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From: Shakeel Butt To: hanchuanhua@oppo.com Cc: akpm@linux-foundation.org, linux-mm@kvack.org, baolin.wang@linux.alibaba.com, chrisl@kernel.org, david@redhat.com, hannes@cmpxchg.org, hughd@google.com, kaleshsingh@google.com, kasong@tencent.com, linux-kernel@vger.kernel.org, mhocko@suse.com, minchan@kernel.org, nphamcs@gmail.com, ryan.roberts@arm.com, senozhatsky@chromium.org, shy828301@gmail.com, surenb@google.com, v-songbaohua@oppo.com, willy@infradead.org, xiang@kernel.org, ying.huang@intel.com, yosryahmed@google.com, hch@infradead.org, ryncsn@gmail.com Subject: Re: [PATCH v7 2/2] mm: support large folios swap-in for sync io devices Message-ID: References: <20240821074541.516249-1-hanchuanhua@oppo.com> <20240821074541.516249-3-hanchuanhua@oppo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240821074541.516249-3-hanchuanhua@oppo.com> X-Migadu-Flow: FLOW_OUT X-Rspamd-Queue-Id: 3AE7EC0023 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: rp1jzkdo6urta6amkazqy9mh85zzbkjy X-HE-Tag: 1724261473-887141 X-HE-Meta: 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 CHGddeHh YPIfwZHxkdQPF82rBNi1Vn4JsZkS9ABNDeeyazWYfsUkir3QNzOFGZtKY8AyGr1GgAOWGgJGK+NftuEqszDjEV/Ue2k3MHI/BsJKweytc43HvFEWqym6DGNdjsiV/3orVGS47P3DuWoUvatuLwfaUV5Hz5c8U4YOKoIhbCqrCp6JHotnOx4GLGeAfhP7mR6GfFop2lv9xxxe+STcYufdfVR632kqFnqX90xgIMbneLX6jHxDNMBvNjTSVVVbG7e89viaIOWnoTc6ynOk= 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, Aug 21, 2024 at 03:45:40PM GMT, hanchuanhua@oppo.com wrote: > From: Chuanhua Han > > > 3. With both mTHP swap-out and swap-in supported, we offer the option to enable > zsmalloc compression/decompression with larger granularity[2]. The upcoming > optimization in zsmalloc will significantly increase swap speed and improve > compression efficiency. Tested by running 100 iterations of swapping 100MiB > of anon memory, the swap speed improved dramatically: > time consumption of swapin(ms) time consumption of swapout(ms) > lz4 4k 45274 90540 > lz4 64k 22942 55667 > zstdn 4k 85035 186585 > zstdn 64k 46558 118533 Are the above number with the patch series at [2] or without? Also can you explain your experiment setup or how can someone reproduce these? > [2] https://lore.kernel.org/all/20240327214816.31191-1-21cnbao@gmail.com/