# Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU Library General Public # License as published by the Free Software Foundation; version 2 # of the License. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Library General Public License for more details. # # You should have received a copy of the GNU Library General Public # License along with this library; if not, write to the Free # Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, # MA 02110-1335 USA
# mysqldumpslow - parse and summarize the MySQL slow query log
# Original version by Tim Bunce, sometime in 2000. # Further changes by Tim Bunce, 8th March 2001. # Handling of strings with \ and double '' by Monty 11 Aug 2001.
use strict;
use Getopt::Long;
warn "$0: Deprecated program name. It will be removed in a future release, use 'mariadb-dumpslow' instead\n" if $0 =~ m/mysqldumpslow$/;
# t=time, l=lock time, r=rows, a=rows affected # at, al, ar and aa are the corresponding averages
my %opt = (
s => 'at',
h => '*',
);
GetOptions(\%opt, 'v|verbose+',# verbose 'help+', # write usage info 'd|debug+', # debug 's=s', # what to sort by (aa, ae, al, ar, at, a, c, e, l, r, t) 'r!', # reverse the sort order (largest last instead of first) 't=i', # just show the top n queries 'a!', # don't abstract all numbers to N and strings to 'S' 'n=i', # abstract numbers with at least n digits within names 'g=s', # grep: only consider stmts that include this string 'h=s', # hostname/basename of db server for *-slow.log filename (can be wildcard) 'i=s', # name of server instance (if using mysql.server startup script) 'l!', # don't subtract lock time from total time 'json|j!', # print as a JSON-formatted string
) or usage("bad option");
$opt{'help'} and usage();
# check if JSON module is available if ($opt{json}) { eval {
require JSON;
JSON->import(); 1;
} or do {
die "JSON module not found. Please install the JSON module to use --json option.\n";
};
}
unless (@ARGV) {
my $defaults = `my_print_defaults --mysqld`;
my $datadir = ($defaults =~ m/--datadir=(.*)/g)[-1]; if (!$datadir or $opt{i}) { # determine the datadir from the instances section of /etc/my.cnf, if any
my $instances = `my_print_defaults instances`;
die "Can't determine datadir from 'my_print_defaults instances' output: $defaults"
unless $instances;
my @instances = ($instances =~ m/^--(\w+)-/mg);
die "No -i 'instance_name' specified to select among known instances: @instances.\n"
unless $opt{i};
die "Instance '$opt{i}' is unknown (known instances: @instances)\n"
unless grep { $_ eq $opt{i} } @instances;
$datadir = ($instances =~ m/--$opt{i}-datadir=(.*)/g)[-1]
or die "Can't determine --$opt{i}-datadir from 'my_print_defaults instances' output: $instances";
warn "datadir=$datadir\n"if $opt{v};
}
my $slowlog = ($defaults =~ m/--log[-_]slow[-_]queries=(.*)/g)[-1]; if (!$slowlog)
{
$slowlog = ($defaults =~ m/--slow[-_]query[-_]log[-_]file=(.*)/g)[-1];
} if ( $slowlog )
{
@ARGV = ($slowlog);
die "Can't find '$slowlog'\n" unless @ARGV;
} else
{ if (!$opt{h})
{
$opt{h}= ($defaults =~ m/--log[-_]basename=(.*)/g)[-1];
}
@ARGV = <$datadir/$opt{h}-slow.log>;
die "Can't find '$datadir/$opt{h}-slow.log'\n" unless @ARGV;
}
}
warn "\nReading mysql slow query log from @ARGV\n";
my @pending;
my %stmt;
$/ = ";\n#"; # read entire statements using paragraph mode while (<>) {
warn "[[$_]]\n"if $opt{d}; # show raw paragraph being read
# remove fluff that mysqld writes to log when it (re)starts:
s!^.*Version.*started with:.*\n!!mg;
s!^Tcp port: \d+ Unix socket: \S+\n!!mg;
s!^Time.*Id.*Command.*Argument.*\n!!mg; # if there is only header info, skip if ($_ eq '') {
next;
}
sub usage {
my $str= shift;
my $text= <<HERE;
Usage: mysqldumpslow [ OPTS... ] [ LOGS... ]
Parse and summarize the MySQL slow query log. Options are
--verbose verbose
--debug debug
--help write this text to standard output
--json print as a JSON-formatted string
-v verbose
-d debug
-s ORDER what to sort by (aa, ae, al, ar, at, a, c, e, l, r, t), 'at' is default
aa: average rows affected
ae: aggregated rows examined
al: average lock time
ar: average rows sent
at: average query time
a: rows affected
c: count
e: rows examined
l: lock time
r: rows sent
t: query time
-r reverse the sort order (largest last instead of first)
-t NUM just show the top n queries
-a don't abstract all numbers to N and strings to 'S'
-n NUM abstract numbers with at least n digits within names
-g PATTERN grep: only consider stmts that include this string
-h HOSTNAME hostname of db server for *-slow.log filename (can be wildcard),
default is '*', i.e. match all
-i NAME name of server instance (if using mysql.server startup script)
-l don't subtract lock time from total time
-j print as a JSON-formatted string