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From: Thomas Monjalon <thomas@monjalon.net>
To: Chengwen Feng <fengchengwen@huawei.com>
Cc: stephen@networkplumber.org, dev@dpdk.org,
	Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
Subject: Re: [PATCH v4] examples/l3fwd: dynamic NUMA-aware alloc lcore_conf
Date: Thu, 12 Nov 2026 22:00:53 +0100	[thread overview]
Message-ID: <ePWBbDOaRuCbdpFEqlBxbw@monjalon.net> (raw)
In-Reply-To: <08a81384-6088-4a20-982a-91843b2ac604@yandex.ru>

> > Currently lcore_conf is a global static array. When multiple
> > ports/lcores are distributed across different NUMA nodes, datapath
> > suffers from severe cross-NUMA memory access penalty.
> >
> > On Kunpeng platform, sizeof(struct lcore_conf) reaches 133760 bytes.
> > Such a huge per-lcore structure significantly amplifies cross-NUMA
> > overhead in multi-port multi-NUMA deployment scenarios.
> >
> > This commit refactors lcore_conf to pointer array and implements
> > per-lcore NUMA-aware hugepage allocation, allocating each lcore's
> > configuration on its local socket to eliminate remote memory access.
> >
> > Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> 
> Acked-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>

Applied, thanks.



      reply	other threads:[~2026-11-12 21:01 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-23  3:23 [PATCH] examples/l3fwd: dynamic NUMA-aware alloc lcore_conf Chengwen Feng
2026-06-24  3:23 ` [PATCH v2] " Chengwen Feng
2026-06-24  4:26   ` Stephen Hemminger
2026-06-24  6:05     ` fengchengwen
2026-07-12  0:36   ` Thomas Monjalon
2026-07-15  9:22 ` [PATCH] " Chengwen Feng
2026-10-29  2:54 ` [PATCH v3] " Chengwen Feng
2026-10-29  9:19   ` Konstantin Ananyev
2026-10-29 12:12     ` fengchengwen
2026-10-30 10:52       ` Konstantin Ananyev
2026-10-30 12:59         ` Thomas Monjalon
2026-10-31  1:37           ` fengchengwen
2026-11-01 14:26             ` Thomas Monjalon
2026-11-02  4:13               ` fengchengwen
2026-11-04  2:08                 ` fengchengwen
2026-10-29 12:09 ` [PATCH v4] " Chengwen Feng
2026-10-30 10:48   ` Konstantin Ananyev
2026-11-12 21:00     ` Thomas Monjalon [this message]

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