scripts/trace.pl: Remove the tool

Tool has been broken for a while after changes to tracepoint format an
behaviour. Although I have patches somewhere to mostly fix it, it seems
that it has outlived its usefulness and could be deleted just as well.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Matthew Auld <matthew.auld@intel.com>

2 files changed, 1 insertions, 1487 deletions

diff --git a/scripts/Makefile.am b/scripts/Makefile.am
index 64171529..85d4a5cf 100644
--- a/scripts/Makefile.am
+++ b/scripts/Makefile.am
@@ -1,2 +1,2 @@
-dist_noinst_SCRIPTS = intel-gfx-trybot who.sh run-tests.sh trace.pl
+dist_noinst_SCRIPTS = intel-gfx-trybot who.sh run-tests.sh
 noinst_PYTHON = throttle.py
diff --git a/scripts/trace.pl b/scripts/trace.pl
deleted file mode 100755
index 77587f24..00000000
--- a/scripts/trace.pl
+++ /dev/null
@@ -1,1486 +0,0 @@
-#! /usr/bin/perl
-#
-# Copyright © 2017 Intel Corporation
-#
-# Permission is hereby granted, free of charge, to any person obtaining a
-# copy of this software and associated documentation files (the "Software"),
-# to deal in the Software without restriction, including without limitation
-# the rights to use, copy, modify, merge, publish, distribute, sublicense,
-# and/or sell copies of the Software, and to permit persons to whom the
-# Software is furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice (including the next
-# paragraph) shall be included in all copies or substantial portions of the
-# Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
-# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-# IN THE SOFTWARE.
-#
-
-use strict;
-use warnings;
-use 5.010;
-
-my $gid = 0;
-my (%db, %vdb, %queue, %submit, %notify, %rings, %ctxdb, %ringmap, %reqwait,
-    %ctxtimelines);
-my (%cids, %ctxmap);
-my $cid = 0;
-my %queues;
-my @freqs;
-
-use constant VENG => '255:254';
-
-my $max_requests = 1000;
-my $width_us = 32000;
-my $correct_durations = 0;
-my %ignore_ring;
-my %skip_box;
-my $html = 0;
-my $trace = 0;
-my $avg_delay_stats = 0;
-my $gpu_timeline = 0;
-my $colour_contexts = 0;
-
-my @args;
-
-sub arg_help
-{
-	return unless scalar(@_);
-
-	if ($_[0] eq '--help' or $_[0] eq '-h') {
-		shift @_;
-print <<ENDHELP;
-Notes:
-
-   The tool parse the output generated by the 'perf script' command after the
-   correct set of i915 tracepoints have been collected via perf record.
-
-   To collect the data:
-
-	./trace.pl --trace [command-to-be-profiled]
-
-   The above will invoke perf record, or alternatively it can be done directly:
-
-	perf record -a -c 1 -e i915:intel_gpu_freq_change, \
-			       i915:i915_request_add, \
-			       i915:i915_request_submit, \
-			       i915:i915_request_in, \
-			       i915:i915_request_out, \
-			       dma_fence:dma_fence_signaled, \
-			       i915:i915_request_wait_begin, \
-			       i915:i915_request_wait_end \
-			       [command-to-be-profiled]
-
-   Then create the log file with:
-
-	perf script >trace.log
-
-   This file in turn should be piped into this tool which will generate some
-   statistics out of it, or if --html was given HTML output.
-
-   HTML can be viewed from a directory containing the 'vis' JavaScript module.
-   On Ubuntu this can be installed like this:
-
-	apt-get install npm
-	npm install vis
-
-Usage:
-   trace.pl <options> <input-file >output-file
-
-      --help / -h			This help text
-      --max-items=num / -m num		Maximum number of boxes to put on the
-					timeline. More boxes means more work for
-					the JavaScript engine in the browser.
-      --zoom-width-ms=ms / -z ms	Width of the initial timeline zoom
-      --split-requests / -s		Try to split out request which were
-					submitted together due coalescing in the
-					driver. May not be 100% accurate and may
-					influence the per-engine statistics so
-					use with care.
-      --ignore-ring=id / -i id		Ignore ring with the numerical id when
-					parsing the log (enum intel_engine_id).
-					Can be given multiple times.
-      --skip-box=name / -x name		Do not put a certain type of a box on
-					the timeline. One of: queue, ready,
-					execute and ctxsave.
-					Can be given multiple times.
-      --html				Generate HTML output.
-      --trace cmd			Trace the following command.
-      --avg-delay-stats			Print average delay stats.
-      --gpu-timeline			Draw overall GPU busy timeline.
-      --colour-contexts / -c		Use different colours for different
-					context execution boxes.
-ENDHELP
-
-		exit 0;
-	}
-
-	return @_;
-}
-
-sub arg_html
-{
-	return unless scalar(@_);
-
-	if ($_[0] eq '--html') {
-		shift @_;
-		$html = 1;
-	}
-
-	return @_;
-}
-
-sub arg_avg_delay_stats
-{
-	return unless scalar(@_);
-
-	if ($_[0] eq '--avg-delay-stats') {
-		shift @_;
-		$avg_delay_stats = 1;
-	}
-
-	return @_;
-}
-
-sub arg_gpu_timeline
-{
-	return unless scalar(@_);
-
-	if ($_[0] eq '--gpu-timeline') {
-		shift @_;
-		$gpu_timeline = 1;
