On 07/12/2016 02:57 PM, Tejun Heo wrote:
Hello,
On Tue, Jul 12, 2016 at 02:51:31PM -0400, Waiman Long wrote:
The last 2 RFC patches were created in response to Andi's comment to have
coarser granularity than per-cpu. In this particular use case, I don't think
global list traversals are
On 07/12/2016 02:57 PM, Tejun Heo wrote:
Hello,
On Tue, Jul 12, 2016 at 02:51:31PM -0400, Waiman Long wrote:
The last 2 RFC patches were created in response to Andi's comment to have
coarser granularity than per-cpu. In this particular use case, I don't think
global list traversals are
Hello,
On Tue, Jul 12, 2016 at 02:51:31PM -0400, Waiman Long wrote:
> The last 2 RFC patches were created in response to Andi's comment to have
> coarser granularity than per-cpu. In this particular use case, I don't think
> global list traversals are frequent enough to really have any noticeable
Hello,
On Tue, Jul 12, 2016 at 02:51:31PM -0400, Waiman Long wrote:
> The last 2 RFC patches were created in response to Andi's comment to have
> coarser granularity than per-cpu. In this particular use case, I don't think
> global list traversals are frequent enough to really have any noticeable
On 07/12/2016 10:27 AM, Tejun Heo wrote:
Hello,
On Mon, Jul 11, 2016 at 01:32:11PM -0400, Waiman Long wrote:
The percpu APIs are extensively used in the Linux kernel to reduce
cacheline contention and improve performance. For some use cases, the
percpu APIs may be too fine-grain for
On 07/12/2016 10:27 AM, Tejun Heo wrote:
Hello,
On Mon, Jul 11, 2016 at 01:32:11PM -0400, Waiman Long wrote:
The percpu APIs are extensively used in the Linux kernel to reduce
cacheline contention and improve performance. For some use cases, the
percpu APIs may be too fine-grain for
On 07/11/2016 11:14 PM, Boqun Feng wrote:
On Mon, Jul 11, 2016 at 01:32:11PM -0400, Waiman Long wrote:
+/*
+ * Initialize the subnodes
+ *
+ * All the sibling CPUs will be in the same subnode. On top of that, we will
+ * put at most 2 sibling groups into the same subnode. The percpu
+ *
On 07/11/2016 11:14 PM, Boqun Feng wrote:
On Mon, Jul 11, 2016 at 01:32:11PM -0400, Waiman Long wrote:
+/*
+ * Initialize the subnodes
+ *
+ * All the sibling CPUs will be in the same subnode. On top of that, we will
+ * put at most 2 sibling groups into the same subnode. The percpu
+ *
Hello,
On Mon, Jul 11, 2016 at 01:32:11PM -0400, Waiman Long wrote:
> The percpu APIs are extensively used in the Linux kernel to reduce
> cacheline contention and improve performance. For some use cases, the
> percpu APIs may be too fine-grain for distributed resources whereas
> a per-node based
Hello,
On Mon, Jul 11, 2016 at 01:32:11PM -0400, Waiman Long wrote:
> The percpu APIs are extensively used in the Linux kernel to reduce
> cacheline contention and improve performance. For some use cases, the
> percpu APIs may be too fine-grain for distributed resources whereas
> a per-node based
On Mon, Jul 11, 2016 at 01:32:11PM -0400, Waiman Long wrote:
> The percpu APIs are extensively used in the Linux kernel to reduce
> cacheline contention and improve performance. For some use cases, the
> percpu APIs may be too fine-grain for distributed resources whereas
> a per-node based
On Mon, Jul 11, 2016 at 01:32:11PM -0400, Waiman Long wrote:
> The percpu APIs are extensively used in the Linux kernel to reduce
> cacheline contention and improve performance. For some use cases, the
> percpu APIs may be too fine-grain for distributed resources whereas
> a per-node based
The percpu APIs are extensively used in the Linux kernel to reduce
cacheline contention and improve performance. For some use cases, the
percpu APIs may be too fine-grain for distributed resources whereas
a per-node based allocation may be too coarse as we can have dozens
of CPUs in a NUMA node in
The percpu APIs are extensively used in the Linux kernel to reduce
cacheline contention and improve performance. For some use cases, the
percpu APIs may be too fine-grain for distributed resources whereas
a per-node based allocation may be too coarse as we can have dozens
of CPUs in a NUMA node in
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