Resource
|
Object\ Counter
|
Suggested threshold
|
Comments
|
Disk |
PhysicalDisk\ % Disk
Time |
90%
|
|
Disk |
PhysicalDisk\ Disk
Reads/sec, PhysicalDisk\ Disk Writes/sec |
Depends on manufacturer's
specifications |
Check the specified
transfer rate for your disks to verify
that this rate doesn't exceed the
specifications. In general, Ultra Wide
SCSI disks can handle 50 I/O operations
per second. |
Disk |
Physical Disk\ Current
Disk Queue Length |
|
This is an instantaneous
counter; observe its value over several
intervals. For an average over time, use
Physical Disk\ Avg. Disk Queue Length. |
Memory |
Memory\ Available Bytes |
Less than 4 MB |
Research memory usage
and add memory if needed. |
Memory |
Memory\ Pages/sec |
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% is the recommended
threshold. |
Paging File |
Paging File\ % Usage |
99% |
Review this value in
conjunction with Available Bytes and
Pages/sec to understand paging activity
on your computer. |
Processor |
Processor\ %
Processor Time |
85% |
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. |
A dramatic increase in
this counter value without a
corresponding increase in system
activity indicates a hardware problem.
Identify the network adapter causing the
interrupts. |
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 may need to
segment the network. |
Server |
Server\ Work Item
Shortages |
3 |
If the value reaches
this threshold, consider tuning
InitWorkItems or MaxWorkItems in the
registry (under
HKEY_LOCAL_MACHINE\SYSTEM\
CurrentControlSet\Services\LanmanServer).
|
Server |
Server\ Pool Paged Peak |
Amount of physical RAM |
This value is an
indicator of the maximum paging file
size and the amount of physical memory. |
Server |
Server Work Queues\
Queue Length |
4 |
If the value reaches
this threshold, there may be a processor
bottleneck. This is an instantaneous
counter; observe its value over several
intervals |