Performance reporting and analysis commands

The commands are as follows:

Command

Function

alstat

Reports alignment exceptions counts

atmstat

Shows Asynchronous Transfer Mode (ATM) adapter statistics

curt

Reports CPU utilization for each kernel thread.

emstat

Reports emulation instruction counts

entstat

Shows ethernet device driver and device statistics

fddistat

Shows FDDI device driver and device statistics

filemon

Uses the trace facility to report on the I/O activity of physical volumes, logical volumes, individual files, and the Virtual Memory Manager

fileplace

Displays the physical or logical placement of the blocks that constitute a file within the physical or logical volume on which they reside

gprof

Reports the flow of control among the subroutines of a program and the amount of CPU time consumed by each subroutine

ifconfig

Configures or displays network interface parameters for a network using TCP/IP

ioo

Sets I/O related tuning parameters (along with vmo, replaces vmtune command.

iostat

Displays utilization data for:

• Terminals
• CPU
• Disks
• Adapters

ipfilter

Extracts different operation headers from an ipreport output file and displays them in a table

ipreport

Generates a packet trace report from the specified packet trace file

iptrace

Provides interface-level packet tracing for Internet protocols

locktrace

Turns on lock tracing

lsattr

Displays attributes of the system that affect performance, such as:

• Processor speed
• Size of the caches
• Size of real memory
• Maximum number of pages in the block I/O buffer cache
• Maximum number of kilobytes of memory allowed for mbufs
• High- and low-water marks for disk-I/O pacing

lsdev

Displays devices in the system and their characteristics

lslv

Displays information about a logical volume

lsps

Displays the characteristics of paging spaces

lspv

Displays information about a physical volume within a volume group

lsvg

Displays information about volume groups

mtrace

Prints a multicast path from a source to a receiver

netpmon

Uses the trace facility to report on network activity, including:

• CPU consumption
• Data rates
• Response time

netstat

Displays a wide variety of configuration information and statistics on communications activity, such as:

• Current status of the mbuf pool
• Routing tables
• Cumulative statistics on network activity

nfso

Displays (or changes) the values of NFS options

nfsstat

Displays statistics on Network File System (NFS) and Remote Procedure Call (RPC) server and client activity

no

Displays (or changes) the values of network options, such as:

• Default send and receive socket buffer sizes
• Maximum total amount of memory used in mbuf and cluster pools

pdt_config

Starts, stops, or changes the parameters of the Performance Diagnostic Tool

pdt_report

Generates a PDT report based on the current historical data

pprof

Reports CPU usage of all kernel threads over a period of time

prof

Displays object file profile data

ps

Displays statistics and status information about the processes in the system, such as:

• Process ID
• I/O activity
• CPU utilization

sar

Displays statistics on operating-system activity, such as:

• Directory accesses
• Read and write system calls
• Forks and execs
• Paging activity

schedo

Sets tuning parameters for CPU scheduler (replaces schedtune command.

smitty

Displays (or changes) system-management parameters

splat

Lock contention analysis tool

svmon

Reports on the status of memory at system, process, and segment levels

tcpdump

Prints out packet headers

time, timex

Prints the elapsed and CPU time used by the execution of a command

topas

Reports selected local system statistics

tokstat

Shows Token-Ring device driver and device statistics

tprof

Uses the trace facility to report the CPU consumption of kernel services, library subroutines, application-program modules, and individual lines of source code in the application program

trace, trcrpt

Writes a file that records the exact sequence of activities within the system

traceroute

Prints the route that IP packets take to a network host

vmo

Sets VMM related tuning parameters (along with ioo, replaces the vmtune command.)

vmstat

Displays VMM data, such as:

• Number of processes that are dispatchable or waiting
• Page-frame free-list size
• Page-fault activity
• CPU utilization