linux-kernel - Re: [PATCH net-next 0/9] Split netmem from struct page

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250612004026.GB41589@system.software.com>
Date: Thu, 12 Jun 2025 09:40:26 +0900
From: Byungchul Park <byungchul@...com>
To: Mina Almasry <almasrymina@...gle.com>
Cc: Pavel Begunkov <asml.silence@...il.com>, willy@...radead.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, kernel_team@...ynix.com, kuba@...nel.org,
	ilias.apalodimas@...aro.org, harry.yoo@...cle.com, hawk@...nel.org,
	akpm@...ux-foundation.org, davem@...emloft.net,
	john.fastabend@...il.com, andrew+netdev@...n.ch, toke@...hat.com,
	tariqt@...dia.com, edumazet@...gle.com, pabeni@...hat.com,
	saeedm@...dia.com, leon@...nel.org, ast@...nel.org,
	daniel@...earbox.net, david@...hat.com, lorenzo.stoakes@...cle.com,
	Liam.Howlett@...cle.com, vbabka@...e.cz, rppt@...nel.org,
	surenb@...gle.com, mhocko@...e.com, horms@...nel.org,
	linux-rdma@...r.kernel.org, bpf@...r.kernel.org,
	vishal.moola@...il.com
Subject: Re: [PATCH net-next 0/9] Split netmem from struct page

On Wed, Jun 11, 2025 at 01:48:36PM -0700, Mina Almasry wrote:
> On Wed, Jun 11, 2025 at 7:24 AM Pavel Begunkov <asml.silence@...il.com> wrote:
> >
> > On 6/9/25 05:32, Byungchul Park wrote:
> > > Hi all,
> > >
> > > In this version, I'm posting non-controversial patches first.  I will
> > > post the rest more carefully later.  In this version, no update has been
> > > applied except excluding some patches from the previous version.  See
> > > the changes below.
> >
> > fwiw, I tried it with net_iov (zcrx), it didn't blow up during a
> > short test.
> >
> 
> FWIW, I ran my devmem TCP tests, and pp benchmark regression tests.
> Both look good to me. For the pp benchmark:

Thanks for the test.

	Byungchul
> 
> Before:
> 
> Fast path results:
> no-softirq-page_pool01 Per elem: 11 cycles(tsc) 4.337 ns
> 
> ptr_ring results:
> no-softirq-page_pool02 Per elem: 529 cycles(tsc) 196.073 ns
> 
> slow path results:
> no-softirq-page_pool03 Per elem: 554 cycles(tsc) 205.195 ns
> 
> After:
> 
> Fast path results:
> no-softirq-page_pool01 Per elem: 11 cycles(tsc) 4.401 ns
> 
> ptr_ring results:
> no-softirq-page_pool02 Per elem: 530 cycles(tsc) 196.443 ns
> 
> slow path results:
> no-softirq-page_pool03 Per elem: 551 cycles(tsc) 204.287 ns
> 
> 
> 
> -- 
> Thanks,
> Mina