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https://github.com/percona/percona-toolkit.git
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43b29d6374
Mostly bits and pieces at the moments. ReadKeyMini is a portable-ish Term::ReadKey. Used here by DiskstatsMenu, which is currently only for show. Diskstats has most of the logic of the old pt-diskstats, with parts now implemented by the DiskstatsGroupBy* classes; The latter subclass the former. As mentioned at the start, this is a work in progress. In addition to to not having all the parts attached, also missing are the data-gathering mode, the command-line argument parsing, and a large amount of tests.
91 lines
2.5 KiB
Perl
91 lines
2.5 KiB
Perl
# This program is copyright 2011 Percona Inc.
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# Feedback and improvements are welcome.
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#
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# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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# systems, you can issue `man perlgpl' or `man perlartistic' to read these
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# licenses.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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# Place, Suite 330, Boston, MA 02111-1307 USA.
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# ###########################################################################
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# DiskstatsGroupByDisk package
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# ###########################################################################
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{
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# Package: DiskstatsGroupByDisk
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#
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package DiskstatsGroupByDisk;
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use warnings;
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use strict;
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use English qw(-no_match_vars);
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use constant MKDEBUG => $ENV{MKDEBUG} || 0;
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use base qw( Diskstats );
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sub new {
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my ($class, %args) = @_;
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my $self = $class->SUPER::new(%args);
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$self->{iterations} = 0;
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return $self;
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}
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# Prints out one line for each disk, summing over the interval from first to
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# last sample.
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sub group_by_disk {
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my ($self, %args) = @_;
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my ($header_cb, $rest_cb) = $args{ qw( header_cb rest_cb ) };
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$self->clear_state;
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$self->parse_from(
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ts_callback => sub {
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if ( $self->has_stats ) {
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$self->{iterations}++
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}
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},
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map({ ($_ => $args{$_}) } qw(filehandle filename data)),
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);
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if ( $self->{iterations} < 2 ) {
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return;
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}
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$self->print_deltas( map( { ( $_ => $args{$_} ) } qw( header_cb rest_cb ) ) );
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$self->clear_state;
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}
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sub clear_state {
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my ($self, @args) = @_;
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$self->{iterations} = 0;
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$self->SUPER::clear_state(@args);
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}
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sub compute_line_ts {
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my ($self, %args) = @_;
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return "{" . ($self->{iterations} - 1) . "}";
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}
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sub delta_against {
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my ($self, $dev) = @_;
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return $self->first_stats_for($dev);
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}
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sub compute_in_progress {
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my ($self, $in_progress, $tot_in_progress) = @_;
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return $tot_in_progress / ($self->{iterations} - 1);
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}
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1;
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}
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# ###########################################################################
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# End DiskstatsGroupByDisk package
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# ###########################################################################
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