-	}
-
-	return @_;
-}
-
-sub arg_trace
-{
-	my @events = ( 'i915:intel_gpu_freq_change',
-		       'i915:i915_request_add',
-		       'i915:i915_request_submit',
-		       'i915:i915_request_in',
-		       'i915:i915_request_out',
-		       'dma_fence:dma_fence_signaled',
-		       'i915:i915_request_wait_begin',
-		       'i915:i915_request_wait_end' );
-
-	return unless scalar(@_);
-
-	if ($_[0] eq '--trace') {
-		shift @_;
-
-		unshift @_, '--';
-		unshift @_, join(',', @events);
-		unshift @_, ('perf', 'record', '-a', '-c', '1', '-q', '-o', 'perf.data', '-e');
-
-		exec @_;
-	}
-
-	return @_;
-}
-
-sub arg_max_requests
-{
-	my $val;
-
-	return unless scalar(@_);
-
-	if ($_[0] eq '--max-requests' or $_[0] eq '-m') {
-		shift @_;
-		$val = shift @_;
-	} elsif ($_[0] =~ /--max-requests=(\d+)/) {
-		shift @_;
-		$val = $1;
-	}
-
-	$max_requests = int($val) if defined $val;
-
-	return @_;
-}
-
-sub arg_zoom_width
-{
-	my $val;
-
-	return unless scalar(@_);
-
-	if ($_[0] eq '--zoom-width-ms' or $_[0] eq '-z') {
-		shift @_;
-		$val = shift @_;
-	} elsif ($_[0] =~ /--zoom-width-ms=(\d+)/) {
-		shift @_;
-		$val = $1;
-	}
-
-	$width_us = int($val) * 1000 if defined $val;
-
-	return @_;
-}
-
-sub arg_split_requests
-{
-	return unless scalar(@_);
-
-	if ($_[0] eq '--split-requests' or $_[0] eq '-s') {
-		shift @_;
-		$correct_durations = 1;
-	}
-
-	return @_;
-}
-
-sub arg_ignore_ring
-{
-	my $val;
-
-	return unless scalar(@_);
-
-	if ($_[0] eq '--ignore-ring' or $_[0] eq '-i') {
-		shift @_;
-		$val = shift @_;
-	} elsif ($_[0] =~ /--ignore-ring=(\d+)/) {
-		shift @_;
-		$val = $1;
-	}
-
-	$ignore_ring{$val} = 1 if defined $val;
-
-	return @_;
-}
-
-sub arg_skip_box
-{
-	my $val;
-
-	return unless scalar(@_);
-
-	if ($_[0] eq '--skip-box' or $_[0] eq '-x') {
-		shift @_;
-		$val = shift @_;
-	} elsif ($_[0] =~ /--skip-box=(\d+)/) {
-		shift @_;
-		$val = $1;
-	}
-
-	$skip_box{$val} = 1 if defined $val;
-
-	return @_;
-}
-
-sub arg_colour_contexts
-{
-	return unless scalar(@_);
-
-	if ($_[0] eq '--colour-contexts' or
-	    $_[0] eq '--color-contexts' or
-	    $_[0] eq '-c') {
-		shift @_;
-		$colour_contexts = 1;
-	}
-
-	return @_;
-}
-
-@args = @ARGV;
-while (@args) {
-	my $left = scalar(@args);
-
-	@args = arg_help(@args);
-	@args = arg_html(@args);
-	@args = arg_avg_delay_stats(@args);
-	@args = arg_gpu_timeline(@args);
-	@args = arg_trace(@args);
-	@args = arg_max_requests(@args);
-	@args = arg_zoom_width(@args);
-	@args = arg_split_requests(@args);
-	@args = arg_ignore_ring(@args);
-	@args = arg_skip_box(@args);
-	@args = arg_colour_contexts(@args);
-
-	last if $left == scalar(@args);
-}
-
-die if scalar(@args);
-
-@ARGV = @args;
-
-sub db_key
-{
-	my ($ring, $ctx, $seqno) = @_;
-
-	return $ring . '/' . $ctx . '/' . $seqno;
-}
-
-sub notify_key
-{
-	my ($ctx, $seqno) = @_;
-
-	return $ctx . '/' . $seqno;
-}
-
-sub sanitize_ctx
-{
-	my ($ctx, $ring) = @_;
-
-	if (exists $ctxdb{$ctx} and $ctxdb{$ctx} > 1) {
-		return $ctx . '.' . $ctxdb{$ctx};
-	} else {
-		return $ctx;
-	}
-}
-
-sub is_veng
-{
-	my ($class, $instance) = split ':', shift;
-
-	return $instance eq '254';
-}
-
-# Main input loop - parse lines and build the internal representation of the
-# trace using a hash of requests and some auxilliary data structures.
-my $prev_freq = 0;
-my $prev_freq_ts = 0;
-while (<>) {
-	my @fields;
-	my $tp_name;
-	my %tp;
-	my ($time, $ctx, $ring, $seqno, $orig_ctx, $key);
-
-	chomp;
-	@fields = split ' ';
-
-	chop $fields[3];
-	$time = int($fields[3] * 1000000.0 + 0.5);
-
-	$tp_name = $fields[4];
-
-	splice @fields, 0, 5;
-
-	foreach my $f (@fields) {
-		my ($k, $v);
-
-		next unless $f =~ m/=/;
-		($k, $v) = ($`, $');
-		$k = 'global' if $k eq 'global_seqno';
-		chop $v if substr($v, -1, 1) eq ',';
-		$tp{$k} = $v;
-
-		$tp{'ring'} = $tp{'engine'} if $k eq 'engine';
-	}
-
-	next if exists $tp{'ring'} and exists $ignore_ring{$tp{'ring'}};
-
-	if (exists $tp{'ring'} and exists $tp{'seqno'}) {
-		$ring = $tp{'ring'};
-		$seqno = $tp{'seqno'};
-
-		if (exists $tp{'ctx'}) {
-			$ctx = $tp{'ctx'};
-			$orig_ctx = $ctx;
-			$ctx = sanitize_ctx($ctx, $ring);
-			$ring = VENG if is_veng($ring);
-			$key = db_key($ring, $ctx, $seqno);
-		}
-	}
-
-	if ($tp_name eq 'i915:i915_request_wait_begin:') {
-		my %rw;
-
-		next if exists $reqwait{$key};
-		die if $ring eq VENG and not exists $queues{$ctx};
-
-		$rw{'key'} = $key;
-		$rw{'ring'} = $ring;
-		$rw{'seqno'} = $seqno;
-		$rw{'ctx'} = $ctx;
-		$rw{'start'} = $time;
-		$reqwait{$key} = \%rw;
-	} elsif ($tp_name eq 'i915:i915_request_wait_end:') {
-		die if $ring eq VENG and not exists $queues{$ctx};
-
-		if (exists $reqwait{$key}) {
-			$reqwait{$key}->{'end'} = $time;
-		} else { # Virtual engine
-			my $vkey = db_key(VENG, $ctx, $seqno);
-
-			die unless exists $reqwait{$vkey};
-
-			# If the wait started on the virtual engine, attribute
-			# it to it completely.
