tests: common: pass --gtod_reduce=1 to fio

Inside VM guest, gettimeofday is often not routed via vdso, and
the syscall cost is heavy because of KPTI, so pass --gtod_reduce
for alleviating extra cost of syscall gettimeofday.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
1 file changed