RE: dpdk Tx falling short

["Lombardo, Ed" <Ed.Lombardo@netscout.com>]

Hi Stephen,
I saw your response to more mempools and cache behavior.

I have a goal to support 2x100G next, and if I can't get 10G with DPDK then something is seriously wrong.

Should I build the dpdk static libraries with LTO?

Thanks,
Ed

-----Original Message-----
From: Stephen Hemminger <stephen@networkplumber.org> 
Sent: Friday, July 4, 2025 10:50 AM
To: Ivan Malov <ivan.malov@arknetworks.am>
Cc: Lombardo, Ed <Ed.Lombardo@netscout.com>; users <users@dpdk.org>
Subject: Re: dpdk Tx falling short

External Email: This message originated outside of NETSCOUT. Do not click links or open attachments unless you recognize the sender and know the content is safe.

On Fri, 4 Jul 2025 15:44:50 +0400 (+04)
Ivan Malov <ivan.malov@arknetworks.am> wrote:

> Hi Ed,
> 
> You say there is only one mempool. Why?
> Have you tried using dedicated mempools, one per each port pair (0,2), (3,4)?
> 
> Thank you.
> 
> On Thu, 3 Jul 2025, Lombardo, Ed wrote:

More mempools can make cache behavior worse not better.