-			$reqwait{$vkey}->{'end'} = $time;
-		}
-	} elsif ($tp_name eq 'i915:i915_request_add:') {
-		if (exists $queue{$key}) {
-			$ctxdb{$orig_ctx}++;
-			$ctx = sanitize_ctx($orig_ctx, $ring);
-			$key = db_key($ring, $ctx, $seqno);
-		} else {
-			$ctxdb{$orig_ctx} = 1;
-		}
-
-		$queue{$key} = $time;
-		if ($ring eq VENG and not exists $queues{$ctx}) {
-			$queues{$ctx} = 1 ;
-			$cids{$ctx} = $cid++;
-			$ctxmap{$cids{$ctx}} = $ctx;
-		}
-	} elsif ($tp_name eq 'i915:i915_request_submit:') {
-		die if exists $submit{$key};
-		die unless exists $queue{$key};
-		die if $ring eq VENG and not exists $queues{$ctx};
-
-		$submit{$key} = $time;
-	} elsif ($tp_name eq 'i915:i915_request_in:') {
-		my ($q, $s);
-		my %req;
-
-		# preemption
-		delete $db{$key} if exists $db{$key};
-
-		unless (exists $queue{$key}) {
-			# Virtual engine
-			my $vkey = db_key(VENG, $ctx, $seqno);
-			my %req;
-
-			die unless exists $queues{$ctx};
-			die unless exists $queue{$vkey};
-			die unless exists $submit{$vkey};
-
-			# Create separate request record on the queue timeline
-			$q = $queue{$vkey};
-			$s = $submit{$vkey};
-			$req{'queue'} = $q;
-			$req{'submit'} = $s;
-			$req{'start'} = $time;
-			$req{'end'} = $time;
-			$req{'ring'} = VENG;
-			$req{'seqno'} = $seqno;
-			$req{'ctx'} = $ctx;
-			$req{'name'} = $ctx . '/' . $seqno;
-			$req{'global'} = $tp{'global'};
-			$req{'port'} = $tp{'port'};
-
-			$vdb{$vkey} = \%req;
-		} else {
-			$q = $queue{$key};
-			$s = $submit{$key};
-		}
-
-		$req{'start'} = $time;
-		$req{'ring'} = $ring;
-		$req{'seqno'} = $seqno;
-		$req{'ctx'} = $ctx;
-		$ctxtimelines{$ctx . '/' . $ring} = 1;
-		$req{'name'} = $ctx . '/' . $seqno;
-		$req{'global'} = $tp{'global'};
-		$req{'port'} = $tp{'port'};
-		$req{'queue'} = $q;
-		$req{'submit'} = $s;
-		$req{'virtual'} = 1 if exists $queues{$ctx};
-		$rings{$ring} = $gid++ unless exists $rings{$ring};
-		$ringmap{$rings{$ring}} = $ring;
-		$db{$key} = \%req;
-	} elsif ($tp_name eq 'i915:i915_request_out:') {
-		if ($tp{'completed?'}) {
-			my $nkey;
-
-			die unless exists $db{$key};
-			die unless exists $db{$key}->{'start'};
-			die if exists $db{$key}->{'end'};
-
-			$nkey = notify_key($ctx, $seqno);
-
-			$db{$key}->{'end'} = $time;
-			$db{$key}->{'notify'} = $notify{$nkey}
-						if exists $notify{$nkey};
-		} else {
-			delete $db{$key};
-		}
-	} elsif ($tp_name eq 'dma_fence:dma_fence_signaled:') {
-		my $nkey;
-
-		next unless $tp{'driver'} eq 'i915' and
-			    $tp{'timeline'} eq 'signaled';
-
-		$nkey = notify_key($tp{'context'}, $tp{'seqno'});
-
-		die if exists $notify{$nkey};
-		$notify{$nkey} = $time unless exists $notify{$nkey};
-	} elsif ($tp_name eq 'i915:intel_gpu_freq_change:') {
-		push @freqs, [$prev_freq_ts, $time, $prev_freq] if $prev_freq;
-		$prev_freq_ts = $time;
-		$prev_freq = $tp{'new_freq'};
-	}
-}
-
-# Sanitation pass to fixup up out of order notify and context complete, and to
-# find the largest seqno to be used for timeline sorting purposes.
-my $max_seqno = 0;
-foreach my $key (keys %db) {
-	my $nkey = notify_key($db{$key}->{'ctx'}, $db{$key}->{'seqno'});
-
-	die unless exists $db{$key}->{'start'};
-
-	$max_seqno = $db{$key}->{'seqno'} if $db{$key}->{'seqno'} > $max_seqno;
-
-	# Notify arrived after context complete?
-	$db{$key}->{'notify'} = $notify{$nkey} if not exists $db{$key}->{'notify'}
-						  and exists $notify{$nkey};
-
-	# No notify but we have end?
-	$db{$key}->{'notify'} = $db{$key}->{'end'} if exists $db{$key}->{'end'} and
-						      not exists $db{$key}->{'notify'};
-
-	# If user interrupt arrived out of order push it back to be no later
-	# than request out.
-	if (exists $db{$key}->{'end'} and exists $db{$key}->{'notify'} and
-	    $db{$key}->{'notify'} > $db{$key}->{'end'}) {
-		$db{$key}->{'notify'} = $db{$key}->{'end'};
-	}
-}
-
-my $key_count = scalar(keys %db);
-
-my %engine_timelines;
-
-sub sortStart {
-	my $as = $db{$a}->{'start'};
-	my $bs = $db{$b}->{'start'};
-	my $val;
-
-	$val = $as <=> $bs;
-	$val = $a cmp $b if $val == 0;
-
-	return $val;
-}
-
-sub get_engine_timeline {
-	my ($ring) = @_;
-	my @timeline;
-
-	return $engine_timelines{$ring} if exists $engine_timelines{$ring};
-
-	@timeline = grep { $db{$_}->{'ring'} eq $ring } keys %db;
-	@timeline = sort sortStart @timeline;
-	$engine_timelines{$ring} = \@timeline;
-
-	return \@timeline;
-}
-
-# Fix up coalesced requests by ending them either when the following same
-# context request with known end ends, or when a different context starts.
-foreach my $gid (sort keys %rings) {
-	my $ring = $ringmap{$rings{$gid}};
-	my $timeline = get_engine_timeline($ring);
-	my $last_complete = -1;
-	my $last_ctx = -1;
-	my $complete;
-
-	foreach my $pos (0..$#{$timeline}) {
-		my $key = @{$timeline}[$pos];
-		my ($ctx, $end);
-
-		next if exists $db{$key}->{'end'};
-
-		$db{$key}->{'no-end'} = 1;
-		$ctx = $db{$key}->{'ctx'};
-
-		if ($pos > $last_complete or $ctx != $last_ctx) {
-			my $next = $pos;
-
-			undef $complete;
-
-			while ($next < $#{$timeline}) {
-				my $next_key = ${$timeline}[++$next];
-				if ($ctx == $db{$next_key}->{'ctx'} and
-				    exists $db{$next_key}->{'end'}) {
-					$last_ctx = $db{$next_key}->{'ctx'};
-					$last_complete = $next;
-					$complete = $next_key;
-					last;
-				}
-			}
-		}
-
-		if (defined $complete) {
-			if ($ctx == $db{$complete}->{'ctx'}) {
-				$end = $db{$complete}->{'end'};
-			} else {
-				$end = $db{$complete}->{'start'};
-			}
-		} else {
-			# No next submission. Use notify if available or give up.
