On Fri, Sep 25, 2015 at 12:32:02PM +0200, Vlastimil Babka wrote:
> On 08/24/2015 04:19 AM, Joonsoo Kim wrote:
>
> [...]
>
> >
> > Because we just allow freepage scanner to scan non-movable pageblock
> > in very limited situation, more scanning events happen. But, allowing
> > in very limited
On Fri, Sep 25, 2015 at 12:32:02PM +0200, Vlastimil Babka wrote:
> On 08/24/2015 04:19 AM, Joonsoo Kim wrote:
>
> [...]
>
> >
> > Because we just allow freepage scanner to scan non-movable pageblock
> > in very limited situation, more scanning events happen. But, allowing
> > in very limited
On 08/24/2015 04:19 AM, Joonsoo Kim wrote:
[...]
>
> Because we just allow freepage scanner to scan non-movable pageblock
> in very limited situation, more scanning events happen. But, allowing
> in very limited situation results in a very important benefit that
> memory isn't fragmented more
On 08/24/2015 04:19 AM, Joonsoo Kim wrote:
[...]
>
> Because we just allow freepage scanner to scan non-movable pageblock
> in very limited situation, more scanning events happen. But, allowing
> in very limited situation results in a very important benefit that
> memory isn't fragmented more
Currently, freescanner doesn't scan non-movable pageblock, because if
freepages in non-movable pageblock are exhausted, another movable
pageblock would be used for non-movable allocation and it could cause
fragmentation.
But, we should know that watermark check for compaction doesn't
distinguish
Currently, freescanner doesn't scan non-movable pageblock, because if
freepages in non-movable pageblock are exhausted, another movable
pageblock would be used for non-movable allocation and it could cause
fragmentation.
But, we should know that watermark check for compaction doesn't
distinguish
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