[PATCH 09/27] ts-unixbench-reslts: process and plot bench results

[Dario Faggioli <dario.faggioli@citrix.com>]

From: Dario Faggioli <raistlin@linux.it>

Mangle the results of a run of unixbench a bit, so that
they can be plotted. This also produces a (gnu)plot script
and the plot itself. All is saved in $stash, for the
running flight and job.


This is done in a new Osstest/Benchmarking.pm module, as
the functions introduced may turn out useful somewhere else
too.

The results are read from the original unixbench results
file and a new file, with basically a table in it is
produced. Gnuplot uses such file as data for the plotting.

A gnuplot script is produced and invoked (and saved in $stash)
rather than using the gnuplot perl binding because, this way,
one can modify the plotting commands a bit, and regen the
plot(s).

Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
---
 Osstest/Benchmarking.pm |  115 +++++++++++++++++++++++++++++++++++++++++++++++
 ts-unixbench-reslts     |   17 +++++++
 2 files changed, 132 insertions(+)
 create mode 100644 Osstest/Benchmarking.pm

diff --git a/Osstest/Benchmarking.pm b/Osstest/Benchmarking.pm
new file mode 100644
index 0000000..0c5c538
--- /dev/null
+++ b/Osstest/Benchmarking.pm
@@ -0,0 +1,115 @@
+# This is part of "osstest", an automated testing framework for Xen.
+# Copyright (C) 2009-2013 Citrix Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+package Osstest::Benchmarking;
+
+use strict;
+use warnings;
+
+use IO::File;
+use IPC::Cmd qw[can_run run];
+
+use Osstest;
+use Osstest::TestSupport;
+
+BEGIN {
+    use Exporter ();
+    our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
+    $VERSION     = 1.00;
+    @ISA         = qw(Exporter);
+    @EXPORT      = qw(unixbench_process_results
+                      unixbench_print_results
+                      unixbench_plot_results
+                      );
+    %EXPORT_TAGS = ( );
+
+    @EXPORT_OK   = qw();
+}
+
+#---------- manipulation of benchmarks results ----------
+
+sub unixbench_process_results ($$) {
+  my ($results_ref,$rfilen)= @_;
+  my $h= new IO::File "< $rfilen" or die "$!";
+
+  my $par;
+  while (<$h>) {
+    my ($bench,$val,$idx);
+    if (m/.*running ([0-9]*) parallel.*$/) {
+      $par= $1;
+    }
+    if (m/^(\S[a-zA-z0-9-\(\)\s]*)\s([0-9]+.[0-9]?)\s*([0-9]+.[0-9]?)\s*([0-9]+.[0-9]?)$/) {
+      $val= $3;
+      $idx= $4;
+      ($bench = $1) =~ s/\s+$//;
+      $$results_ref->{"$bench"}{Result}{"$par"}= $val;
+      $$results_ref->{"$bench"}{Index}{"$par"}= $idx;
+    }
+    next;
+  }
+  close($h);
+}
+
+sub unixbench_print_results ($$) {
+  my ($results,$rfilen)= @_;
+  open my $h, "|-", "tee $rfilen" or die "$!";
+
+  printf $h "%-50s","\"BENCHMARK NAME\"";
+  foreach my $i (sort keys $results->{'Double-Precision Whetstone'}{Index}) {
+    printf $h "%-15s","\"$i VCPUs\"";
+  }
+  print $h "\n";
+  foreach my $b (keys $results) {
+    printf $h "%-50s","\"$b\"";
+    foreach my $i (sort keys $results->{"$b"}{Index}) {
+      printf $h "%-15s",$results->{$b}{Index}{$i};
+    }
+    print $h "\n";
+  }
+  close($h);
+}
+
+sub unixbench_plot_results ($$$) {
+  my ($dataf,$num_cols,$pfile)= @_;
+  my $h= new IO::File "> $pfile.gp" or die "$!";
+
+  printf $h <<EOF;
+set terminal png enhanced font "/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf" 8 size 800,600
+set output '$pfile.png'
+set title 'Unixbench INDEXes for $flight.$job'
+set key outside center top horizontal noreverse noenhanced autotitles nobox
+set xtics mirror rotate by -45 out
+set style data histogram
+set style histogram cluster gap 1
+set style fill solid border lt -1
+set boxwidth 1 absolute
+set bmargin 13
+set rmargin 14
+SKIP_COL=1
+NCOL=$num_cols
+HWIDTH=1.0/(NCOL+1.0)
+plot for [c=SKIP_COL+1:SKIP_COL+NCOL] '$dataf' using c:xtic(1) with histograms title columnhead, \\
+        for [c=SKIP_COL+1:SKIP_COL+NCOL]'' every ::1 using 0:c:c with labels notitle offset first -HWIDTH*(NCOL/2.0)+HWIDTH/2.0+(c-(SKIP_COL+1))*HWIDTH, character 2 rotate by 90
+EOF
+  close($h);
+
+  my $gp= can_run('gnuplot') or return;
+  my ($ok,$err)= run( command => "$gp $pfile.gp", verbose => 1 );
+  logm("WARNING: plotting file with \"$err\"") unless $ok;
+}
+
+1;
diff --git a/ts-unixbench-reslts b/ts-unixbench-reslts
index 6e5a9a8..b480d15 100755
--- a/ts-unixbench-reslts
+++ b/ts-unixbench-reslts
@@ -21,6 +21,7 @@ use DBI;
 use IO::File;
 use POSIX;
 use Osstest::TestSupport;
+use Osstest::Benchmarking;
 
 tsreadconfig();
 
@@ -46,6 +47,8 @@ $lresfile .= (defined($r{'unixbench_run_suffix'})) ?
       $r{'unixbench_run_suffix'} : '';
 $lresfile = "unixbench$lresfile";
 
+our $results;
+
 # Unixbench stores results in a subdirectory called 'results'. The file name
 # is made up out of the box's hostname, today's date and a progressive id
 # (e.g., results/benny-2014-07-02-01).
@@ -64,4 +67,18 @@ END
       "$lresfile");
 }
 
+sub process () {
+  my $resf= "$stash/$gho->{Name}--$lresfile";
+  my $dataf= "$resf-DATA";
+  my $plotf= "$resf-PLOT";
+
+  unixbench_process_results(\$results,$resf);
+  unixbench_print_results($results,$dataf);
+
+  # For plotting we need to know the number of data columns
+  my $ncols= keys $results->{'Double-Precision Whetstone'}{Index};
+  unixbench_plot_results($dataf,$ncols,$plotf);
+}
+
 fetch();
+process();