-			if (exists $db{$key}->{'notify'}) {
-				$end = $db{$key}->{'notify'};
-			} else {
-				$end = $db{$key}->{'start'};
-				$db{$key}->{'incomplete'} = 1;
-			}
-		}
-
-		unless (exists $db{$key}->{'notify'}) {
-			$db{$key}->{'notify'} = $end;
-			$db{$key}->{'no-notify'} = 1;
-		}
-		$db{$key}->{'end'} = $end;
-		$db{$key}->{'notify'} = $end if $db{$key}->{'notify'} > $end;
-	}
-}
-
-my $re_sort = 1;
-my @sorted_keys;
-
-sub maybe_sort_keys
-{
-	if ($re_sort) {
-		@sorted_keys = sort sortStart keys %db;
-		$re_sort = 0;
-		die "Database changed size?!" unless scalar(@sorted_keys) ==
-						     $key_count;
-	}
-}
-
-maybe_sort_keys();
-
-my %ctx_timelines;
-
-sub sortContext {
-	my $as = $db{$a}->{'seqno'};
-	my $bs = $db{$b}->{'seqno'};
-	my $val;
-
-	$val = $as <=> $bs;
-
-	die if $val == 0;
-
-	return $val;
-}
-
-sub get_ctx_timeline {
-	my ($ctx, $ring, $key) = @_;
-	my @timeline;
-
-	return $ctx_timelines{$key} if exists $ctx_timelines{$key};
-
-	@timeline = grep { $db{$_}->{'ring'} eq $ring and
-			   $db{$_}->{'ctx'} == $ctx } @sorted_keys;
-	# FIXME seqno restart
-	@timeline = sort sortContext @timeline;
-
-	$ctx_timelines{$key} = \@timeline;
-
-	return \@timeline;
-}
-
-# Split out merged batches if requested.
-if ($correct_durations) {
-	# Shift !port0 requests start time to after the previous context on the
-	# same timeline has finished.
-	foreach my $gid (sort keys %rings) {
-		my $ring = $ringmap{$rings{$gid}};
-		my $timeline = get_engine_timeline($ring);
-		my $complete;
-
-		foreach my $pos (0..$#{$timeline}) {
-			my $key = @{$timeline}[$pos];
-			my $prev = $complete;
-			my $pkey;
-
-			$complete = $key unless exists $db{$key}->{'no-end'};
-			$pkey = $complete;
-
-			next if $db{$key}->{'port'} == 0;
-
-			$pkey = $prev if $complete eq $key;
-
-			die unless defined $pkey;
-
-			$db{$key}->{'start'} = $db{$pkey}->{'end'};
-			$db{$key}->{'start'} = $db{$pkey}->{'notify'} if $db{$key}->{'start'} > $db{$key}->{'end'};
-
-			die if $db{$key}->{'start'} > $db{$key}->{'end'};
-
-			$re_sort = 1;
-		}
-	}
-
-	maybe_sort_keys();
-
-	# Batch with no-end (no request_out) means it was submitted as part of
-	# coalesced context. This means it's start time should be set to the end
-	# time of a following request on this context timeline.
-	foreach my $tkey (sort keys %ctxtimelines) {
-		my ($ctx, $ring) = split '/', $tkey;
-		my $timeline = get_ctx_timeline($ctx, $ring, $tkey);
-		my $last_complete = -1;
-		my $complete;
-
-		foreach my $pos (0..$#{$timeline}) {
-			my $key = @{$timeline}[$pos];
-			my $next_key;
-
-			next unless exists $db{$key}->{'no-end'};
-			last if $pos == $#{$timeline};
-
-			# Shift following request to start after the current
-			# one, but only if that wouldn't make it zero duration,
-			# which would indicate notify arrived after context
-			# complete.
-			$next_key = ${$timeline}[$pos + 1];
-			if (exists $db{$key}->{'notify'} and
-			    $db{$key}->{'notify'} < $db{$key}->{'end'}) {
-				$db{$next_key}->{'engine-start'} = $db{$next_key}->{'start'};
-				$db{$next_key}->{'start'} = $db{$key}->{'notify'};
-				$re_sort = 1;
-			}
-		}
-	}
-}
-
-maybe_sort_keys();
-
-# GPU time accounting
-my (%running, %runnable, %queued, %batch_avg, %batch_total_avg, %batch_count);
-my (%submit_avg, %execute_avg, %ctxsave_avg);
-
-my $last_ts = 0;
-my $first_ts;
-my $min_ctx;
-
-foreach my $key (@sorted_keys) {
-	my $ring = $db{$key}->{'ring'};
-	my $end = $db{$key}->{'end'};
-	my $start = $db{$key}->{'start'};
-	my $engine_start = $db{$key}->{'engine_start'};
-	my $notify = $db{$key}->{'notify'};
-
-	$first_ts = $db{$key}->{'queue'} if not defined $first_ts or $db{$key}->{'queue'} < $first_ts;
-	$last_ts = $end if $end > $last_ts;
-	$min_ctx = $db{$key}->{'ctx'} if not defined $min_ctx or
-					 $db{$key}->{'ctx'} < $min_ctx;
-
-	unless (exists $db{$key}->{'no-end'}) {
-		$db{$key}->{'context-complete-delay'} = $end - $notify;
-	} else {
-		$db{$key}->{'context-complete-delay'} = 0;
-	}
-
-	$engine_start = $db{$key}->{'start'} unless defined $engine_start;
-	$db{$key}->{'execute-delay'} = $engine_start - $db{$key}->{'submit'};
-	$db{$key}->{'submit-delay'} = $db{$key}->{'submit'} - $db{$key}->{'queue'};
-	unless (exists $db{$key}->{'no-notify'}) {
-		$db{$key}->{'duration'} = $notify - $start;
-	} else {
-		$db{$key}->{'duration'} = 0;
-	}
-
-	$running{$ring} += $end - $start if $correct_durations or
-					    not exists $db{$key}->{'no-end'};
-	unless (exists $db{$key}->{'virtual'}) {
-		$runnable{$ring} += $db{$key}->{'execute-delay'};
-		$queued{$ring} += $start - $db{$key}->{'execute-delay'} - $db{$key}->{'queue'};
-	}
-
-	$batch_count{$ring}++;
-
-	$batch_avg{$ring} += $db{$key}->{'duration'};
-	$batch_total_avg{$ring} += $end - $start;
-
-	$submit_avg{$ring} += $db{$key}->{'submit-delay'};
-	$execute_avg{$ring} += $db{$key}->{'execute-delay'};
-	$ctxsave_avg{$ring} += $db{$key}->{'context-complete-delay'};
-}
-
-foreach my $ring (sort keys %batch_avg) {
-	$batch_avg{$ring} /= $batch_count{$ring};
-	$batch_total_avg{$ring} /= $batch_count{$ring};
-	$submit_avg{$ring} /= $batch_count{$ring};
-	$execute_avg{$ring} /= $batch_count{$ring};
-	$ctxsave_avg{$ring} /= $batch_count{$ring};
-}
-
-# Calculate engine idle time
-my %flat_busy;
-foreach my $gid (sort keys %rings) {
-	my $ring = $ringmap{$rings{$gid}};
-	my (@s_, @e_);
-
-	# Extract all GPU busy intervals and sort them.
