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Operating Systems Linux How to Calculate Disk Queue length and Disk Busy Time Post 302514253 by sysgate on Friday 15th of April 2011 08:53:20 AM
Old 04-15-2011
The "Disk Queue Length" is a term more tied to Windows rather than Linux. You can, however, install "iostat" tool, it has plenty of useful information.
Here's the meaning of each value in /proc/diskstats :
Quote:
Field 1 -- # of reads issued
Field 2 -- # of reads merged, field 6 -- # of writes merged
Field 3 -- # of sectors read
Field 4 -- # of milliseconds spent reading
Field 5 -- # of writes completed
Field 7 -- # of sectors written
Field 8 -- # of milliseconds spent writing
Field 9 -- # of I/Os currently in progress
Field 10 -- # of milliseconds spent doing I/Os
Field 11 -- weighted # of milliseconds spent doing I/Os
 

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Mail::Field::Generic(3) 				User Contributed Perl Documentation				   Mail::Field::Generic(3)

NAME
Mail::Field::Generic - implementation for inspecific fields INHERITANCE
Mail::Field::Generic is a Mail::Field SYNOPSIS
use Mail::Field; my $field = Mail::Field->new('Subject', 'some subject text'); my $field = Mail::Field->new(subject => 'some subject text'); DESCRIPTION
A generic implementation for header fields without own implementation. This is fine for fields like "Subject", "X-Mailer", etc., where the field holds only a string of no particular importance/format. METHODS
Constructors Mail::Field::Generic->combine(FIELDS) See "Constructors" in Mail::Field Mail::Field::Generic->extract(TAG, HEAD [, INDEX ]) See "Constructors" in Mail::Field Mail::Field::Generic->new(TAG [, STRING | OPTIONS]) See "Constructors" in Mail::Field "Fake" constructors $obj->create(OPTIONS) -Option--Default Text '' Text => STRING $obj->parse([STRING]) Set the new text, which is empty when no STRING is provided. Accessors $obj->set(OPTIONS) See "Accessors" in Mail::Field $obj->stringify() See "Accessors" in Mail::Field $obj->tag() Mail::Field::Generic->tag() See "Accessors" in Mail::Field Smart accessors $obj->text([STRING]) See "Smart accessors" in Mail::Field DIAGNOSTICS
Error: Undefined subroutine <method> called Mail::Field objects use autoloading to compile new functionality. Apparently, the mehod called is not implemented for the specific class of the field object. SEE ALSO
This module is part of the MailTools distribution, http://perl.overmeer.net/mailtools/. AUTHORS
The MailTools bundle was developed by Graham Barr. Later, Mark Overmeer took over maintenance without commitment to further development. Mail::Cap by Gisle Aas <aas@oslonett.no>. Mail::Field::AddrList by Peter Orbaek <poe@cit.dk>. Mail::Mailer and Mail::Send by Tim Bunce <Tim.Bunce@ig.co.uk>. For other contributors see ChangeLog. LICENSE
Copyrights 1995-2000 Graham Barr <gbarr@pobox.com> and 2001-2007 Mark Overmeer <perl@overmeer.net>. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html perl v5.16.3 2012-12-21 Mail::Field::Generic(3)
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