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linux/drivers/infiniband/ulp/isert
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Jenny Derzhavetz 9fd60088ff iser-target: Skip data copy if all the command data comes as immediate 
Given that supporting zcopy immediate data for all IOs requires
iser driver to use its own buffer allocations, we settle with
avoiding data copy for IOs with data length of up to 8K (which
is more latency sensitive anyway).

This trims IO write latency by up to 3us and increase IOPs
by up to 40% by saving CPU time doing sg_copy_from_buffer
(8K IO size is the obvious winner here).

Signed-off-by: Jenny Derzhavetz <jennyf@mellanox.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
 		2015-09-15 15:47:31 -07:00
..
Kconfig treewide: Fix typo in Kconfig 2013-10-14 15:23:02 +02:00
Makefile iser-target: Add iSCSI Extensions for RDMA (iSER) target driver 2013-04-25 01:09:41 -07:00
ib_isert.c iser-target: Skip data copy if all the command data comes as immediate 2015-09-15 15:47:31 -07:00
ib_isert.h iser-target: Skip data copy if all the command data comes as immediate 2015-09-15 15:47:31 -07:00
isert_proto.h iser-target: Add iSCSI Extensions for RDMA (iSER) target driver 2013-04-25 01:09:41 -07:00