[dpdk-dev] [PATCH] config: increase default maximum number of NUMA nodes
thomas at monjalon.net
Thu Feb 4 11:28:40 CET 2021
04/02/2021 07:19, Jerin Jacob:
> On Thu, Feb 4, 2021 at 2:49 AM Thomas Monjalon <thomas at monjalon.net> wrote:
> > AMD CPU can present a high number of NUMA nodes.
> > The default should be 32 for better compatibility.
> The typical configuration is 4 nodes for AMD. Just wondering, Is it
> an exception case? if so, Do we need to consume more memory for normal
As you can read in
there is an option "CCX as NUMA Domain.
This option exposes each CCX as a NUMA node.
On a system with dual-socket CPUs with 16 CCXs per CPU,
this setting will expose 32 NUMA domains."
"Enabling this option is expected to help virtualized environments."
I would not say it is exceptional.
And in my understanding, the memory cost is not so high for DPDK.
Do you see some large arrays depending on RTE_MAX_NUMA_NODES?
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