c441e27023
Currently, we send IOs to the main_td thread. It is not needed, because all the read/write functions provided by librbd are thread safe, so we can eliminate the thread send messaging policy for read/write related functions. And with this patch, users can observe the load balance distribution of I/Os on each CPU core owned by spdk applications through spdk_top tool. In this patch, we did the following work: 1 Move rbd_open when create the bdev since we will create once. 2 Simplify the channel management. 3 Do not use thread send messaging to do the read/write I/Os. According to our experiment results showed in https://github.com/spdk/spdk/issues/2204 There will be more than 15% performance improvment in IOPS aspect for different write I/O patterns, and it also addresses the I/O Load balance issues. Fixes issue: #2204 Change-Id: I9d2851c3d772261c131f9678f4b1bf722328aabb Signed-off-by: Ziye Yang <ziye.yang@intel.com> Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/17644 Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> |
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| .. | ||
| bdev_rbd_rpc.c | ||
| bdev_rbd.c | ||
| bdev_rbd.h | ||
| Makefile | ||