Microsoft Sharepoint Products and Technologies Resource Kit eBook

Chapter 10: Performance Monitoring in Microsoft Office SharePoint Portal Server 2003 255
In addition, consider adding a separate subnet for online backup and restore
and monitoring by adding additional NICs to each server to reduce the network traffic
on the VLAN that carries the end-user access traffic.
You can measure the traffic in the network by checking the SNMP MIBs of
interface devices, calculated as total bytes per second.
Network Load Balancing
Event log records provide crucial information that can help you analyze and solve
problems. Use the nlb.exe display command to display the most recent event log
records produced by Network Load Balancing. For more information, see Chapter 4,
“Windows SharePoint Services Architecture.”
Windows Server 2003
Windows Server 2003 comes with tools for monitoring various services, including
the Active Directory directory service. This information assists you in determining
when the directory service is experiencing a problem as a result of the operating
system. Windows Server 2003 probes are used across all servers to provide information
about the status of the operating system.
Table 10-7 shows the most important operating system performance counters.
You can observe these counters by using Windows Server 2003 System Monitor.
Table 10-7 Performance Counters and Thresholds for Windows Server 2003
Object Counter
Logical
disk
Logical
disk
Logical
disk
Physical
disk
Physical
disk
Free megabytes
Interval/
minutes Threshold Description
15 Less than
10 percent
of logical
disk size.
Shows unallocated disk space. If this
threshold is met, the system is running
out of available disk space.
% free space 15 15 percent. Shows unallocated disk space. If this
threshold is met, the system is running
out of available disk space.
% disk time 15 90 percent. % disk time is the percentage of elapsed
time that the selected disk drive was busy
servicing read or write requests.
Disk reads/sec,
Disk writes/sec
Current disk
queue length
15 Depends on
manufacturer’s
specifications.
1 Number of
spindles
plus 2.
Checks the specified disk transfer rate 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.
This is an instantaneous counter. Observe
the value over several intervals. For
an average over time, use physical
disk\average disk queue length.