-	foreach my $key (@sorted_keys) {
-		next unless $db{$key}->{'ring'} eq $ring;
-		die if $db{$key}->{'start'} > $db{$key}->{'end'};
-		push @s_, $db{$key}->{'start'};
-		push @e_, $db{$key}->{'end'};
-	}
-
-	die unless $#s_ == $#e_;
-
-	# Flatten the intervals.
-	for my $i (1..$#s_) {
-		last if $i >= @s_; # End of array.
-		die if $e_[$i] < $s_[$i];
-		if ($s_[$i] <= $e_[$i - 1]) {
-			# Current entry overlaps with the previous one. We need
-			# to merge end of the previous interval from the list
-			# with the start of the current one.
-			if ($e_[$i] >= $e_[$i - 1]) {
-				splice @e_, $i - 1, 1;
-			} else {
-				splice @e_, $i, 1;
-			}
-			splice @s_, $i, 1;
-			# Continue with the same element when list got squashed.
-			redo;
-		}
-	}
-
-	# Add up all busy times.
-	my $total = 0;
-	for my $i (0..$#s_) {
-		die if $e_[$i] < $s_[$i];
-
-		$total = $total + ($e_[$i] - $s_[$i]);
-	}
-
-	$flat_busy{$ring} = $total;
-}
-
-# Calculate overall GPU idle time
-my @gpu_intervals;
-my (@s_, @e_);
-
-# Extract all GPU busy intervals and sort them.
-foreach my $key (@sorted_keys) {
-	push @s_, $db{$key}->{'start'};
-	push @e_, $db{$key}->{'end'};
-	die if $db{$key}->{'start'} > $db{$key}->{'end'};
-}
-
-die unless $#s_ == $#e_;
-
-# Flatten the intervals (copy & paste of the flattening loop above)
-for my $i (1..$#s_) {
-	last if $i >= @s_;
-	die if $e_[$i] < $s_[$i];
-	die if $s_[$i] < $s_[$i - 1];
-	if ($s_[$i] <= $e_[$i - 1]) {
-		if ($e_[$i] >= $e_[$i - 1]) {
-			splice @e_, $i - 1, 1;
-		} else {
-			splice @e_, $i, 1;
-		}
-		splice @s_, $i, 1;
-		redo;
-	}
-}
-
-# Add up all busy times.
-my $total = 0;
-for my $i (0..$#s_) {
-	die if $e_[$i] < $s_[$i];
-
-	$total = $total + ($e_[$i] - $s_[$i]);
-}
-
-# Generate data for the GPU timeline if requested
-if ($gpu_timeline) {
-	for my $i (0..$#s_) {
-		push @gpu_intervals, [ $s_[$i], $e_[$i] ];
-	}
-}
-
-$flat_busy{'gpu-busy'} = $total / ($last_ts - $first_ts) * 100.0;
-$flat_busy{'gpu-idle'} = (1.0 - $total / ($last_ts - $first_ts)) * 100.0;
-
-# Add up all request waits per engine
-my %reqw;
-foreach my $key (keys %reqwait) {
-	$reqw{$reqwait{$key}->{'ring'}} += $reqwait{$key}->{'end'} - $reqwait{$key}->{'start'};
-}
-
-# Add up all request waits per virtual engine
-my %vreqw;
-foreach my $key (keys %reqwait) {
-	$vreqw{$reqwait{$key}->{'ctx'}} += $reqwait{$key}->{'end'} - $reqwait{$key}->{'start'};
-}
-
-say sprintf('GPU: %.2f%% idle, %.2f%% busy',
-	     $flat_busy{'gpu-idle'}, $flat_busy{'gpu-busy'}) unless $html;
-
-my $timeline_text = $colour_contexts ?
-		    'per context coloured shading like' : 'box shading like';
-
-my %ctx_colours;
-my $ctx_table;
-
-sub generate_ctx_table
-{
-	my @states = ('queue', 'ready', 'execute', 'ctxsave', 'incomplete');
-	my $max_show = 6;
-	my (@ctxts, @disp_ctxts);
-	my $step;
-
-	if( $colour_contexts ) {
-		@ctxts = sort keys %ctxdb;
-	} else {
-		@ctxts = ($min_ctx);
-	}
-
-	# Limit number of shown context examples
-	$step = int(scalar(@ctxts) / $max_show);
-	if ($step) {
-		foreach my $i (0..$#ctxts) {
-			push @disp_ctxts, $ctxts[$i] unless $i % $step;
-			last if scalar(@disp_ctxts) == $max_show;
-		}
-	} else {
-		@disp_ctxts = @ctxts;
-	}
-
-	$ctx_table .= '<table>';
-
-	foreach my $ctx (@disp_ctxts) {
-		$ctx_table .= "<tr>\n";
-		$ctx_table .= "  <td>Context $ctx</td>\n" if $colour_contexts;
-		foreach my $state (@states) {
-			$ctx_table .= "  <td align='center' valign='middle'><div style='" . box_style($ctx, $state) . " padding-top: 6px; padding-bottom: 6px; padding-left: 6x; padding-right: 6px;'>" . uc($state) . "</div></td>\n";
-		}
-		$ctx_table .= "</tr>\n";
-	}
-
-	$ctx_table .= '</table>';
-}
-
-sub generate_ctx_colours
-{
-	my $num_ctx = keys %ctxdb;
-	my $i = 0;
-
-	foreach my $ctx (sort keys %ctxdb) {
-		$ctx_colours{$ctx} = int(360 / $num_ctx * $i++);
-	}
-}
-
-
-generate_ctx_colours() if $html and $colour_contexts;
-generate_ctx_table() if $html;
-
-print <<ENDHTML if $html;
-<!DOCTYPE HTML>
-<html>
-<head>
-  <title>i915 GT timeline</title>
-
-  <style type="text/css">
-    body, html {
-      font-family: sans-serif;
-    }
-  </style>
-
-  <script src="node_modules/vis/dist/vis.js"></script>
-  <link href="node_modules/vis//dist/vis.css" rel="stylesheet" type="text/css" />
-</head>
-<body>
-<p>
-<b>Timeline request view is $timeline_text:</b>
-<table>
-<tr>
-<td>
-$ctx_table
-</td>
-<td>
-QUEUE = requests executing on the GPU<br>
-READY = runnable requests waiting for a slot on GPU<br>
-EXECUTE = requests waiting on fences and dependencies before they are runnable<br>
-CTXSAVE = GPU saving the context image<br>
-INCOMPLETE = request of unknown completion time
-<p>
-Boxes are in format 'ctx-id/seqno'.
