Performance Monitor counters to analyze processor bottleneck

Counter Description Expected Value
Processor (_Total)%
Processor Time Percentage of time processor was busy Average value < 80%
% Privileged Time percentage of processor time spent in privileged mode Average value < 10%
System
Processor Queue Length Number of requests outstanding on the processor Average value < 2
Context Switches/sec Rate at which processor is switched per processor from one thread to another Average value < 2,000
SQL Server:SQL Statistics
Batch Requests/sec SQL command batches received per second Based on your standard workload
SQL Compilations/sec Number of times SQL is compiled Based on your standard workload
SQL Recompilations/sec Number of Recompiles

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