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lhm.pl
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lhm.pl
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#!/usr/bin/perl
#
# $Id: lhm.pl,v 1.2 2014/10/29 10:54:02 oracle Exp $
#
# lhm.pl
#
# NAME
# lhm.sql - Latency Heat Map
#
# DESCRIPTION
# Perl script to plot the heat map of latency waits event in range
# of snapshot id using gnuplot for a given wait event.
#
# NOTES
# The script is divided in three parts, (1) it creates the matrix of
# latency time for a given waitevent from the dba_hist_event_histogram
# L(s,j) where s is the snap id and j is the bucket time interval
# (wait_time_milli), (2) Calcultes for each J the differential value
# between snapid and snapid+1 D(s,j)=L(s,j)-L(s-1,j) for each J,(3)
# Plot the heat map, Heatmap(D(s,j)) for each s and j
#
# UTILIZATION:
# perl ./lhm.pl --begin [first snapid] --endid [last snapid] \
# --dbid=[database id] --instance=[instance num] \
#
# AUTHOR
#
# LOG
# $Log: lhm.pl,v $
# Revision 1.2 2014/10/29 10:54:02 oracle
# *** empty log message ***
#
# Revision 1.1 2014/09/30 20:53:33 oracle
# Initial revision
#
#
use strict;
use Getopt::Long;
use POSIX;
use Tie::File;
use Term::ANSIColor;
my $bgid = 0; # Begin snasphot id
my $enid = 0; # End snapshot id
my $isid = 1; # Instance number default 1
my $dbid = 0; # Database identifier
my $evnt; # Wait event
my $ltcmtx = "./lmtx.txt"; # L(s,j)
my $delmtx = "./dmtx.txt"; # D(s,j)=L(s,j)-L(s-1,j)
my $trsmtx = "./tmtx.txt"; # Tr(D(s,j))=D(j,s)
my $gpfile = "./heatmap.gp"; # heatmap gnuplot file
my $line;
my $il; # number of columns
my $jl; # number of lines
my $cc; # counter for columns
my $cl; # counter for lines
my @vector;
my @matrix;
my $xticf; # xtic frequency
my $xticp = 12; # xtic number of point
my $font = "/usr/share/fonts/liberation/LiberationMono-Regular.ttf";
my $oracle_home = $ENV{ORACLE_HOME};
my $oracle_sid = $ENV{ORACLE_SID};
my $help;
sub usage {
print "Unknown option: @_\n" if (@_);
print "\n\n";
print "usage: perl ./lhm.pl --begin [first snapid] --end [last snapid] \n";
print " --dbid [database id] --instance [instance num] \n";
print " --wait_event \"wait event\" \n";
print "\n\n\n";
exit;
}
GetOptions(
"begin=i" => \$bgid,
"end=i" => \$enid,
"dbid=i" => \$dbid,
"event=s" => \$evnt,
"instance=i" => \$isid
);
if ( not defined $oracle_home || not defined $oracle_sid ) {
print("ORACLE_SID or ORACLE_HOME are not set\n");
exit;
}
if ( ( !-e "/usr/local/bin/gnuplot" ) || ( !-e "/usr/bin/gnuplot" ) ) {
print color 'bold red';
print colored( "Gnuplot is not installed\n", "blink" );
print color 'bold red';
print colored(
"Download gnuplot package from http://public-yum.oracle.com/\n",
"blink" );
exit;
}
qx($oracle_home/bin/sqlplus -s '/as sysdba' <<EOF
variable b1 number;
variable b2 number;
variable ev varchar2(64);
variable b3 number;
variable b4 number;
begin
:b1 := $bgid ;
:b2 := $enid ;
:ev := '$evnt';
:b3 := $dbid;
:b4 := $isid;
end;
/
spool $ltcmtx
set head off
set feed off
set line 1000
set trimspool on
set pages 0
select
snap_id,
sum (case when WAIT_TIME_MILLI=1 then WAIT_COUNT else 0 end) b1,
sum (case when WAIT_TIME_MILLI=2 then WAIT_COUNT else 0 end) b2,
sum (case when WAIT_TIME_MILLI=4 then WAIT_COUNT else 0 end) b3,
sum (case when WAIT_TIME_MILLI=8 then WAIT_COUNT else 0 end) b4,
sum (case when WAIT_TIME_MILLI=16 then WAIT_COUNT else 0 end) b5,
sum (case when WAIT_TIME_MILLI=32 then WAIT_COUNT else 0 end) b6,
sum (case when WAIT_TIME_MILLI=64 then WAIT_COUNT else 0 end) b7,
sum (case when WAIT_TIME_MILLI=128 then WAIT_COUNT else 0 end) b8,
sum (case when WAIT_TIME_MILLI=256 then WAIT_COUNT else 0 end) b9,
sum (case when WAIT_TIME_MILLI=512 then WAIT_COUNT else 0 end) b10,
sum (case when WAIT_TIME_MILLI=1024 then WAIT_COUNT else 0 end) b11,
sum (case when WAIT_TIME_MILLI=2048 then WAIT_COUNT else 0 end) b12,
sum (case when WAIT_TIME_MILLI=4096 then WAIT_COUNT else 0 end) b13,
