From: Stephen Hemminger <stephen@networkplumber.org>
To: Dengdui Huang <huangdengdui@huawei.com>
Cc: <dev@dpdk.org>, <konstantin.ananyev@huawei.com>,
<wathsala.vithanage@arm.com>, <lihuisong@huawei.com>,
<fengchengwen@huawei.com>, <haijie1@huawei.com>,
<liuyonglong@huawei.com>
Subject: Re: [PATCH] examples/l3fwd: add option to set refetch offset
Date: Fri, 10 Jan 2025 09:20:36 -0800 [thread overview]
Message-ID: <20250110092036.23a762dd@hermes.local> (raw)
In-Reply-To: <20250110093715.4044681-1-huangdengdui@huawei.com>
On Fri, 10 Jan 2025 17:37:15 +0800
Dengdui Huang <huangdengdui@huawei.com> wrote:
> The prefetch window depending on the HW platform. It is difficult to
> measure the prefetch window of a HW platform. Therefore, the prefetch
> offset option is added to change the prefetch window. User can adjust
> the refetch offset to achieve the best prefetch effect.
>
> In addition, this option is used only in the main loop.
>
> Signed-off-by: Dengdui Huang <huangdengdui@huawei.com>
> ---
This will make it slower for many platforms.
GCC will unroll a loop of fixed small size, which is what we want.
next prev parent reply other threads:[~2025-01-10 17:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-25 7:53 [PATCH] examples/l3fwd: optimize packet prefetch Dengdui Huang
2024-12-25 21:21 ` Stephen Hemminger
2025-01-08 13:42 ` Konstantin Ananyev
2025-01-09 11:31 ` huangdengdui
2025-01-10 9:37 ` [PATCH] examples/l3fwd: add option to set refetch offset Dengdui Huang
2025-01-10 17:19 ` Stephen Hemminger
2025-01-14 9:23 ` huangdengdui
2025-01-10 17:20 ` Stephen Hemminger [this message]
2025-01-14 9:22 ` huangdengdui
2025-01-14 16:07 ` Stephen Hemminger
2025-01-14 16:11 ` Stephen Hemminger
2025-02-19 16:44 ` Konstantin Ananyev
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