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AJvYcCXCwpaiD1SJVRrDYzO/xrL0wPwRMQj5vFZ8wrw0S8hUwpFdsqSSFFU8XUag5YW25DnWRNhwnmBuDw==@kvack.org X-Gm-Message-State: AOJu0YxIBt30+h+VE/I/ghSiwTGiW4cxTKcapCdOdzvx6MGccpG7M+Ms TinfKSml73aJjrnH3IqOdDxBEoqHbI/1fTyV5mbDF84D8Qy4aelinQtR5v9MMclScIecKcdUT0J 4/63EgepcPS8W0XnWQawy+Gx+hT1o2m2ylF0U9pvG X-Gm-Gg: ASbGncvA27KUNI4TsZFFLUeEp+/0JPihQrSSQbQxi80tO7js7tn5vBHNo7JjJ5rhyc8 6aPxYytl4HTYkNkKr6J8xP94gDvjHt2OvZ9YvQYl/8qsfftnCiqTihHaoD8gH17SES932nqSTQp nrrzQQuPuD7Zqu03jbfqD+1YnLVE/wITlpKbGhSlR6V0ZAeuIU/wsVvmnrkZRvoxPUXKn0VtXI X-Google-Smtp-Source: AGHT+IHPOhN+2kRO/ieW+5bXzKNpmLOWrF7VTuuMHfPxMqYhDS9sFU10fG4M5zXkX7CwS4WlSGyc/8tNtPMJ+fMmqfA= X-Received: by 2002:a17:903:2ac3:b0:231:d0ef:e8ff with SMTP id d9443c01a7336-2364dc4e38fmr398195ad.8.1749674929600; Wed, 11 Jun 2025 13:48:49 -0700 (PDT) MIME-Version: 1.0 References: <20250609043225.77229-1-byungchul@sk.com> <8c7c1039-5b9c-4060-8292-87047dfd9845@gmail.com> In-Reply-To: <8c7c1039-5b9c-4060-8292-87047dfd9845@gmail.com> From: Mina Almasry Date: Wed, 11 Jun 2025 13:48:36 -0700 X-Gm-Features: AX0GCFsiObw-5gr4V36jOF5DxyaQMi5Vz9ZSIsC4_vLQ1YuMrAJGB2FI0rG1Qcg Message-ID: Subject: Re: [PATCH net-next 0/9] Split netmem from struct page To: Pavel Begunkov Cc: Byungchul Park , willy@infradead.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel_team@skhynix.com, kuba@kernel.org, ilias.apalodimas@linaro.org, harry.yoo@oracle.com, hawk@kernel.org, akpm@linux-foundation.org, davem@davemloft.net, john.fastabend@gmail.com, andrew+netdev@lunn.ch, toke@redhat.com, tariqt@nvidia.com, edumazet@google.com, pabeni@redhat.com, saeedm@nvidia.com, leon@kernel.org, ast@kernel.org, daniel@iogearbox.net, david@redhat.com, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, horms@kernel.org, linux-rdma@vger.kernel.org, bpf@vger.kernel.org, vishal.moola@gmail.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Stat-Signature: wmu68195qjxy6nq1z7ewr63ofxxwbtpu X-Rspamd-Queue-Id: 06A1E40002 X-Rspam-User: X-Rspamd-Server: rspam09 X-HE-Tag: 1749674930-737324 X-HE-Meta: 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 zDM4F+rr gwlC4zVlc3dU5YW8= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Jun 11, 2025 at 7:24=E2=80=AFAM Pavel Begunkov 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 bee= n > > 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: 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 --=20 Thanks, Mina