mysqldumpslow.sh BitKeeper file /my/bk/mysql/scripts/mysqldumpslow.sh

scripts/mysqldumpslow.sh

@@ -0,0 +1,76 @@
+#@perl@
+# mysqldumpslow - parse and summarize the MySQL slow query log
+
+use strict;
+use Getopt::Long;
+
+# t=time, l=lock time, r=rows
+# at, al, and ar are the corresponding averages
+
+my %opt = (
+	s => 'at',
+	h => '*',
+);
+
+GetOptions(\%opt,
+	'v+',		# verbose
+	'd+',		# debug
+	's=s',		# what to sort by (t, at, l, al, r, ar etc)
+	'a!',		# don't abstract all numbers to N and strings to 'S'
+	'g=s',		# grep: only consider stmts that include this string
+	'h=s',		# hostname of db server (can be wildcard)
+) or die "Bad option";
+
+my %stmt;
+
+my $datadir = "/var/lib/mysql";	# XXX should fetch dynamically
+@ARGV = <$datadir/$opt{h}-slow.log>;
+
+$/ = "\n#";		# read entire statements using paragraph mode
+while (<>) {
+	print "[$_]\n" if $opt{v};
+	s/^#// unless %stmt;
+
+	s/\s*Time: (\d+)  Lock_time: (\d+)  Rows_sent: (\d+).*\n//;
+	my ($t, $l, $r) = ($1, $2, $3);
+
+	s/^use \w+;\n//;	# not consistently added
+	s/^SET timestamp=\d+;\n//;
+
+	s/^[ 	]*\n//mg;	# delete blank lines
+	s/^[ 	]*/  /mg;	# normalize leading whitespace
+	s/\s*;\s*(#\s*)?$//;	# remove traing semicolon(+newline-hash)
+
+	next if $opt{g} and !m/$opt{g}/i;
+
+	unless ($opt{a}) {
+		s/\b\d+\b/N/g;
+		s/\b0x[0-9A-Fa-f]+\b/N/g;
+		s/'.*?'/'S'/g;
+		s/".*?"/"S"/g;
+	}
+
+	$stmt{$_}->{c} += 1;
+	$stmt{$_}->{t} += $t;
+	$stmt{$_}->{l} += $l;
+	$stmt{$_}->{r} += $r;
+
+	warn "[$_]" if $opt{d};
+}
+
+foreach (keys %stmt) {
+	my $v = $stmt{$_} || die;
+	my ($c, $t, $l, $r) = @{ $v }{qw(c t l r)};
+	$v->{at} = $t / $c;
+	$v->{al} = $l / $c;
+	$v->{ar} = $r / $c;
+}
+
+my @sorted = sort { $stmt{$a}->{$opt{s}} <=> $stmt{$b}->{$opt{s}} } keys %stmt;
+
+foreach (@sorted) {
+	my $v = $stmt{$_} || die;
+	my ($c, $t,$at, $l,$al, $r,$ar) = @{ $v }{qw(c t at l al r ar)};
+	printf "Count: %d  Time: %.2f (%d)  Lock_time: %.2f (%d)   Rows_sent: %.1f (%d) \n%s\n\n",
+			$c, $at,$t, $al,$l, $ar,$r, $_;
+}