Messages in this thread | | | From | Asias He <> | Subject | [PATCH V5 0/4] Improve virtio-blk performance | Date | Thu, 2 Aug 2012 14:25:52 +0800 |
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Hi folks,
This version added REQ_FLUSH and REQ_FUA support as suggested by Christoph and rebased against latest linus's tree.
Jens, could you please consider picking up the dependencies 1/4 and 2/4 in your tree. Thanks!
This patchset implements bio-based IO path for virito-blk to improve performance.
Fio test shows bio-based IO path gives the following performance improvement:
1) Ramdisk device With bio-based IO path, sequential read/write, random read/write IOPS boost : 28%, 24%, 21%, 16% Latency improvement: 32%, 17%, 21%, 16% 2) Fusion IO device With bio-based IO path, sequential read/write, random read/write IOPS boost : 11%, 11%, 13%, 10% Latency improvement: 10%, 10%, 12%, 10%
Asias He (4): block: Introduce __blk_segment_map_sg() helper block: Add blk_bio_map_sg() helper virtio-blk: Add bio-based IO path for virtio-blk virtio-blk: Add REQ_FLUSH and REQ_FUA support to bio path
block/blk-merge.c | 117 +++++++++++++------ drivers/block/virtio_blk.c | 279 ++++++++++++++++++++++++++++++++++++++------- include/linux/blkdev.h | 2 + 3 files changed, 324 insertions(+), 74 deletions(-)
-- 1.7.11.2
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