Hi Johannes, Michal,
>From page to its lruvec, a few memory access under lock cause extra cost.
Would you like to save the per memcg lruvec pointer to page->private?
Thanks
Alex
在 2020/7/25 下午8:59, Alex Shi 写道:
> /**
> * mem_cgroup_page_lruvec - return lruvec for isolating/putting an LRU pa
rewrite the commit log.
>From 5e9340444632d69cf10c8db521577d0637819c5f Mon Sep 17 00:00:00 2001
From: Alex Shi
Date: Tue, 26 May 2020 17:27:52 +0800
Subject: [PATCH v17 17/23] mm/lru: replace pgdat lru_lock with lruvec lock
This patch moves per node lru_lock into lruvec, thus bring a lru_lock fo
在 2020/7/29 上午9:27, Alexander Duyck 写道:
> On Tue, Jul 28, 2020 at 6:00 PM Alex Shi wrote:
>>
>>
>>
>> 在 2020/7/28 下午10:54, Alexander Duyck 写道:
>>> On Tue, Jul 28, 2020 at 4:20 AM Alex Shi wrote:
在 2020/7/28 上午7:34, Alexander Duyck 写道:
>> @@ -1876,6 +1876,12 @@ static un
On Tue, Jul 28, 2020 at 6:00 PM Alex Shi wrote:
>
>
>
> 在 2020/7/28 下午10:54, Alexander Duyck 写道:
> > On Tue, Jul 28, 2020 at 4:20 AM Alex Shi wrote:
> >>
> >>
> >>
> >> 在 2020/7/28 上午7:34, Alexander Duyck 写道:
> @@ -1876,6 +1876,12 @@ static unsigned noinline_for_stack
> move_pages_to_l
在 2020/7/28 下午10:54, Alexander Duyck 写道:
> On Tue, Jul 28, 2020 at 4:20 AM Alex Shi wrote:
>>
>>
>>
>> 在 2020/7/28 上午7:34, Alexander Duyck 写道:
@@ -1876,6 +1876,12 @@ static unsigned noinline_for_stack
move_pages_to_lru(struct lruvec *lruvec,
*
在 2020/7/28 下午11:55, Alexander Duyck 写道:
>> /*
>> @@ -511,11 +511,11 @@ static bool compact_lock_irqsave(spinlock_t *lock,
>> unsigned long *flags,
>> * scheduled)
>> */
>> static bool compact_unlock_should_abort(spinlock_t *lock,
>> - unsigned long flags, bool *
On Tue, Jul 28, 2020 at 8:40 AM Alex Shi wrote:
>
>
>
> 在 2020/7/28 上午7:34, Alexander Duyck 写道:
> > It might make more sense to look at modifying
> > compact_unlock_should_abort and compact_lock_irqsave (which always
> > returns true so should probably be a void) to address the deficiencies
> > th
在 2020/7/28 上午7:34, Alexander Duyck 写道:
> It might make more sense to look at modifying
> compact_unlock_should_abort and compact_lock_irqsave (which always
> returns true so should probably be a void) to address the deficiencies
> they have that make them unusable for you.
One of possible reus
On Tue, Jul 28, 2020 at 4:20 AM Alex Shi wrote:
>
>
>
> 在 2020/7/28 上午7:34, Alexander Duyck 写道:
> >> @@ -1876,6 +1876,12 @@ static unsigned noinline_for_stack
> >> move_pages_to_lru(struct lruvec *lruvec,
> >> *
> >> list_add(&page->lru,)
>
在 2020/7/28 上午7:34, Alexander Duyck 写道:
>> @@ -1876,6 +1876,12 @@ static unsigned noinline_for_stack
>> move_pages_to_lru(struct lruvec *lruvec,
>> *
>> list_add(&page->lru,)
>> * list_add(&page->lru,) //corrupt
>>
在 2020/7/28 上午7:34, Alexander Duyck 写道:
>> @@ -847,11 +847,21 @@ static bool too_many_isolated(pg_data_t *pgdat)
>> * contention, to give chance to IRQs. Abort completely if
>> * a fatal signal is pending.
>> */
>> - if (!(low_pfn
On Sat, Jul 25, 2020 at 6:01 AM Alex Shi wrote:
>
> This patch moves per node lru_lock into lruvec, thus bring a lru_lock for
> each of memcg per node. So on a large machine, each of memcg don't
> have to suffer from per node pgdat->lru_lock competition. They could go
> fast with their self lru_lo
This patch moves per node lru_lock into lruvec, thus bring a lru_lock for
each of memcg per node. So on a large machine, each of memcg don't
have to suffer from per node pgdat->lru_lock competition. They could go
fast with their self lru_lock.
After move memcg charge before lru inserting, page iso
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