On Thu, May 22, 2025 at 05:52:32PM +0800, Gao Xiang wrote: > > > On 2025/5/22 17:49, 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> > Reviewed-by: Gao Xiang <hsiang...@linux.alibaba.com> >
BTW, the commit message has been updated to v4 version to fix some typos: https://lore.kernel.org/r/20250521100326.2867828-1-hsiang...@linux.alibaba.com Thanks, Gao Xiang
