding to the fault address
On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> The basic idea as outlined by Mel Gorman in [2] is:
>
> 1) On first fault in a sufficiently sized range, allocate a huge page
>sized and aligned block of base pages. Map the base page
>corresponding to the fault address
On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> The basic idea as outlined by Mel Gorman in [2] is:
>
> 1) On first fault in a sufficiently sized range, allocate a huge page
>sized and aligned block of base pages. Map the base page
>corresponding to the fault address
On Thu, Nov 08, 2018 at 10:48:58PM -0800, Anthony Yznaga wrote:
> The basic idea as outlined by Mel Gorman in [2] is:
>
> 1) On first fault in a sufficiently sized range, allocate a huge page
>sized and aligned block of base pages. Map the base page
>corresponding to the fault address
When the THP enabled policy is "always", or the mode is "madvise" and a
region is marked as MADV_HUGEPAGE, a hugepage is allocated on a page
fault if the PMD is empty. This yields the best VA translation
performance but increases memory consumption if a significant part of
the huge page is never
When the THP enabled policy is "always", or the mode is "madvise" and a
region is marked as MADV_HUGEPAGE, a hugepage is allocated on a page
fault if the PMD is empty. This yields the best VA translation
performance but increases memory consumption if a significant part of
the huge page is never
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