mirror of
https://github.com/percona/percona-toolkit.git
synced 2025-09-11 05:29:30 +00:00
d3ef9edaaa
Still TODO: Attributes still have a single method that doubles as a getter and setter. The constructor for Diskstats is still weird -- A tad more stricter than it should be, if anything. ->print_rest is still rest, even though that's hardly memorable, mostly because of a lack of ideas on what to rename it. The main loop in the Menu is still a while (1). As a nice perk, it's nearly twice as fast now! It also adds a _very_ experimental --memory-for-speed argument, which turns on memoization for the current biggest bottleneck.
147 lines
4.2 KiB
Perl
147 lines
4.2 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, @args) = @_;
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$self->group_by_disk(@args);
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}
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# Prints out one line for each disk, summing over the interval from first to
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# last sample.
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sub group_by_disk {
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my ($self, %args) = @_;
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my ($header_callback, $rest_callback) = $args{ qw( header_callback rest_callback ) };
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$self->clear_state() unless $self->interactive();
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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 = ( $self->curr_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_callback => sub {
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my ($self, @args) = @_;
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if ( $self->{_print_header} ) {
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my $method = $args{header_callback}
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|| "print_header";
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$self->$method(@args);
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}
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$self->{_print_header} = undef;
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},
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rest_callback => $args{rest_callback},
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);
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$self->{_iterations} = -1;
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return;
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}
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}
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}
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},
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filehandle => $args{filehandle},
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filename => $args{filename},
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data => $args{data},
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);
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if ($self->interactive) {
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if ($self->{_iterations} == -1 && defined($original_offset)
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&& 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(
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header_callback => $args{header_callback},
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rest_callback => $args{rest_callback},
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);
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$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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