单选题The statistics for a poorly performing x366 system are as follows： （1）Processor： 90% for 5 second increments （2）Memory page faults： 20/second average over 15 minutes （3）Disk： disk time 1% Which of the following will provide the greatest performance improvement？（）AAdd memoryBAdd a processorCAdd a faster disk subsystemDExchange the processor with a faster processor
单选题
The statistics for a poorly performing x366 system are as follows： （1）Processor： 90% for 5 second increments （2）Memory page faults： 20/second average over 15 minutes （3）Disk： disk time 1% Which of the following will provide the greatest performance improvement？（）
A
Add memory
B
Add a processor
C
Add a faster disk subsystem
D
Exchange the processor with a faster processor
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