>-----Original Message----- >From: Gao Xiang <hsiang...@linux.alibaba.com> >Sent: Thursday, May 22, 2025 3:54 PM >To: Bo Liu (刘波)-浪潮信息 <liub...@inspur.com>; xi...@kernel.org; >c...@kernel.org >Cc: linux-erofs@lists.ozlabs.org; linux-ker...@vger.kernel.org >Subject: Re: [PATCH v5] erofs: support deflate decompress by using Intel QAT > >Hi Bo, > >On 2025/5/22 14:16, Bo Liu wrote: >> This patch introdueces the use of the Intel QAT to decompress >> compressed data in the EROFS filesystem, aiming to improve the >> decompression speed of compressed datea. >> >> We created a 285MiB compressed file and then used the following >> command to create EROFS images with different cluster size. >> # mkfs.erofs -zdeflate,level=9 -C16384 >> >> fio command was used to test random read and small random read(~5%) >> and sequential read performance. >> # fio -filename=testfile -bs=4k -rw=read -name=job1 >> # fio -filename=testfile -bs=4k -rw=randread -name=job1 >> # fio -filename=testfile -bs=4k -rw=randread --io_size=14m >> -name=job1 >> >> Here are some performance numbers for reference: >> >> Processors: Intel(R) Xeon(R) 6766E(144 core) >> Memory: 521 GiB >> >> |-----------------------------------------------------------------------------| >> | | Cluster size | sequential read | randread | small >> | randread(5%) | >> |-----------|--------------|-----------------|-----------|--------------------| >> | Intel QAT | 4096 | 538 MiB/s | 112 MiB/s | 20.76 >MiB/s | >> | Intel QAT | 16384 | 699 MiB/s | 158 MiB/s | 21.02 >MiB/s | >> | Intel QAT | 65536 | 917 MiB/s | 278 MiB/s | 20.90 >MiB/s | >> | Intel QAT | 131072 | 1056 MiB/s | 351 MiB/s | 23.36 >MiB/s | >> | Intel QAT | 262144 | 1145 MiB/s | 431 MiB/s | 26.66 >MiB/s | >> | deflate | 4096 | 499 MiB/s | 108 MiB/s | 21.50 >MiB/s | >> | deflate | 16384 | 422 MiB/s | 125 MiB/s | 18.94 >MiB/s | >> | deflate | 65536 | 452 MiB/s | 159 MiB/s | 13.02 >MiB/s | >> | deflate | 131072 | 452 MiB/s | 177 MiB/s | 11.44 >MiB/s | >> | deflate | 262144 | 466 MiB/s | 194 MiB/s | 10.60 >MiB/s | >> >> Signed-off-by: Bo Liu <liub...@inspur.com> >> --- >> v1: >> https://lore.kernel.org/linux-erofs/20250410042048.3044-1-liubo03@insp >> ur.com/ >> v2: >> https://lore.kernel.org/linux-erofs/20250410042048.3044-1-liubo03@insp >> ur.com/T/#t >> v3: >> https://lore.kernel.org/linux-erofs/20250516082634.3801-1-liubo03@insp >> ur.com/ >> v4: >> https://lore.kernel.org/linux-erofs/20250521100326.2867828-1-hsiangkao >> @linux.alibaba.com/ >> change since v4: >> - add sysfs documentation. >> >> Documentation/ABI/testing/sysfs-fs-erofs | 12 ++ >> fs/erofs/Kconfig | 14 ++ >> fs/erofs/Makefile | 1 + >> fs/erofs/compress.h | 10 ++ >> fs/erofs/decompressor_crypto.c | 186 >+++++++++++++++++++++++ >> fs/erofs/decompressor_deflate.c | 17 ++- >> fs/erofs/sysfs.c | 34 ++++- >> fs/erofs/zdata.c | 1 + >> 8 files changed, 272 insertions(+), 3 deletions(-) >> create mode 100644 fs/erofs/decompressor_crypto.c >> >> diff --git a/Documentation/ABI/testing/sysfs-fs-erofs >> b/Documentation/ABI/testing/sysfs-fs-erofs >> index b134146d735b..95201a62f704 100644 >> --- a/Documentation/ABI/testing/sysfs-fs-erofs >> +++ b/Documentation/ABI/testing/sysfs-fs-erofs >> @@ -27,3 +27,15 @@ Description: Writing to this will drop >compression-related caches, >> - 1 : invalidate cached compressed folios >> - 2 : drop in-memory pclusters >> - 3 : drop in-memory pclusters and cached compressed folios >> + >> +What: /sys/fs/erofs/accel >> +Date: May 2025 >> +Contact: "Bo Liu" <liub...@inspur.com> >> +Description: The accel file is read-write and allows to set or show >> + hardware decompression accelerators, and it supports writing >> + multiple accelerators separated by ‘\n’. > > Used to set or show hardware accelerators in effect and multiple > accelerators are separated by '\n'. > > Supported accelerator(s): qat_deflate > > Disable all accelerators with an empty string (echo > accel). > >> + Currently supported accelerators: > >... OK, I will make some changes
Thanks Bo Liu
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