linux-kernel - Re: [net-next v6 0/9] Add support for per-NAPI config via netlink

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Message-ID: <Z4FmbseFBQT_g1R9@mini-arch>
Date: Fri, 10 Jan 2025 10:26:54 -0800
From: Stanislav Fomichev <stfomichev@...il.com>
To: Joe Damato <jdamato@...tly.com>, Alex Lazar <alazar@...dia.com>,
	"aleksander.lobakin@...el.com" <aleksander.lobakin@...el.com>,
	"almasrymina@...gle.com" <almasrymina@...gle.com>,
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	"bjorn@...osinc.com" <bjorn@...osinc.com>,
	Dan Jurgens <danielj@...dia.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"donald.hunter@...il.com" <donald.hunter@...il.com>,
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	Saeed Mahameed <saeedm@...dia.com>,
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	Tariq Toukan <tariqt@...dia.com>,
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	Gal Pressman <gal@...dia.com>, Nimrod Oren <noren@...dia.com>,
	Dror Tennenbaum <drort@...dia.com>,
	Dragos Tatulea <dtatulea@...dia.com>
Subject: Re: [net-next v6 0/9] Add support for per-NAPI config via netlink

On 01/10, Joe Damato wrote:
> On Mon, Dec 30, 2024 at 09:31:23AM -0500, Joe Damato wrote:
> > On Mon, Dec 23, 2024 at 08:17:08AM +0000, Alex Lazar wrote:
> > > 
> 
> [...]
> 
> > > 
> > > Hi Joe,
> > > 
> > > Thanks for the quick response.
> > > Comments inline, If you need more details or further clarification, 
> > > please let me know.
> > 
> > As mentioned above and in my previous emails: please provide lot
> > more detail and make it as easy as possible for me to reproduce this
> > issue with the simplest reproducer possible and a much more detailed
> > explanation.
> > 
> > Please note: I will be out of the office until Jan 9 so my responses
> > will be limited until then.
> 
> Just to follow up on this for anyone who missed the other thread,
> Stanislav proposed a patch which _might_ fix the issue being hit
> here.
> 
> Please see [1], try that patch, and report back if that patch fixes
> the issue.
> 
> Thanks.
> 
> [1]: https://lore.kernel.org/netdev/20250109003436.2829560-1-sdf@fomichev.me/

Note that it might help only if xsk is using busy-polling. Not sure
that's the case, it's relatively obscure feature :-)