Searched hist:"6888 da81" (Results 1 – 1 of 1) sorted by relevance
/openbmc/linux/drivers/target/ |
H A D | target_core_user.c | 6888da81 Sat Feb 27 11:00:04 CST 2021 Mike Christie <michael.christie@oracle.com> scsi: target: tcmu: Add backend plug/unplug callouts
This patch adds plug/unplug callouts for tcmu, so we can avoid the number of times we switch to userspace. Using this driver with tcm_loop is a common config, and dependng on the nr_hw_queues (nr_hw_queues=1 performs much better) and fio jobs (lower num jobs around 4) this patch can increase IOPS by only around 5-10% because we hit other issues like the big per tcmu device mutex.
Link: https://lore.kernel.org/r/20210227170006.5077-24-michael.christie@oracle.com Reviewed-by: Bodo Stroesser <bostroesser@gmail.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|