Top 10 most important performance counters for Windows and their recommended values
PhysicalDisk/%idle time - should not be less than ~%60
PhysicalDisk/Avg. Disk sec/Read should not be higher than ~20ms
PhysicalDisk/Avg. Disk sec/Write should not be higher than ~20ms
PhysicalDisk/Current disk queue length. should not be higher than 2
Memory\Available Mbytes, minimum 10% of memory should be free and available
\Memory\Pages/sec should not be higher than 1000
Network Interface(*)\Bytes Total/sec
Less than 40% of the interface consumed = Healthy
41%-64% of the interface consumed = Monitor or Caution
65-100% of the interface consumed = Critical, performance will be adversely affected
Network Interface(*)\Output Queue Length
0 = Healthy
1-2 = Monitor or Caution
Greater than 2 = Critical, performance will be adversely affected
Hyper-V Hypervisor Logical Processor(_Total)\% Total Run Time
Less than 60% consumed = Healthy
60% - 89% consumed = Monitor or Caution
90% - 100% consumed = Critical, performance will be adversely affected
Paging File\%Usage should not be higher than %10