mirror of
https://github.com/percona/percona-toolkit.git
synced 2025-09-18 01:33:14 +00:00
7b12dbec64
With this most of the interactive mode should be working. pt_diskstats.pm has the documentation and can be used for testing, which should be in the next commit. This commit also includes the revamped command line options.
143 lines
4.1 KiB
Perl
143 lines
4.1 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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$self->{_print_header} = 1;
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return $self;
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}
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sub group_by {
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my $self = shift;
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$self->group_by_disk(@_);
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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) = $args{ qw( header_cb rest_cb ) };
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if (!$self->interactive()) {
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$self->clear_state();
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}
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my $original_offset = $args{filehandle} ? tell($args{filehandle}) : undef;
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my $lines_read = $self->parse_from(
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sample_callback => sub {
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my ($self, $ts) = @_;
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if ( $self->has_stats ) {
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$self->{_iterations}++;
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if ($self->interactive() && $self->{_iterations} >= 2) {
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my $elapsed =
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( $self->current_ts() || 0 ) -
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( $self->first_ts() || 0 );
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if ( $ts > 0 && $elapsed >= $self->sample_time() ) {
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$self->print_deltas(
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header_cb => sub {
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my ($self, @args) = @_;
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if ( $self->{_print_header} ) {
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my $meth = $args{header_cb} || "print_header";
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$self->$meth(@args);
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}
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$self->{_print_header} = undef;
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},
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rest_cb => $args{rest_cb},
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);
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$self->{_iterations} = -1;
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return "Stop interactive reading";
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}
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}
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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 ($self->interactive) {
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if ($self->{_iterations} == -1 && defined($original_offset) && eof($args{filehandle})) {
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$self->clear_state;
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seek $args{filehandle}, $original_offset, 0;
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}
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return $lines_read;
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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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return $lines_read;
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}
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sub clear_state {
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my ($self, @args) = @_;
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my $orig_print_h = $self->{_print_header};
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$self->{_iterations} = 0;
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$self->SUPER::clear_state(@args);
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$self->{_print_header} = $orig_print_h;
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}
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sub compute_line_ts {
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my ($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 delta_against_ts {
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my ($self) = @_;
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return $self->first_ts();
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}
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sub compute_in_progress {
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my ($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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