[AMD Official Use Only - AMD Internal Distribution Only]

Hi Fengchengwen, 

I will send the v3 patch early next week. 

Thanks & Regards,
Sivaprasad

From: fengchengwen <fengchengwen@huawei.com>
Sent: Friday, October 31, 2025 2:48 PM
To: Tummala, Sivaprasad <Sivaprasad.Tummala@amd.com>; Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>; david.hunt@intel.com <david.hunt@intel.com>; anatoly.burakov@intel.com <anatoly.burakov@intel.com>; Jerin Jacob <jerinj@marvell.com>; radu.nicolau@intel.com <radu.nicolau@intel.com>; Akhil Goyal <gakhil@marvell.com>; cristian.dumitrescu@intel.com <cristian.dumitrescu@intel.com>; Yigit, Ferruh <Ferruh.Yigit@amd.com>; konstantin.ananyev@huawei.com <konstantin.ananyev@huawei.com>; mb@smartsharesystems.com <mb@smartsharesystems.com>
Cc: dev@dpdk.org <dev@dpdk.org>; haijie1@huawei.com <haijie1@huawei.com>; stable@dpdk.org <stable@dpdk.org>; Ande, Venkat Kumar <VenkatKumar.Ande@amd.com>; Dengdui Huang <huangdengdui@huawei.com>
Subject: Re: [EXTERNAL] [PATCH v2] examples/l3fwd: adjust Tx burst size based on Rx burst

Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding.


Hi Sivaprasad,

Are you going to send v3 (add log) version?

There is another patch about adjust burst size [1], if this patch
don't continue, maybe we should restart that one.

[1] https://patchwork.dpdk.org/project/dpdk/patch/20241204020622.977156-1-haijie1@huawei.com/

Thanks

On 10/9/2025 10:32 AM, Tummala, Sivaprasad wrote:
> [AMD Official Use Only - AMD Internal Distribution Only]
>
> Hi Pavan,
>
> Please find my response inline.
>
> ________________________________
> From: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>
> Sent: Tuesday, June 10, 2025 7:59 PM
> To: Tummala, Sivaprasad <Sivaprasad.Tummala@amd.com>; david.hunt@intel.com <david.hunt@intel.com>; anatoly.burakov@intel.com <anatoly.burakov@intel.com>; Jerin Jacob <jerinj@marvell.com>; radu.nicolau@intel.com <radu.nicolau@intel.com>; Akhil Goyal <gakhil@marvell.com>; cristian.dumitrescu@intel.com <cristian.dumitrescu@intel.com>; Yigit, Ferruh <Ferruh.Yigit@amd.com>; konstantin.ananyev@huawei.com <konstantin.ananyev@huawei.com>; mb@smartsharesystems.com <mb@smartsharesystems.com>
> Cc: dev@dpdk.org <dev@dpdk.org>; haijie1@huawei.com <haijie1@huawei.com>; stable@dpdk.org <stable@dpdk.org>; Ande, Venkat Kumar <VenkatKumar.Ande@amd.com>; Dengdui Huang <huangdengdui@huawei.com>
> Subject: Re: [EXTERNAL] [PATCH v2] examples/l3fwd: adjust Tx burst size based on Rx burst
>
> Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding.
>
>
>>> Previously, the TX burst size was fixed at 256, leading to performance
>>> degradation in certain scenarios.
>>>
>>> This patch introduces logic to set the TX burst size to match the
>>> configured RX burst size (--burst option, default 32, max 512)
>>> for better efficiency.
>>>
>>> Fixes: d5c4897ecfb2 ("examples/l3fwd: add option to set Rx burst size")
>>> Cc: haijie1@huawei.com
>>> Cc: stable@dpdk.org
>>>
>>> Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>
>>> Tested-by: Venkat Kumar Ande <VenkatKumar.Ande@amd.com>
>>> Tested-by: Dengdui Huang <huangdengdui@huawei.com>
>
>> It would be good if the selected burst sizes of Rx and Tx are logged.
> ACK
>
>> On CN10K platform we see upto 5% improvement, and upto 30% improvement on CN9K.
>
>> Tested-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
>
>> ---
>> examples/l3fwd/l3fwd.h        |  8 ++------
>> examples/l3fwd/l3fwd_common.h | 11 +++++++----
>> examples/l3fwd/main.c         |  2 ++
>> 3 files changed, 11 insertions(+), 10 deletions(-)
>
>