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| author |   Jaegeuk Kim <jaegeuk@kernel.org> | 2018-08-09 17:53:34 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-08-20 23:13:42 -0700 |
| commit | 853137cef46ccc490e6fd4b160a1c252d6459842 (patch) | |
| tree | a2fe0cf5dc9d0bb412fbcd766264ac5d52587558 /arch | |
| parent | f2fs: fix to skip verifying block address for non-regular inode (diff) | |
| download | linux-dev-853137cef46ccc490e6fd4b160a1c252d6459842.tar.xz linux-dev-853137cef46ccc490e6fd4b160a1c252d6459842.zip | |
f2fs: fix performance issue observed with multi-thread sequential read
This reverts the commit - "b93f771 - f2fs: remove writepages lock"
to fix the drop in sequential read throughput.
Test: ./tiotest -t 32 -d /data/tio_tmp -f 32 -b 524288 -k 1 -k 3 -L
device: UFS
Before -
read throughput: 185 MB/s
total read requests: 85177 (of these ~80000 are 4KB size requests).
total write requests: 2546 (of these ~2208 requests are written in 512KB).
After -
read throughput: 758 MB/s
total read requests: 2417 (of these ~2042 are 512KB reads).
total write requests: 2701 (of these ~2034 requests are written in 512KB).
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions