From: Gao Xiang <xiang@kernel.org> To: linux-erofs@lists.ozlabs.org, Chao Yu <chao@kernel.org> Cc: LKML <linux-kernel@vger.kernel.org>, Gao Xiang <xiang@kernel.org> Subject: [PATCH 0/3] erofs: some decompression improvements Date: Fri, 8 Oct 2021 01:06:02 +0800 [thread overview] Message-ID: <20211007170605.7062-1-xiang@kernel.org> (raw) Hi folks, This patchset is mainly intended for the upcoming LZMA preparation, but they still have some benefits to the exist LZ4 decompression. The first patch looks up compression algorithms on mapping instead of in the decompression frontend, which is used for the rest patches. The second patch introduces another compression HEAD (HEAD2) so that each file can be compressed with two different algorithms at most, which can be used for the upcoming LZMA compression and LZ4 range dictionary compression for various data patterns. The third patch introduces a new readmore decompression strategy to avoid partial decompression for large big pcluster. It resolves the randread issue mentioned in the original big pcluster patchset [1]: randread Kernel: 5.15.0-rc2+ pclustersize Vanilla Patched 4096 54.6 MiB/s 54.0 MiB/s 16384 117.4 MiB/s 143.8 MiB/s 32768 113.6 MiB/s 199.6 MiB/s 65536 72.8 MiB/s 236.4 MiB/s The latest version can also be fetched from git://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git -b erofs/readmore [1] https://lore.kernel.org/r/20210407043927.10623-1-xiang@kernel.org Thanks, Gao Xiang Gao Xiang (3): erofs: get compression algorithms directly on mapping erofs: introduce the secondary compression head erofs: introduce readmore decompression strategy fs/erofs/compress.h | 5 -- fs/erofs/erofs_fs.h | 8 ++- fs/erofs/internal.h | 28 ++++++++- fs/erofs/zdata.c | 106 ++++++++++++++++++++++++++--------- fs/erofs/zmap.c | 57 ++++++++++++------- include/trace/events/erofs.h | 2 +- 6 files changed, 150 insertions(+), 56 deletions(-) -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: Gao Xiang <xiang@kernel.org> To: linux-erofs@lists.ozlabs.org, Chao Yu <chao@kernel.org> Cc: LKML <linux-kernel@vger.kernel.org> Subject: [PATCH 0/3] erofs: some decompression improvements Date: Fri, 8 Oct 2021 01:06:02 +0800 [thread overview] Message-ID: <20211007170605.7062-1-xiang@kernel.org> (raw) Hi folks, This patchset is mainly intended for the upcoming LZMA preparation, but they still have some benefits to the exist LZ4 decompression. The first patch looks up compression algorithms on mapping instead of in the decompression frontend, which is used for the rest patches. The second patch introduces another compression HEAD (HEAD2) so that each file can be compressed with two different algorithms at most, which can be used for the upcoming LZMA compression and LZ4 range dictionary compression for various data patterns. The third patch introduces a new readmore decompression strategy to avoid partial decompression for large big pcluster. It resolves the randread issue mentioned in the original big pcluster patchset [1]: randread Kernel: 5.15.0-rc2+ pclustersize Vanilla Patched 4096 54.6 MiB/s 54.0 MiB/s 16384 117.4 MiB/s 143.8 MiB/s 32768 113.6 MiB/s 199.6 MiB/s 65536 72.8 MiB/s 236.4 MiB/s The latest version can also be fetched from git://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git -b erofs/readmore [1] https://lore.kernel.org/r/20210407043927.10623-1-xiang@kernel.org Thanks, Gao Xiang Gao Xiang (3): erofs: get compression algorithms directly on mapping erofs: introduce the secondary compression head erofs: introduce readmore decompression strategy fs/erofs/compress.h | 5 -- fs/erofs/erofs_fs.h | 8 ++- fs/erofs/internal.h | 28 ++++++++- fs/erofs/zdata.c | 106 ++++++++++++++++++++++++++--------- fs/erofs/zmap.c | 57 ++++++++++++------- include/trace/events/erofs.h | 2 +- 6 files changed, 150 insertions(+), 56 deletions(-) -- 2.20.1
next reply other threads:[~2021-10-07 17:06 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-07 17:06 Gao Xiang [this message] 2021-10-07 17:06 ` [PATCH 0/3] erofs: some decompression improvements Gao Xiang 2021-10-07 17:06 ` [PATCH 1/3] erofs: get compression algorithms directly on mapping Gao Xiang 2021-10-07 17:06 ` Gao Xiang 2021-10-08 3:00 ` Yue Hu 2021-10-08 3:00 ` Yue Hu 2021-10-08 3:28 ` Gao Xiang 2021-10-08 3:28 ` Gao Xiang 2021-10-07 17:06 ` [PATCH 2/3] erofs: introduce the secondary compression head Gao Xiang 2021-10-07 17:06 ` Gao Xiang 2021-10-07 17:06 ` [PATCH 3/3] erofs: introduce readmore decompression strategy Gao Xiang 2021-10-07 17:06 ` Gao Xiang
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20211007170605.7062-1-xiang@kernel.org \ --to=xiang@kernel.org \ --cc=chao@kernel.org \ --cc=linux-erofs@lists.ozlabs.org \ --cc=linux-kernel@vger.kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.