intrstat(1M) System Administration Commands intrstat(1M)NAMEintrstat - report interrupt statistics
SYNOPSIS
/usr/sbin/intrstat [-c cpulist | -C processor_set_id] [-T u | d ]
[-x opt[=val]] [interval [count]]
DESCRIPTION
The intrstat utility gathers and displays run-time interrupt statis‐
tics. The output is a table of device names and CPU IDs, where each row
of the table denotes a device, and each column of the table denotes a
CPU. Each cell in the table contains both the raw number of interrupts
for the given device on the given CPU, and the percentage of absolute
time spent in that device's interrupt handler on that CPU.
The device name is given in the form of {name}#{instance}. The name is
the normalized driver name, and typically corresponds to the name of
the module implementing the driver. See ddi_driver_name(9F). Many Sun-
delivered drivers have their own manual pages. See Intro(7).
If standard output is a terminal, the table contains as many columns of
data as can fit within the terminal width. If standard output is not a
terminal, the table contains at most four columns of data. By default,
data is gathered and displayed for all CPUs. If the data cannot fit in
a single table, it is printed across multiple tables. The set of CPUs
for which data is displayed can be optionally specified with the -c or
-C option.
By default, intrstat displays data once per second and runs indefi‐
nitely. Both of these behaviors can be optionally controlled with the
interval and count parameters, respectively. See OPERANDS.
Because intrstat uses dynamic discovery, it reports only on devices
that raise interrupts while the command is running. Any devices that
are silent while intrstat is running are not displayed.
intrstat induces a small system-wide performance degradation. As a
result, only the super-user can run intrstat by default. The Solaris
Dynamic Tracing Guide explains how administrators can grant privileges
to other users to permit them to run intrstat.
OPTIONS
The following options are supported:
-c cpulist
Displays data for the CPUs specified by cpulist.
cpulist can be a single processor ID (for example, 4), a range of
processor IDs (for example, 4-6), or a comma separated list of pro‐
cessor IDs or processor ID ranges (for example, 4,5,6 or 4,6-8).
-C processor_set_id
Displays data for the CPUs in the processor set specified by pro‐
cessor_set_id.
intrstat modifies its output to always reflect the CPUs in the
specified processor set. If a CPU is added to the set, intrstat
modifies its output to include the added CPU. If a CPU is removed
from the set, intrstat modifies its output to exclude the removed
CPU. At most one processor set can be specified.
-T u | d
Display a time stamp.
Specify u for a printed representation of the internal representa‐
tion of time. See time(2). Specify d for standard date format. See
date(1).
-x opt[=val]
Enable or modify a DTrace runtime option or D compiler option. The
list of options is found in the Solaris Dynamic Tracing Guide. A
boolean option is enabled by specifying its name. Options with val‐
ues are set by separating the option name and value with an equal
sign (=)
OPERANDS
The following operands are supported:
count
Indicates the number of intervals to execute before exiting.
interval
Indicates the number of seconds to be executed before exiting.
EXAMPLES
Example 1 Using intrstat Without Options
Without options, intrstat displays a table of trap types and CPUs. At
most, four columns can fit in the default terminal width. If there are
more than four CPUs, multiple tables are displayed.
The following example runs intrstat on a uniprocessor Intel IA/32-based
laptop:
example# intrstat
device | cpu0 %tim
-----------------+---------------
ata#0 | 166 0.4
ata#1 | 0 0.0
audioi810#0 | 6 0.0
i8042#0 | 281 0.7
iprb#0 | 6 0.0
uhci#1 | 6 0.0
uhci#2 | 6 0.0
device | cpu0 %tim
-----------------+---------------
ata#0 | 161 0.5
ata#1 | 0 0.0
audioi810#0 | 6 0.0
i8042#0 | 303 0.6
iprb#0 | 6 0.0
uhci#1 | 6 0.0
uhci#2 | 6 0.0
...
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │developer/dtrace │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │See below. │
└─────────────────────────────┴─────────────────────────────┘
The command-line syntax is Committed. The human-readable output is
Uncommitted.
SEE ALSOdtrace(1M), trapstat(1M), attributes(5), Intro(7), ddi_driver_name(9F)
Solaris Dynamic Tracing Guide
SunOS 5.11 16 Jun 2009 intrstat(1M)