Проект OpenNet: MAN poolstat (1) Команды и прикладные программы пользовательского уровня (FreeBSD и Linux)

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poolstat (1)

>> poolstat (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )

NAME

poolstat - report active pool
statistics

SYNOPSIS

poolstat [-p pool-list] [-r rset-list] [interval [count]]

poolstat [-p pool-list] [-o format -r rset-list] 
    [interval [count]]

DESCRIPTION

The poolstat utility iteratively examines all active pools on the system. It reports statistics based on the selected output mode. poolstat provides options to examine only specified pools and report resource set-specific statistics.

Without options, poolstat examines all pools, reports basic statistics for their resource sets, and exits.

DISPLAY FORMATS

In default output format, poolstat outputs a header line and a line for each pool. The line begins with the pool ID and its name, followed by a column of statistical data for the processor set attached to the pool.

The columns are defined as follows:

: Pool ID.

pool

: Pool name.

rid

: Resource set id.

rset

: Resource set name.

type

: Resource set type.

min

: Minimum resource set size.

max

: Maximum resource set size.

size

: Current resource set size.

used

: The measure of how much of the resource set is currently is use. This is calculated as the percentage utilization of the resource set multiplied by its size. If resource set has been reconfigured during last sampling interval, this value might be not reported (-).

load

: The absolute representation of the load that is put on the resource set. For the definition of this property see libpool(3LIB).

OPTIONS

The following options are supported:

-o format

Report statistics according to the format specification given in format. See DISPLAY FORMATS.

The -o option accepts lists as arguments. Items in a list can be either separated by commas or enclosed in quotes and separated by commas or spaces.

You can specify multiple -o options. The format specification is interpreted as the whitespace separated concatenation of all the format option arguments.

The -o option must be used in conjunction with the -r option.

-p pool-list

: Report only pools whose names are in the given list. If the -r option is also used, this option selects only resource sets which belong to pools in the given list. Statistics for pools or resource sets are reported in the same order in which pool names are listed on the pool-list. Pool can be specified by name or by ID.
The -p option accepts lists as arguments. Items in a pool-list can only be separated by spaces.

-r rset-list

Report resource set statistics. If the rset-list argument is "all", then all possible resource set types are selected.

The -r option accepts lists as arguments. Items in a list can be either separated by commas or enclosed in quotes and separated by commas or spaces.

The following resource set types are supported:

all

: All resource set types

pset

: Processor set

OPERANDS

The following operands are supported:

count

: The number of times that the statistics are repeated. By default, poolstat reports statistics only once.
If neither interval nor count are specified, statistics are reported once. If interval is specified and count is not, statistics are reported indefinitely.

interval

: The sampling interval in seconds.
If neither interval nor count are specified, statistics are reported once. If interval is specified and count is not, statistics are reported indefinitely.

EXAMPLES

Example 1 Using poolstat

The following example shows the default output from the poolstat utility:

% poolstat
                        pset
 id pool           size used load
  0 pool_default      4  3.6  6.2
  1 pool_admin        4  3.3  8.4

Example 2 Reporting Resource Set Statistics

The following example reports resource set statistics.

 
% poolstat -r pset
 id pool           type rid rset          min  max size used load
 0 pool_default    pset  -1 pset_default    1  65K    2  1.2  8.3
 1 pool_admin      pset   1 pset_admin      1    1    1  0.4  5.2
 2 pool_other      pset  -1 pset_default    1  65K    2  1.2  8.3

Resource sets attached to multiple pools, as pset_default in the example above, are listed multiple times, once for each pool.

Example 3 Restricting the Output to the List of Pools

The following example restricts the output to the list of pools

% poolstat -p pool_default
                    pset
id pool         size used load
0 pool_default    8  5.3 10.3

% poolstat -p 'pool_admin pool_default'
                      pset
 id pool         size used load
 1 pool_admin      6  4.3  5.3
 0 pool_default    2  1.9  2.0

% poolstat -r all -p 'pool_admin pool_default'
 id pool            type rid rset          min  max size used load
 1 pool_admin      pset   1 pset_admin      1    1    1  0.9  2.3
 2 pool_default    pset  -1 pset_default    1  65K    2  2.0  2.0

Example 4 Customizing Output

The following example customizes output:

% poolstat -r -o pool,rset,size,load
 pool            rset          size load
 pool_default    pset_default     4  4.5
 pool_admin      pset_admin       4  2.1