The following query shows resource wait time and signal wait time both in value and in percentage. This is particularly useful in ascertaining if there is CPU pressure in your SQL Server. A higher signal wait time percentage can be a sign of CPU pressure or need for faster CPU on the server.
select
SUM
(signal_wait_time_ms)
as
total_signal_wait_time_ms,
SUM
(wait_time_ms - signal_wait_time_ms)
as
resource_wait_time_ms,
SUM
(signal_wait_time_ms) * 1.0/
SUM
(wait_time_ms) *100
as
signal_wait_percent,
SUM
(wait_time_ms - signal_wait_time_ms) * 1.0 /
SUM
(wait_time_ms) * 100
as
resource_wait_percent
from
sys.dm_os_wait_stats