sum (case when WAIT_TIME_MILLI=8192 then WAIT_COUNT else 0 end) b14,
sum (case when WAIT_TIME_MILLI=16384 then WAIT_COUNT else 0 end) b15,
sum (case when WAIT_TIME_MILLI=32768 then WAIT_COUNT else 0 end) b16,
sum (case when WAIT_TIME_MILLI=65536 then WAIT_COUNT else 0 end) b17,
sum (case when WAIT_TIME_MILLI=131072 then WAIT_COUNT else 0 end) b18,
sum (case when WAIT_TIME_MILLI=262144 then WAIT_COUNT else 0 end) b19,
sum (case when WAIT_TIME_MILLI=524288 then WAIT_COUNT else 0 end) b20,
sum (case when WAIT_TIME_MILLI=1048576 then WAIT_COUNT else 0 end) b21,
sum (case when WAIT_TIME_MILLI=2097152 then WAIT_COUNT else 0 end) b22,
sum (case when WAIT_TIME_MILLI=4194304 then WAIT_COUNT else 0 end) b23,
sum (case when WAIT_TIME_MILLI > 4194304 then WAIT_COUNT else 0 end) b24
from DBA_HIST_EVENT_HISTOGRAM
where event_name=:ev and dbid=:b3
and snap_id between :b1 and :b2
and instance_number = :b4
group by snap_id
order by snap_id desc
/
EOF);
open( MATRIX, $ltcmtx ) or die("Could not open file.");
foreach $line (<MATRIX>) {
#split lines in token
@vector = split( /\s+/, $line );
#get the number of column in the matrix
$il = scalar(@vector);
push( @matrix, [@vector] );
}
#get the number of rows in the matrix
$jl = scalar(@matrix);
if ( $jl == 0 || $il == 0 ) {
print "Invalid arguemnts\n";
usage();
exit;
}
printf( "database id: %i\n", $dbid );
printf( "wait event: %s\n", $evnt );
printf( "Matrix: [%ix%i] \n", $il, $jl );
printf( "snap range: [%i:%i] \n", $bgid, $enid );
printf( "instance id: %i\n", $isid );
open FMTXD, ">$delmtx";
LINE_LOOP: for ( $cl = 1 ; $cl < $jl ; $cl++ ) {
COLUMN_LOOP: for ( $cc = 2 ; $cc <= $il ; $cc++ ) {
my $delta = $matrix[ $cl - 1 ][$cc] - $matrix[$cl][$cc];
if ( $delta < 0 ) #skip negative delta (shutdown in the snapid range)
{
$delta = 0;
}
print FMTXD " $delta";
}
print FMTXD "\n";
}
close FMTXD;
# ~~ TRANSPOSE ~~
open FMTXT, ">$trsmtx";
COL_LOOP: for ( $cc = 2 ; $cc <= $il ; $cc++ ) {
LIN_LOOP: for ( $cl = 1 ; $cl < $jl ; $cl++ ) {
my $delta = $matrix[ $cl - 1 ][$cc] - $matrix[$cl][$cc];
if ( $delta < 0 ) { $delta = 0; }
printf FMTXT " $delta";
}
print FMTXT "\n";
}
close FMTXT;
open GPFILE, ">$gpfile";
if ( -e $font ) {
print GPFILE "#marker set term png font '$font' 10 size 800,600 \n";
}
else {
print GPFILE "#marker set term png size 800,600\n";
}
print GPFILE "set palette maxcolors 20 \n";
print GPFILE "set palette defined ( 0 '#ffffff', 1 '#000fff', 2 '#ee0000') \n";
print GPFILE "set cblabel \"# of waits\" \n";
print GPFILE "set border linewidth .1\n";
print GPFILE "set logscale cb \n";
print GPFILE "set label 3 at 0, 26.5 \n";
print GPFILE "set label 3 '[$evnt]\n";
print GPFILE "set label 2 at 0, 25 \n";
print GPFILE "set label 2 'range [$bgid:$enid]\\\n";
print GPFILE " dbid:$dbid inst_id:$isid ' \n";
print GPFILE "set ylabel \"latency times\" offset -4 \n";
print GPFILE "set xlabel \"snap id\" offset 0 \n";
$xticf = 1 + ( $enid - $bgid ) / $xticp;
printf GPFILE "set xtic (";
my $ind;
for ( $cl = $jl - 1 ; $cl >= 1 ; $cl-- ) {
if ( ( $matrix[$cl][1] % $xticf ) == 0 ) {
$ind = ( $jl - $cl );
print GPFILE " \"$matrix[$cl][1]\" $ind ";
if ( ( $cl - $xticf ) > 1 ) { print GPFILE ","; }
}
}
print GPFILE ")\n";
print GPFILE "set grid\n";
print GPFILE " set ytics (\"1 ms\" 1,\"2 ms\"2,\"4 ms\"3,\"8 ms\" 4,\\\n";
print GPFILE " \"16 ms\"5,\"32 ms\"6,\"64 ms\"7,\"1/8 s\"8,\"1/4 s\"9,\\\n";
print GPFILE " \"1/2 s\"10,\"1 s\"11,\"2 s\"12,\"4 s\"13,\"8 s\" 14, \\\n";
print GPFILE " \"16 s\"15 ,\"32 s\"16,\"1 m\"17,\"2 m\"18 ,\"4 m\"19,\\\n";
print GPFILE " \"8 m\"20,\"1/4 h\"21,\"1/2 h\"22,\"1h\"23,\"> 1h\"24); \n";
$evnt =~ s/ /_/g;
print GPFILE "#marker set output './latency_$evnt.jpg'\n";
print GPFILE "set view map\n";
print GPFILE "splot './tmtx.txt' matrix with image notitle\n";
qx(gnuplot -persist $gpfile & );
my @arr;
tie @arr, 'Tie::File', $gpfile;
foreach (@arr) {
s/#marker / /g;
}
qx(gnuplot $gpfile);
printf( "jpg file : latency_%s.jpg\n", $evnt );