-</p>
-<p>
-Use Ctrl+scroll-action to zoom-in/out and scroll-action or dragging to move around the timeline.
-</p>
-<button onclick="toggleStacking()">Toggle overlap stacking</button>
-</td>
-</tr>
-</table>
-<p>
-<b>GPU idle: $flat_busy{'gpu-idle'}%</b>
-<br>
-<b>GPU busy: $flat_busy{'gpu-busy'}%</b>
-</p>
-<div id="visualization"></div>
-
-<script type="text/javascript">
-  var container = document.getElementById('visualization');
-
-  var groups = new vis.DataSet([
-ENDHTML
-
-#   var groups = new vis.DataSet([
-# 	{id: 1, content: 'g0'},
-# 	{id: 2, content: 'g1'}
-#   ]);
-
-sub html_stats
-{
-	my ($stats, $group, $id) = @_;
-	my $veng = exists $stats->{'virtual'} ? 1 : 0;
-	my $name;
-
-	$name = $veng ? 'Virtual' : 'Ring';
-	$name .= $group;
-	$name .= '<br><small><br>';
-	unless ($veng) {
-		$name .= sprintf('%.2f', $stats->{'idle'}) . '% idle<br><br>';
-		$name .= sprintf('%.2f', $stats->{'busy'}) . '% busy<br>';
-	}
-	$name .= sprintf('%.2f', $stats->{'runnable'}) . '% runnable<br>';
-	$name .= sprintf('%.2f', $stats->{'queued'}) . '% queued<br><br>';
-	$name .= sprintf('%.2f', $stats->{'wait'}) . '% wait<br><br>';
-	$name .= $stats->{'count'} . ' batches<br>';
-	unless ($veng) {
-		$name .= sprintf('%.2f', $stats->{'avg'}) . 'us avg batch<br>';
-		$name .= sprintf('%.2f', $stats->{'total-avg'}) . 'us avg engine batch<br>';
-	}
-	$name .= '</small>';
-
-	print "\t{id: $id, content: '$name'},\n";
-}
-
-sub stdio_stats
-{
-	my ($stats, $group, $id) = @_;
-	my $veng = exists $stats->{'virtual'} ? 1 : 0;
-	my $str;
-
-	$str = $veng ? 'Virtual' : 'Ring';
-	$str .= $group . ': ';
-	$str .= $stats->{'count'} . ' batches, ';
-	unless ($veng) {
-		$str .= sprintf('%.2f (%.2f) avg batch us, ',
-				$stats->{'avg'}, $stats->{'total-avg'});
-		$str .= sprintf('%.2f', $stats->{'idle'}) . '% idle, ';
-		$str .= sprintf('%.2f', $stats->{'busy'}) . '% busy, ';
-	}
-
-	$str .= sprintf('%.2f', $stats->{'runnable'}) . '% runnable, ';
-	$str .= sprintf('%.2f', $stats->{'queued'}) . '% queued, ';
-	$str .= sprintf('%.2f', $stats->{'wait'}) . '% wait';
-
-	if ($avg_delay_stats and not $veng) {
-		$str .= ', submit/execute/save-avg=(';
-		$str .= sprintf('%.2f/%.2f/%.2f)', $stats->{'submit'}, $stats->{'execute'}, $stats->{'save'});
-	}
-
-	say $str;
-}
-
-print "\t{id: 0, content: 'Freq'},\n" if $html;
-print "\t{id: 1, content: 'GPU'},\n" if $gpu_timeline;
-
-my $engine_start_id = $gpu_timeline ? 2 : 1;
-
-foreach my $group (sort keys %rings) {
-	my $name;
-	my $ring = $ringmap{$rings{$group}};
-	my $id = $engine_start_id + $rings{$group};
-	my $elapsed = $last_ts - $first_ts;
-	my %stats;
-
-	$stats{'idle'} = (1.0 - $flat_busy{$ring} / $elapsed) * 100.0;
-	$stats{'busy'} = $running{$ring} / $elapsed * 100.0;
-	if (exists $runnable{$ring}) {
-		$stats{'runnable'} = $runnable{$ring} / $elapsed * 100.0;
-	} else {
-		$stats{'runnable'} = 0;
-	}
-	if (exists $queued{$ring}) {
-		$stats{'queued'} = $queued{$ring} / $elapsed * 100.0;
-	} else {
-		$stats{'queued'} = 0;
-	}
-	$reqw{$ring} = 0 unless exists $reqw{$ring};
-	$stats{'wait'} = $reqw{$ring} / $elapsed * 100.0;
-	$stats{'count'} = $batch_count{$ring};
-	$stats{'avg'} = $batch_avg{$ring};
-	$stats{'total-avg'} = $batch_total_avg{$ring};
-	$stats{'submit'} = $submit_avg{$ring};
-	$stats{'execute'} = $execute_avg{$ring};
-	$stats{'save'} = $ctxsave_avg{$ring};
-
-	if ($html) {
-		html_stats(\%stats, $group, $id);
-	} else {
-		stdio_stats(\%stats, $group, $id);
-	}
-}
-
-sub sortVQueue {
-	my $as = $vdb{$a}->{'queue'};
-	my $bs = $vdb{$b}->{'queue'};
-	my $val;
-
-	$val = $as <=> $bs;
-	$val = $a cmp $b if $val == 0;
-
-	return $val;
-}
-
-my @sorted_vkeys = sort sortVQueue keys %vdb;
-my (%vqueued, %vrunnable);
-
-foreach my $key (@sorted_vkeys) {
-	my $ctx = $vdb{$key}->{'ctx'};
-
-	$vdb{$key}->{'submit-delay'} = $vdb{$key}->{'submit'} - $vdb{$key}->{'queue'};
-	$vdb{$key}->{'execute-delay'} = $vdb{$key}->{'start'} - $vdb{$key}->{'submit'};
-
-	$vqueued{$ctx} += $vdb{$key}->{'submit-delay'};
-	$vrunnable{$ctx} += $vdb{$key}->{'execute-delay'};
-}
-
-my $veng_id = $engine_start_id + scalar(keys %rings);
-
-foreach my $cid (sort keys %ctxmap) {
-	my $ctx = $ctxmap{$cid};
-	my $elapsed = $last_ts - $first_ts;
-	my %stats;
-
-	$stats{'virtual'} = 1;
-	if (exists $vrunnable{$ctx}) {
