Wilson Snyder > Schedule-Load-3.064 > Schedule::Load::Hosts::Host

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Module Version: 3.064   Source  

NAME ^

Schedule::Load::Hosts::Host - Return information about a host

SYNOPSIS ^

  See Schedule::Load::Hosts

DESCRIPTION ^

This package provides accessors for information about a specific host obtained via the Schedule::Load::Host package.

classes_match

Passed an array reference. Returns true if this host's class matches any class in the array referenced.

eval_match

Passed a subroutine reference that takes a single argument of a host reference. Returns true if the subroutine returns true. It may also be passed a string which forms a subroutine ("sub { my $self = shift; ....}"), in which case the string will be evaluated in a safe container.

fields

Returns all information fields for this host.

exists (key)

Returns if a specific field exists for this host.

get (key)

Returns the value of a specific field for this host.

ACCESSORS ^

A accessor exists for each field returned by the fields() call. Typical elements are described below.

adj_load

Total number of processes in run or on processor state, adjusted for any jobs that have a specific fixed_load or hold time, and adjusted for jobs that have not yet scheduled but are collecting resources for a new run. This is the load used for picking hosts.

archname

Architecture name from Perl build.

cpus

Number of CPUs. On hyperthreaded Linux systems, this indicates the maximum number of simultaneous threads that may execute; see physical_cpus for the real physical CPU count.

cpus_slash

Returns a string with the number of cpus, or in hyperthreaded systems, the number of physical cpus "/" the number of SMT cpus.

holds

Returns list of Schedule::Load::Hosts::Hold objects, sorted by age.

hostname

Name of the host.

max_clock

Maximum clock frequency.

load_limit

Limit on the loading that a machine can bear, often set to the number of CPUs to not allow overloading of a machine. Undefined if no limit.

osname

Operating system name from Perl build.

physical_cpus

Number of CPUs physically present.

reservable

If true, this host may be reserved for exclusive use by a user.

reserved

If true, this host is reserved, and this field contains a username and start time comment.

systype

System type from Perl build.

top_processes

Returns a reference to a list of top process objects, Schedule::Load::Hosts::Proc to access the information for each process. In an array context, returns a list; In a a scalar context, returns a reference to a list.

total_load

Total number of processes in run or on processor state.

total_pctcpu

Total CPU percentage used by all processes.

total_rss

Total resident memory used by all processes.

total_size

Total memory size, resident and swapped, used by all processes. This will often exceed the physical memory size.

DISTRIBUTION ^

The latest version is available from CPAN and from http://www.veripool.org/.

Copyright 1998-2011 by Wilson Snyder. This package is free software; you can redistribute it and/or modify it under the terms of either the GNU Lesser General Public License Version 3 or the Perl Artistic License Version 2.0.

AUTHORS ^

Wilson Snyder <wsnyder@wsnyder.org>

SEE ALSO ^

Schedule::Load, Schedule::Load::Hosts, Schedule::Load::Hosts::Proc

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