Что означает 73.6% в Cache Search Misses?

Task Context Switches Due To:
Voluntary Yields 9.6 1.9 5744 0.6 %
Cache Search Misses 1178.4 237.4 707040 73.6 %
System Disk Writes 0.2 0.0 129 0.0 %
I/O Pacing 5.6 1.1 3360 0.3 %
Logical Lock Contention 0.0 0.0 5 0.0 %
Address Lock Contention 0.0 0.0 0 0.0 %
Latch Contention 0.2 0.1 149 0.0 %
Log Semaphore Contention 0.0 0.0 0 0.0 %
PLC Lock Contention 0.0 0.0 5 0.0 %
Group Commit Sleeps 0.0 0.0 5 0.0 %
Last Log Page Writes 4.8 1.0 2894 0.3 %
Modify Conflicts 0.1 0.0 44 0.0 %
I/O Device Contention 0.0 0.0 0 0.0 %
Network Packet Received 10.0 2.0 5992 0.6 %
Network Packet Sent 57.1 11.5 34276 3.6 %
Other Causes 334.5 67.4 200708 20.9 %