MSDN中推荐的性能测试阀值
Recommended Thresholds for the Minimum Set of System Counters
Resource | Object\Counter | Suggested Threshold | Comments |
Disk |
LogicalDisk\ |
15 percent |
None |
Disk |
LogicalDisk\ |
90 percent |
None |
Disk |
PhysicalDisk\ |
Depends on manufacturer's specifications |
Check the specified transfer rate for your disks to verify that this rate does not exceed the specifications. In general, Ultra Wide SCSI disks can handle 50 to 70 I/O operations per second. |
Disk |
PhysicalDisk\ |
Number of spindles plus 2 |
This is an instantaneous counter; observe its value over several intervals. For an average over time, use PhysicalDisk\Avg. Disk Queue Length. |
Memory |
Memory\ Available Bytes |
Less than 4 MB |
Research memory usage and add memory if needed. |
Memory |
Memory\ Pages/ |
20 |
Research paging activity. |
Network |
Network Segment\% Net Utilization |
Depends on type of network |
You must determine the threshold based on the type of network you are running. For Ethernet networks, for example, 30 percent is the recommended threshold. |
Paging File |
Paging File\% Usage |
Above 70 percent |
Review this value in conjunction with Available Bytes and Pages/sec to understand paging activity on your computer. |
Processor |
Processor\% Processor Time |
85 percent |
Find the process that is using a high percentage of processor time. Upgrade to a faster processor or install an additional processor. |
Processor |
Processor\ Interrupts/sec |
Depends on processor; for current CPUs, use a threshold of 1500 interrupts per second |
A dramatic increase in this counter value without a corresponding increase in system activity indicates a hardware problem. Identify the network adapter or disk controller card causing the interrupts. You might need to install an additional adapter or controller card. |
Server |
Server\Bytes Total/sec |
|
If the sum of Bytes Total/sec for all servers is roughly equal to the maximum transfer rates of your network, you might need to segment the network. |
Server |
Server\Work Item Shortages |
3 |
If the value reaches this threshold, consider tuning the InitWorkItems or MaxWorkItems entries in the registry (in HKEY_LOCAL_MACHINE \SYSTEM \CurrentControlSet |
Server |
Server Work Queues\Queue Length |
4 |
If the value reaches this threshold, there might be a processor bottleneck. This is an instantaneous counter; observe its value over several intervals. |
Multiple Processors |
System\Processor Queue Length |
2 |
This is an instantaneous counter; observe its value over several intervals. |