linux/drivers/infiniband/ulp
Gioh Kim 4693d6b767 RDMA/rtrs: Remove all likely and unlikely
The IO performance test with fio after swapping the likely and unlikely
macros in all if-statement shows no difference.  They do not help for the
performance of rtrs.

Thanks to Haakon Bugge for the test scenario.

The fio test did random read on 32 rnbd devices and 64 processes.
Test environment:
- Intel(R) Xeon(R) Gold 6130 CPU @ 2.10GHz
- 376G memory
- kernel version: 5.4.86
- gcc version: gcc (Debian 8.3.0-6) 8.3.0
- Infiniband controller: Mellanox Technologies MT27800 Family [ConnectX-5]

Test result:
- before swapping:       IOPS=829k, BW=3239MiB/s
- after swapping:        IOPS=829k, BW=3238MiB/s
- remove all (un)likely: IOPS=829k, BW=3238MiB/s

Link: https://lore.kernel.org/r/20210806112112.124313-5-haris.iqbal@ionos.com
Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-08-22 19:22:59 -03:00
..
ipoib Linux 5.13-rc7 2021-06-22 14:43:51 -03:00
iser SCSI misc on 20210702 2021-07-02 15:14:36 -07:00
isert IB/isert: Align target max I/O size to initiator size 2021-06-24 09:07:53 -03:00
opa_vnic RDMA: Convert comma to semicolon 2021-01-07 13:53:41 -04:00
rtrs RDMA/rtrs: Remove all likely and unlikely 2021-08-22 19:22:59 -03:00
srp SCSI misc on 20210702 2021-07-02 15:14:36 -07:00
srpt IB/srpt: Remove redundant assignment to ret 2021-05-11 13:42:17 -03:00
Makefile RDMA/rtrs: include client and server modules into kernel compilation 2020-05-17 18:57:15 -03:00