Updated doc to include section on how to compile SPDK with link
time optimization (lto) gcc flag prior to running the benchmark.
Signed-off-by: John Kariuki <John.K.Kariuki@intel.com>
Change-Id: I1af4033144dd9f7594bcf40621acb7fb52018e7a
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/459330
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
851830c366