-		$stats{'runnable'} = $vrunnable{$ctx} / $elapsed * 100.0;
-	} else {
-		$stats{'runnable'} = 0;
-	}
-	if (exists $vqueued{$ctx}) {
-		$stats{'queued'} = $vqueued{$ctx} / $elapsed * 100.0;
-	} else {
-		$stats{'queued'} = 0;
-	}
-	$vreqw{$ctx} = 0 unless exists $vreqw{$ctx};
-	$stats{'wait'} = $vreqw{$ctx} / $elapsed * 100.0;
-	$stats{'count'} = scalar(grep {$ctx == $vdb{$_}->{'ctx'}} keys %vdb);
-
-	if ($html) {
-		html_stats(\%stats, $cid, $veng_id++);
-	} else {
-		stdio_stats(\%stats, $cid, $veng_id++);
-	}
-}
-
-exit 0 unless $html;
-
-print <<ENDHTML;
-  ]);
-
-  var items = new vis.DataSet([
-ENDHTML
-
-sub sortQueue {
-	my $as = $db{$a}->{'queue'};
-	my $bs = $db{$b}->{'queue'};
-	my $val;
-
-	$val = $as <=> $bs;
-	$val = $a cmp $b if $val == 0;
-
-	return $val;
-}
-
-sub ctx_colour
-{
-	my ($ctx, $stage, $lfac) = (@_);
-	my ($s, $l);
-	my $val;
-
-	unless ($colour_contexts) {
-		if ($stage eq 'queue') {
-			$val = 210;
-			$s = 65;
-			$l = 52;
-		} elsif ($stage eq 'ready') {
-			$val = 0;
-			$s = 0;
-			$l = 47;
-		} elsif ($stage eq 'execute') {
-			$val = 346;
-			$s = 68;
-			$l = 65;
-		} elsif ($stage eq 'ctxsave') {
-			$val = 26;
-			$s = 90;
-			$l = 52;
-		} elsif ($stage eq 'incomplete') {
-			$val = 0;
-			$s = 85;
-			$l = 50;
-		}
-	} else {
-		if ($stage eq 'queue') {
-			$s = 35;
-			$l = 85;
-		} elsif ($stage eq 'ready') {
-			$s = 35;
-			$l = 45;
-		} elsif ($stage eq 'execute') {
-			$s = 80;
-			$l = 65;
-		} elsif ($stage eq 'ctxsave') {
-			$s = 75;
-			$l = 70;
-		} elsif ($stage eq 'incomplete') {
-			$s = 80;
-			$l = 25;
-		}
-
-		$val = $ctx_colours{$ctx};
-	}
-
-	$l = int($l * $lfac);
-
-	return "hsl($val, $s%, $l%)";
-}
-
-sub box_style
-{
-	my ($ctx, $stage) = @_;
-	my $deg;
-	my $text_col = 'white';
-
-	if ($stage eq 'queue') {
-		$deg = 90;
-		$text_col = 'black' if $colour_contexts;
-	} elsif ($stage eq 'ready') {
-		$deg = 45;
-	} elsif ($stage eq 'execute') {
-		$deg = 0;
-		$text_col = 'black' if $colour_contexts;
-	} elsif ($stage eq 'ctxsave') {
-		$deg = 105;
-		$text_col = 'black' if $colour_contexts;
-	} elsif ($stage eq 'incomplete') {
-		$deg = 0;
-	}
-
-	return "color: $text_col; background: repeating-linear-gradient(" .
-		$deg . 'deg, ' .
-		ctx_colour($ctx, $stage, 1.0) . ', ' .
-		ctx_colour($ctx, $stage, 1.0) . ' 10px, ' .
-		ctx_colour($ctx, $stage, 0.90) . ' 10px, ' .
-		ctx_colour($ctx, $stage, 0.90) . ' 20px);';
-}
-
-my $i = 0;
-my $req = 0;
-foreach my $key (sort sortQueue keys %db) {
-	my ($name, $ctx, $seqno) = ($db{$key}->{'name'}, $db{$key}->{'ctx'}, $db{$key}->{'seqno'});
-	my ($queue, $start, $notify, $end) = ($db{$key}->{'queue'}, $db{$key}->{'start'}, $db{$key}->{'notify'}, $db{$key}->{'end'});
-	my $engine_start = $db{$key}->{'engine-start'};
-	my $submit = $queue + $db{$key}->{'submit-delay'};
-	my ($content, $style);
-	my $group = $engine_start_id + $rings{$db{$key}->{'ring'}};
-	my $subgroup = $ctx - $min_ctx;
-	my $type = ' type: \'range\',';
-	my $startend;
-	my $skey;
-
-	# submit to execute
-	unless (exists $skip_box{'queue'} or exists $db{$key}->{'virtual'}) {
-		$skey = 2 * $max_seqno * $ctx + 2 * $seqno;
-		$style = box_style($ctx, 'queue');
-		$content = "$name<br>$db{$key}->{'submit-delay'}us <small>($db{$key}->{'execute-delay'}us)</small>";
-		$startend = 'start: ' . $queue . ', end: ' . $submit;
-		print "\t{id: $i, key: $skey, $type group: $group, subgroup: $subgroup, subgroupOrder: $subgroup, content: '$content', $startend, style: \'$style\'},\n";
-		$i++;
-	}
-
-	# execute to start
-	$engine_start = $db{$key}->{'start'} unless defined $engine_start;
-	unless (exists $skip_box{'ready'} or exists $db{$key}->{'virtual'}) {
-		$skey = 2 * $max_seqno * $ctx + 2 * $seqno + 1;
-		$style = box_style($ctx, 'ready');
-		$content = "<small>$name<br>$db{$key}->{'execute-delay'}us</small>";
-		$startend = 'start: ' . $submit . ', end: ' . $engine_start;
-		print "\t{id: $i, key: $skey, $type group: $group, subgroup: $subgroup, subgroupOrder: $subgroup, content: '$content', $startend, style: \'$style\'},\n";
-		$i++;
-	}
-
-	# start to user interrupt
-	unless (exists $skip_box{'execute'}) {
-		$skey = -2 * $max_seqno * $ctx - 2 * $seqno - 1;
-		$style = box_style($ctx,
-				   exists $db{$key}->{'incomplete'} ?
