On Wed, 25 Dec 2024 15:53:02 +0800 Dengdui Huang <huangdeng...@huawei.com> wrote:
> From: Dengdui Huang <huangdeng...@huawei.com> > To: <dev@dpdk.org> > CC: <wathsala.vithan...@arm.com>, <step...@networkplumber.org>, > <liuyongl...@huawei.com>, <fengcheng...@huawei.com>, <haij...@huawei.com>, > <lihuis...@huawei.com> > Subject: [PATCH] examples/l3fwd: optimize packet prefetch > Date: Wed, 25 Dec 2024 15:53:02 +0800 > X-Mailer: git-send-email 2.33.0 > > The prefetch window depending on the hardware platform. The current prefetch > policy may not be applicable to all platforms. In most cases, the number of > packets received by Rx burst is small (64 is used in most performance > reports). > In L3fwd, the maximum value cannot exceed 512. Therefore, prefetching all > packets before processing can achieve better performance. > > Signed-off-by: Dengdui Huang <huangdeng...@huawei.com> > --- I think Vpp had a good description of how to unroll and deal with prefetch. With larger burst sizes you don't want to prefetch the whole burst.
