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* [PATCH V3 0/3] Improve virtio-blk performance
@ 2012-07-13  8:38 Asias He
  2012-07-13  8:38 ` [PATCH V3 1/3] block: Introduce __blk_segment_map_sg() helper Asias He
                   ` (2 more replies)
  0 siblings, 3 replies; 16+ messages in thread
From: Asias He @ 2012-07-13  8:38 UTC (permalink / raw)
  To: kvm, linux-kernel, virtualization
  Cc: Jens Axboe, Tejun Heo, Shaohua Li, Michael S. Tsirkin

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 (3):
  block: Introduce __blk_segment_map_sg() helper
  block: Add blk_bio_map_sg() helper
  virtio-blk: Add bio-based IO path for virtio-blk

 block/blk-merge.c          |  117 +++++++++++++++++--------
 drivers/block/virtio_blk.c |  203 +++++++++++++++++++++++++++++++++++---------
 include/linux/blkdev.h     |    2 +
 3 files changed, 247 insertions(+), 75 deletions(-)

-- 
1.7.10.4

^ permalink raw reply	[flat|nested] 16+ messages in thread

end of thread, other threads:[~2012-08-02  6:28 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-07-13  8:38 [PATCH V3 0/3] Improve virtio-blk performance Asias He
2012-07-13  8:38 ` [PATCH V3 1/3] block: Introduce __blk_segment_map_sg() helper Asias He
2012-07-13  8:38 ` [PATCH V3 2/3] block: Add blk_bio_map_sg() helper Asias He
2012-07-13  8:38 ` [PATCH V3 3/3] virtio-blk: Add bio-based IO path for virtio-blk Asias He
2012-07-27  0:33   ` Rusty Russell
2012-07-28  2:38     ` Asias He
2012-07-28  6:42       ` Paolo Bonzini
2012-07-30  4:43         ` Asias He
2012-07-30  7:31           ` Paolo Bonzini
2012-07-30 13:44             ` Christoph Hellwig
2012-08-02  6:28               ` Asias He
2012-07-30 13:43           ` Christoph Hellwig
2012-07-31  8:43             ` Asias He
2012-07-29 12:59       ` Michael S. Tsirkin
2012-07-30  0:26         ` Asias He
2012-07-27  6:29   ` Rusty Russell

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