tailieunhanh - Configuring Windows 7 (Training Kit) - Part 72

Configuring Windows 7 (Training Kit) - Part 72. This training kit is designed for IT professionals who operate in enterprise enviroments that use Windows 7 as a desktop operating system. You should have at least one year of experience in the IT field, as well as experience implementing and administering any Windows client operating system in a networked environment. | 11. Use the same technique to add the C instance of the PhysicalDisk Avg. Disk Sec Read counter. This counter measures the average time in seconds to read data from the disk. If the value is larger than 25 milliseconds ms the disk system is experiencing latency delay when reading from the disk. In this case consider installing a faster disk system. 12. Use the same technique to add the C instance of the PhysicalDisk Avg. Disk Sec Write counter. This counter measures the average time in seconds to write data to the disk. If the value is larger than 25 ms the disk system is experiencing latency delay when writing to the disk. In this case consider installing a faster disk system. MORE INFO PHYSICALDISK DISK TIME COUNTER Because the value in the PhysicalDisk Disk Time counter can exceed 100 percent many administrators prefer to use PhysicalDisk Idle Time PhysicalDisk Avg. Disk Sec Read and PhysicalDisk Avg. Disk Sec Write counters to obtain a more accurate indication of hard disk usage. For more information about the PhysicalDisk Disk Time counter see http kb 310067. 13. Use the same technique to add the C instance of the PhysicalDisk Avg. Disk Queue Length counter. This counter indicates how many I O operations are waiting for the hard drive to become available. If the value of this counter is larger than twice the number of spindles in a disk array the physical disk itself might be the bottleneck. 14. Use the same technique to add the Memory Cache Bytes counter. This counter indicates the amount of memory being used for the file system cache. There might be a disk bottleneck if this value is greater than 300 MB. 15. Check that the Add Counters dialog box shows the same counters and instances as Figure 13-25. Click OK. NOTE COUNTER INCLUDED BY DEFAULT The Processor Processor Time counter is included by default and you do not need to add it. It does not appear in the list in Figure 13-25 but you can see it in the line graph histogram and report .