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| author | zhuxiaohui <zhuxiaohui400@gmail.com> | 2024-03-26 15:03:45 +0300 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-04-01 03:36:11 +0300 |
| commit | bb66009958b277a9baffaa53d835661852550151 (patch) | |
| tree | 56f5bfaead21b5f363ecfeb99efe04476c1d8bd4 /fs/bcachefs/btree_update_interior.c | |
| parent | 79032b078173f87a13f8618cdab710798be67314 (diff) | |
| download | linux-bb66009958b277a9baffaa53d835661852550151.tar.xz | |
bcachefs: add REQ_SYNC and REQ_IDLE in write dio
when writing file with direct_IO on bcachefs, then performance is
much lower than other fs due to write back throttle in block layer:
wbt_wait+1
__rq_qos_throttle+32
blk_mq_submit_bio+394
submit_bio_noacct_nocheck+649
bch2_submit_wbio_replicas+538
__bch2_write+2539
bch2_direct_write+1663
bch2_write_iter+318
aio_write+355
io_submit_one+1224
__x64_sys_io_submit+169
do_syscall_64+134
entry_SYSCALL_64_after_hwframe+110
add set REQ_SYNC and REQ_IDLE in bio->bi_opf as standard dirct-io
Signed-off-by: zhuxiaohui <zhuxiaohui.400@bytedance.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/btree_update_interior.c')
0 files changed, 0 insertions, 0 deletions