-				   'incomplete' : 'execute');
-		$content = "$name <small>$db{$key}->{'port'}</small>";
-		$content .= ' <small><i>???</i></small> ' if exists $db{$key}->{'incomplete'};
-		$content .= ' <small><i>++</i></small> ' if exists $db{$key}->{'no-end'};
-		$content .= ' <small><i>+</i></small> ' if exists $db{$key}->{'no-notify'};
-		$content .= "<br>$db{$key}->{'duration'}us <small>($db{$key}->{'context-complete-delay'}us)</small>";
-		$startend = 'start: ' . $start . ', end: ' . $notify;
-		print "\t{id: $i, key: $skey, $type group: $group, subgroup: $subgroup, subgroupOrder: $subgroup, content: '$content', $startend, style: \'$style\'},\n";
-		$i++;
-	}
-
-	# user interrupt to context complete
-	unless (exists $skip_box{'ctxsave'} or exists $db{$key}->{'no-end'}) {
-		$skey = -2 * $max_seqno * $ctx - 2 * $seqno;
-		$style = box_style($ctx, 'ctxsave');
-		my $ctxsave = $db{$key}->{'end'} - $db{$key}->{'notify'};
-		$content = "<small>$name<br>${ctxsave}us</small>";
-		$content .= ' <small><i>???</i></small> ' if exists $db{$key}->{'incomplete'};
-		$content .= ' <small><i>++</i></small> ' if exists $db{$key}->{'no-end'};
-		$content .= ' <small><i>+</i></small> ' if exists $db{$key}->{'no-notify'};
-		$startend = 'start: ' . $notify . ', end: ' . $end;
-		print "\t{id: $i, key: $skey, $type group: $group, subgroup: $subgroup, subgroupOrder: $subgroup, content: '$content', $startend, style: \'$style\'},\n";
-		$i++;
-	}
-
-	$last_ts = $end;
-
-	last if ++$req > $max_requests;
-}
-
-push @freqs, [$prev_freq_ts, $last_ts, $prev_freq] if $prev_freq;
-
-foreach my $item (@freqs) {
-	my ($start, $end, $freq) = @$item;
-	my $startend;
-
-	next if $start > $last_ts;
-
-	$start = $first_ts if $start < $first_ts;
-	$end = $last_ts if $end > $last_ts;
-	$startend = 'start: ' . $start . ', end: ' . $end;
-	print "\t{id: $i, type: 'range', group: 0, content: '$freq', $startend},\n";
-	$i++;
-}
-
-if ($gpu_timeline) {
-	foreach my $item (@gpu_intervals) {
-		my ($start, $end) = @$item;
-		my $startend;
-
-		next if $start > $last_ts;
-
-		$start = $first_ts if $start < $first_ts;
-		$end = $last_ts if $end > $last_ts;
-		$startend = 'start: ' . $start . ', end: ' . $end;
-		print "\t{id: $i, type: 'range', group: 1, $startend},\n";
-		$i++;
-	}
-}
-
-$req = 0;
-$veng_id = $engine_start_id + scalar(keys %rings);
-foreach my $key (@sorted_vkeys) {
-	my ($name, $ctx, $seqno) = ($vdb{$key}->{'name'}, $vdb{$key}->{'ctx'}, $vdb{$key}->{'seqno'});
-	my $queue = $vdb{$key}->{'queue'};
-	my $submit = $vdb{$key}->{'submit'};
-	my $engine_start = $db{$key}->{'engine-start'};
-	my ($content, $style, $startend, $skey);
-	my $group = $veng_id + $cids{$ctx};
-	my $subgroup = $ctx - $min_ctx;
-	my $type = ' type: \'range\',';
-	my $duration;
-
-	# submit to execute
-	unless (exists $skip_box{'queue'}) {
-		$skey = 2 * $max_seqno * $ctx + 2 * $seqno;
-		$style = box_style($ctx, 'queue');
-		$content = "$name<br>$vdb{$key}->{'submit-delay'}us <small>($vdb{$key}->{'execute-delay'}us)</small>";
-		$startend = 'start: ' . $queue . ', end: ' . $submit;
-		print "\t{id: $i, key: $skey, $type group: $group, subgroup: $subgroup, subgroupOrder: $subgroup, content: '$content', $startend, style: \'$style\'},\n";
-		$i++;
-	}
-
-	# execute to start
-	$engine_start = $vdb{$key}->{'start'} unless defined $engine_start;
-	unless (exists $skip_box{'ready'}) {
-		$skey = 2 * $max_seqno * $ctx + 2 * $seqno + 1;
-		$style = box_style($ctx, 'ready');
-		$content = "<small>$name<br>$vdb{$key}->{'execute-delay'}us</small>";
-		$startend = 'start: ' . $submit . ', end: ' . $engine_start;
-		print "\t{id: $i, key: $skey, $type group: $group, subgroup: $subgroup, subgroupOrder: $subgroup, content: '$content', $startend, style: \'$style\'},\n";
-		$i++;
-	}
-
-	last if ++$req > $max_requests;
-}
-
-my $end_ts = $first_ts + $width_us;
-$first_ts = $first_ts;
-
-print <<ENDHTML;
-  ]);
-
-  function majorAxis(date, scale, step) {
-	var s = date / 1000000;
-	var precision;
-
-	if (scale == 'millisecond')
-		precision = 6;
-	else if (scale == 'second')
-		precision = 3;
-	else
-		precision = 0;
-
-	return s.toFixed(precision) + "s";
-  }
-
-  function minorAxis(date, scale, step) {
-	var t = date;
-	var precision;
-	var unit;
-
-	if (scale == 'millisecond') {
-		t %= 1000;
-		precision = 0;
-		unit = 'us';
-	} else if (scale == 'second') {
-		t /= 1000;
-		t %= 1000;
-		precision = 0;
-		unit = 'ms';
-	} else {
-		t /= 1000000;
-		precision = 1;
-		unit = 's';
-	}
-
-	return t.toFixed(precision) + unit;
-  }
-
-  // Configuration for the Timeline
-  var options = { groupOrder: 'content',
-		  horizontalScroll: true,
-		  stack: false,
-		  stackSubgroups: false,
-		  zoomKey: 'ctrlKey',
-		  orientation: 'top',
-		  format: { majorLabels: majorAxis, minorLabels: minorAxis },
-		  start: $first_ts,
-		  end: $end_ts};
-
-  // Create a Timeline
-  var timeline = new vis.Timeline(container, items, groups, options);
-
-  function toggleStacking() {
-	options.stack = !options.stack;
-	options.stackSubgroups = !options.stackSubgroups;
-	timeline.setOptions(options);
-  }
-ENDHTML
-
-print <<ENDHTML;
-</script>
-</body>
-</html>
-ENDHTML