On Tue, Jan 31, 2017 at 04:01:05PM +1100, Gavin Shan wrote:
>On Tue, Jan 31, 2017 at 08:11:39AM +1100, Michael Ellerman wrote:
>>Gavin Shan writes:
>>
>>I'd like to see some test results from multi-node systems.
>>
>>I'd also like to understand what has changed since we
On Tue, Jan 31, 2017 at 04:01:05PM +1100, Gavin Shan wrote:
>On Tue, Jan 31, 2017 at 08:11:39AM +1100, Michael Ellerman wrote:
>>Gavin Shan writes:
>>
>>I'd like to see some test results from multi-node systems.
>>
>>I'd also like to understand what has changed since we
On Tue, Jan 31, 2017 at 03:58:16PM +1100, Anton Blanchard wrote:
>Hi,
>
>
>> Anton, I think the behaviour looks good. Actually, it's not very
>> relevant to the issue addressed by the patch. I will reply to
>> Michael's reply about the reason. There are two nodes in your system
>> and the memory
On Tue, Jan 31, 2017 at 08:11:39AM +1100, Michael Ellerman wrote:
>Gavin Shan writes:
>
>I'd like to see some test results from multi-node systems.
>
>I'd also like to understand what has changed since we changed
>RECLAIM_DISTANCE in the first place, ie. why did it used
Hi,
> Anton, I think the behaviour looks good. Actually, it's not very
> relevant to the issue addressed by the patch. I will reply to
> Michael's reply about the reason. There are two nodes in your system
> and the memory is expected to be allocated from node-0. If node-0
> doesn't have enough
On Mon, Jan 30, 2017 at 12:02:40PM +1100, Anton Blanchard wrote:
>Hi,
>
>> Anton suggested that NUMA distances in powerpc mattered and hurted
>> performance without this setting. We need to validate to see if this
>> is still true. A simple way to start would be benchmarking
>
>The original issue
Gavin Shan writes:
> On Mon, Jan 30, 2017 at 12:02:40PM +1100, Anton Blanchard wrote:
>>> Anton suggested that NUMA distances in powerpc mattered and hurted
>>> performance without this setting. We need to validate to see if this
>>> is still true. A simple way to
On Mon, Jan 30, 2017 at 12:02:40PM +1100, Anton Blanchard wrote:
>> Anton suggested that NUMA distances in powerpc mattered and hurted
>> performance without this setting. We need to validate to see if this
>> is still true. A simple way to start would be benchmarking
>
>The original issue was
Hi,
> Anton suggested that NUMA distances in powerpc mattered and hurted
> performance without this setting. We need to validate to see if this
> is still true. A simple way to start would be benchmarking
The original issue was that we never reclaimed local clean pagecache.
I just tried all
On Wed, Jan 25, 2017 at 03:58:22PM +1100, Gavin Shan wrote:
> On Wed, Jan 25, 2017 at 09:27:44AM +0530, Balbir Singh wrote:
> >On Tue, Jan 24, 2017 at 10:32:28AM +1100, Gavin Shan wrote:
> >> When @node_reclaim_mode ("/proc/sys/vm/zone_reclaim_mode") is enabled,
> >> the nodes in the specified
On Wed, Jan 25, 2017 at 09:27:44AM +0530, Balbir Singh wrote:
>On Tue, Jan 24, 2017 at 10:32:28AM +1100, Gavin Shan wrote:
>> When @node_reclaim_mode ("/proc/sys/vm/zone_reclaim_mode") is enabled,
>> the nodes in the specified distance (< RECLAIM_DISTANCE) to the preferred
>> one will be checked
On Tue, Jan 24, 2017 at 10:32:28AM +1100, Gavin Shan wrote:
> When @node_reclaim_mode ("/proc/sys/vm/zone_reclaim_mode") is enabled,
> the nodes in the specified distance (< RECLAIM_DISTANCE) to the preferred
> one will be checked for page direct reclaim in the fast path, as below
> function call
When @node_reclaim_mode ("/proc/sys/vm/zone_reclaim_mode") is enabled,
the nodes in the specified distance (< RECLAIM_DISTANCE) to the preferred
one will be checked for page direct reclaim in the fast path, as below
function call chain indicates. Currently, RECLAIM_DISTANCE is set to 10,
equal to
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