While your computer is running, counters in the operating system are incremented to track various system activities. System activities that are tracked are as follows:
Central processing unit (CPU) utilization
Buffer usage
Disk and tape input/output (I/O) activity
Terminal device activity
System call activity
Context switching
File access
Queue activity
Kernel tables
Interprocess communication
Paging
Free memory and swap space
Kernel memory allocation (KMA)
The Solaris software provides several tools to help you track how your system is performing. The following table describes these tools.
Table 18.3. Performance Monitoring Tools
|
Command |
Description |
For More Information |
|---|---|---|
|
cpustat and cputrack commands |
Monitors performance of a system or a process using CPU performance counters. |
cpustat ( 1M ) and cputrack ( 1 ) |
|
netstat and nfsstat commands |
Displays information about network performance |
netstat ( 1M ) and nfsstat ( 1M ) |
|
ps and prstat commands |
Displays information about active processes |
Chapter 19, Managing System Processes (Tasks) |
|
sar and sadc commands |
Collects and reports on system activity data |
Chapter 20, Monitoring System Performance (Tasks) |
|
Sun Enterprise SyMON |
Collects system activity data on Sun's enterprise-level systems |
Sun Enterprise SyMON 2.0.1 Software User's Guide |
|
swap command |
Displays information about available swap space on your system |
Chapter 21, Configuring Additional Swap Space (Tasks), in System Administration Guide: Devices and File Systems |
|
vmstat and iostat commands |
Summarizes system activity data, such as virtual memory statistics, disk usage, and CPU activity |
Chapter 20, Monitoring System Performance (Tasks) |
|
cputrack and cpustat commands |
Assists in accessing hardware performance counter facilities provided by microprocessors |
cputrack ( 1 ) and cpustat ( 1M ) man pages |
|
kstat and mpstat commands |
Examines the available kernel statistics, or |
kstat ( 1M ) and mpstat ( 1M ) man pages. |