From: Gao Xiang <hsiangkao@linux.alibaba.com>
To: Hongbo Li <lihongbo22@huawei.com>
Cc: hch@lst.de, djwong@kernel.org, amir73il@gmail.com,
linux-fsdevel@vger.kernel.org, linux-erofs@lists.ozlabs.org,
linux-kernel@vger.kernel.org, Chao Yu <chao@kernel.org>,
Christian Brauner <brauner@kernel.org>
Subject: Re: [PATCH v17 08/10] erofs: support unencoded inodes for page cache share
Date: Fri, 23 Jan 2026 00:39:56 +0800 [thread overview]
Message-ID: <6caf418e-b261-4354-9ddb-77daaadab045@linux.alibaba.com> (raw)
In-Reply-To: <20260122153406.660073-9-lihongbo22@huawei.com>
On 2026/1/22 23:34, Hongbo Li wrote:
> This patch adds inode page cache sharing functionality for unencoded
> files.
>
> I conducted experiments in the container environment. Below is the
> memory usage for reading all files in two different minor versions
> of container images:
>
> +-------------------+------------------+-------------+---------------+
> | Image | Page Cache Share | Memory (MB) | Memory |
> | | | | Reduction (%) |
> +-------------------+------------------+-------------+---------------+
> | | No | 241 | - |
> | redis +------------------+-------------+---------------+
> | 7.2.4 & 7.2.5 | Yes | 163 | 33% |
> +-------------------+------------------+-------------+---------------+
> | | No | 872 | - |
> | postgres +------------------+-------------+---------------+
> | 16.1 & 16.2 | Yes | 630 | 28% |
> +-------------------+------------------+-------------+---------------+
> | | No | 2771 | - |
> | tensorflow +------------------+-------------+---------------+
> | 2.11.0 & 2.11.1 | Yes | 2340 | 16% |
> +-------------------+------------------+-------------+---------------+
> | | No | 926 | - |
> | mysql +------------------+-------------+---------------+
> | 8.0.11 & 8.0.12 | Yes | 735 | 21% |
> +-------------------+------------------+-------------+---------------+
> | | No | 390 | - |
> | nginx +------------------+-------------+---------------+
> | 7.2.4 & 7.2.5 | Yes | 219 | 44% |
> +-------------------+------------------+-------------+---------------+
> | tomcat | No | 924 | - |
> | 10.1.25 & 10.1.26 +------------------+-------------+---------------+
> | | Yes | 474 | 49% |
> +-------------------+------------------+-------------+---------------+
>
> Additionally, the table below shows the runtime memory usage of the
> container:
>
> +-------------------+------------------+-------------+---------------+
> | Image | Page Cache Share | Memory (MB) | Memory |
> | | | | Reduction (%) |
> +-------------------+------------------+-------------+---------------+
> | | No | 35 | - |
> | redis +------------------+-------------+---------------+
> | 7.2.4 & 7.2.5 | Yes | 28 | 20% |
> +-------------------+------------------+-------------+---------------+
> | | No | 149 | - |
> | postgres +------------------+-------------+---------------+
> | 16.1 & 16.2 | Yes | 95 | 37% |
> +-------------------+------------------+-------------+---------------+
> | | No | 1028 | - |
> | tensorflow +------------------+-------------+---------------+
> | 2.11.0 & 2.11.1 | Yes | 930 | 10% |
> +-------------------+------------------+-------------+---------------+
> | | No | 155 | - |
> | mysql +------------------+-------------+---------------+
> | 8.0.11 & 8.0.12 | Yes | 132 | 15% |
> +-------------------+------------------+-------------+---------------+
> | | No | 25 | - |
> | nginx +------------------+-------------+---------------+
> | 7.2.4 & 7.2.5 | Yes | 20 | 20% |
> +-------------------+------------------+-------------+---------------+
> | tomcat | No | 186 | - |
> | 10.1.25 & 10.1.26 +------------------+-------------+---------------+
> | | Yes | 98 | 48% |
> +-------------------+------------------+-------------+---------------+
>
> Co-developed-by: Hongzhen Luo <hongzhen@linux.alibaba.com>
> Signed-off-by: Hongzhen Luo <hongzhen@linux.alibaba.com>
> Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Thanks,
Gao Xiang
next prev parent reply other threads:[~2026-01-22 16:40 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-22 15:33 [PATCH v17 00/10] erofs: Introduce page cache sharing feature Hongbo Li
2026-01-22 15:33 ` [PATCH v17 01/10] fs: Export alloc_empty_backing_file Hongbo Li
2026-01-22 15:33 ` [PATCH v17 02/10] erofs: decouple `struct erofs_anon_fs_type` Hongbo Li
2026-01-22 15:33 ` [PATCH v17 03/10] erofs: support user-defined fingerprint name Hongbo Li
2026-01-22 15:34 ` [PATCH v17 04/10] erofs: add erofs_inode_set_aops helper to set the aops Hongbo Li
2026-01-22 16:28 ` Gao Xiang
2026-01-22 15:34 ` [PATCH v17 05/10] erofs: using domain_id in the safer way Hongbo Li
2026-01-22 16:32 ` Gao Xiang
2026-01-22 15:34 ` [PATCH v17 06/10] erofs: introduce the page cache share feature Hongbo Li
2026-01-22 16:34 ` Gao Xiang
2026-01-22 15:34 ` [PATCH v17 07/10] erofs: pass inode to trace_erofs_read_folio Hongbo Li
2026-01-22 16:37 ` Gao Xiang
2026-01-22 15:34 ` [PATCH v17 08/10] erofs: support unencoded inodes for page cache share Hongbo Li
2026-01-22 16:39 ` Gao Xiang [this message]
2026-01-22 15:34 ` [PATCH v17 09/10] erofs: support compressed " Hongbo Li
2026-01-22 15:34 ` [PATCH v17 10/10] erofs: implement .fadvise " Hongbo Li
2026-01-22 16:40 ` Gao Xiang
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