Re: [PATCH v3 0/5] Defer lcore variables allocation

[fengchengwen <fengchengwen@huawei.com>]

Series-acked-by: Chengwen Feng <fengchengwen@huawei.com>

On 2025/2/11 5:31, David Marchand wrote:
> As I had reported in 24.11-rc2, the lcore variables allocation have a
> noticeable impact on applications consuming DPDK, even when such
> applications does not use DPDK, or use features associated to
> some lcore variables.
> 
> While the amount has been reduced in a rush before rc2,
> there are still cases when the increased memory footprint is noticed
> like in scaling tests.
> See https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/2090931
> 
> 
> lcore variable allocations in constructor is a bad idea, as the
> application consuming DPDK has no control over such allocation:
> linking some code does not mean that all of it will be used at runtime.
> 
> The general question on whether lcore variables in constructor should
> be forbidden, is left to a later discussion.
> 
> For now, this series only focus on fixing subsystems using lcore
> variables so that those allocations are deferred either in rte_eal_init()
> or in the path that does require such lcore variables.
> 
>