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Oracle Solaris Administration: Common Tasks     Oracle Solaris 11 Information Library
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Document Information

About This Book

1.  Locating Information About Oracle Solaris Commands

2.  Managing User Accounts and Groups (Overview)

3.  Managing User Accounts and Groups (Tasks)

4.  Booting and Shutting Down an Oracle Solaris System

5.  Working With Oracle Configuration Manager

6.  Managing Services (Overview)

7.  Managing Services (Tasks)

8.  Using the Fault Manager

9.  Managing System Information (Tasks)

10.  Managing System Processes (Tasks)

11.  Monitoring System Performance (Tasks)

Where to Find System Performance Tasks

System Performance and System Resources

Processes and System Performance

About Monitoring System Performance

Monitoring Tools

Displaying System Performance Information (Task Map)

Displaying Virtual Memory Statistics (vmstat)

How to Display Virtual Memory Statistics (vmstat)

How to Display System Event Information (vmstat -s)

How to Display Swapping Statistics (vmstat -S)

How to Display Interrupts Per Device (vmstat -i)

Displaying Disk Utilization Information (iostat)

How to Display Disk Utilization Information (iostat)

How to Display Extended Disk Statistics (iostat -xtc)

Displaying Disk Space Statistics (df)

How to Display Disk Space Information (df -k)

Monitoring System Activities (Task Map)

Monitoring System Activities (sar)

How to Check File Access (sar -a)

How to Check Buffer Activity (sar -b)

How to Check System Call Statistics (sar -c)

How to Check Disk Activity (sar -d)

How to Check Page-Out and Memory (sar -g)

Checking Kernel Memory Allocation

How to Check Kernel Memory Allocation (sar -k)

How to Check Interprocess Communication (sar -m)

How to Check Page-In Activity (sar -p)

How to Check Queue Activity (sar -q)

How to Check Unused Memory (sar -r)

How to Check CPU Utilization (sar -u)

How to Check System Table Status (sar -v)

How to Check Swapping Activity (sar -w)

How to Check Terminal Activity (sar -y)

How to Check Overall System Performance (sar -A)

Collecting System Activity Data Automatically (sar)

Running the sadc Command When Booting

Running the sadc Command Periodically With the sa1 Script

Producing Reports With the sa2 Shell Script

Setting Up Automatic Data Collection (sar)

How to Set Up Automatic Data Collection

12.  Managing Software Packages (Tasks)

13.  Managing Disk Use (Tasks)

14.  Scheduling System Tasks (Tasks)

15.  Setting Up and Administering Printers by Using CUPS (Tasks)

16.  Managing the System Console, Terminal Devices, and Power Services (Tasks)

17.  Managing System Crash Information (Tasks)

18.  Managing Core Files (Tasks)

19.  Troubleshooting System and Software Problems (Tasks)

20.  Troubleshooting Miscellaneous System and Software Problems (Tasks)

Index

Displaying Disk Utilization Information (iostat)

Use the iostat command to report statistics about disk input and output, and to produce measures of throughput, utilization, queue lengths, transaction rates, and service time. For a detailed description of this command, refer to the iostat(1M) man page.

How to Display Disk Utilization Information (iostat)

Example 11-3 Displaying Disk Utilization Information

The following example shows disk statistics that were gathered every five seconds.

$ iostat 5
tty        sd0           sd6           nfs1         nfs49           cpu
tin tout kps tps serv  kps tps serv  kps tps serv  kps tps serv  us sy wt id
 0    0   1   0   49    0   0    0    0   0    0    0   0   15   0  0  0 100
 0   47   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16  44   6  132    0   0    0    0   0    0    0   0    0   0  0  1 99
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   3   1   23    0   0    0    0   0    0    0   0    0   0  0  1 99
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100
 0   16   0   0    0    0   0    0    0   0    0    0   0    0   0  0  0 100

The following table describes the fields in the output of the iostat n command.

Device Type
Field Name
Description
Terminal
Device Type
tin
Number of characters in the terminal input queue
tout
Number of characters in the terminal output queue
Disk
Device Type
bps
Blocks per second
tps
Transactions per second
serv
Average service time, in milliseconds
CPU
Device Type
us
In user mode
sy
In system mode
wt
Waiting for I/O
id
Idle

How to Display Extended Disk Statistics (iostat -xtc)