Profile of duplicating lots of regions.

git-svn-id: svn://localhost/ardour2/branches/3.0@12750 d708f5d6-7413-0410-9779-e7cbd77b26cf

6 files changed, 429 insertions, 0 deletions

diff --git a/libs/ardour/test/profiling/lots_of_regions.cc b/libs/ardour/test/profiling/lots_of_regions.cc
new file mode 100644
index 0000000000..51166265bf
--- /dev/null
+++ b/libs/ardour/test/profiling/lots_of_regions.cc
@@ -0,0 +1,47 @@
+#include "test_util.h"
+#include "ardour/ardour.h"
+#include "ardour/midi_track.h"
+#include "ardour/midi_region.h"
+#include "ardour/session.h"
+#include "ardour/playlist.h"
+#include "pbd/stateful_diff_command.h"
+
+using namespace std;
+using namespace ARDOUR;
+using namespace PBD;
+
+int
+main (int argc, char* argv[])
+{
+	ARDOUR::init (false, true);
+	Session* session = load_session ("../libs/ardour/test/profiling/sessions/1region", "1region.ardour");
+
+	/* Find the track */
+	boost::shared_ptr<MidiTrack> track = boost::dynamic_pointer_cast<MidiTrack> (session->get_routes()->back());
+	assert (track);
+
+	/* And the playlist */
+	boost::shared_ptr<Playlist> playlist = track->playlist ();
+	assert (playlist);
+
+	/* And the region */
+	boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (playlist->region_list().rlist().front());
+	assert (region);
+
+	/* Duplicate it a lot */
+	session->begin_reversible_command ("foo");
+	playlist->clear_changes ();
+	playlist->duplicate (region, region->last_frame(), 1000);
+	session->add_command (new StatefulDiffCommand (playlist));
+	session->commit_reversible_command ();
+
+	/* Undo that */
+	session->undo (1);
+
+	/* And do it again */
+	session->begin_reversible_command ("foo");
+	playlist->clear_changes ();
+	playlist->duplicate (region, region->last_frame(), 1000);
+	session->add_command (new StatefulDiffCommand (playlist));
+	session->commit_reversible_command ();
+}
diff --git a/libs/ardour/test/profiling/sessions/1region/1region.ardour b/libs/ardour/test/profiling/sessions/1region/1region.ardour
new file mode 100644
index 0000000000..b846225009
--- /dev/null
+++ b/libs/ardour/test/profiling/sessions/1region/1region.ardour
@@ -0,0 +1,181 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Session version="3001" name="1region" sample-rate="48000" id-counter="142" event-counter="2">
+  <Config>
+    <Option name="xfade-model" value="FullCrossfade"/>
+    <Option name="xfade-choice" value="ConstantPowerMinus3dB"/>
+    <Option name="auto-xfade" value="1"/>
+    <Option name="short-xfade-seconds" value="0.015"/>
+    <Option name="destructive-xfade-msecs" value="2"/>
+    <Option name="use-region-fades" value="1"/>
+    <Option name="show-region-fades" value="1"/>
+    <Option name="native-file-data-format" value="FormatFloat"/>
+    <Option name="native-file-header-format" value="WAVE"/>
+    <Option name="auto-play" value="0"/>
+    <Option name="auto-return" value="0"/>
+    <Option name="auto-input" value="1"/>
+    <Option name="punch-in" value="0"/>
+    <Option name="punch-out" value="0"/>
+    <Option name="subframes-per-frame" value="100"/>
+    <Option name="timecode-format" value="timecode_30"/>
+    <Option name="raid-path" value=""/>
+    <Option name="audio-search-path" value=""/>
+    <Option name="midi-search-path" value=""/>
+    <Option name="auditioner-output-left" value="default"/>
+    <Option name="auditioner-output-right" value="default"/>
+    <Option name="timecode-source-is-synced" value="1"/>
+    <Option name="jack-time-master" value="1"/>
+    <Option name="use-video-sync" value="0"/>
+    <Option name="video-pullup" value="0"/>
+    <Option name="show-summary" value="1"/>
+    <Option name="show-group-tabs" value="1"/>
+    <Option name="external-sync" value="0"/>
+    <Option name="sync-source" value="JACK"/>
+    <Option name="insert-merge-policy" value="InsertMergeRelax"/>
+    <Option name="timecode-offset" value="0"/>
+    <Option name="timecode-offset-negative" value="1"/>
+    <Option name="glue-new-markers-to-bars-and-beats" value="0"/>
+    <Option name="midi-copy-is-fork" value="0"/>
+    <Option name="glue-new-regions-to-bars-and-beats" value="0"/>
+  </Config>
+  <Metadata/>
+  <Sources>
+    <Source name="MIDI 1-1.mid" type="midi" flags="Writable,CanRename" id="118" origin=""/>
+  </Sources>
+  <Regions/>
+  <Locations>
+    <Location id="86" name="Loop" start="1633716" end="2118148" flags="IsAutoLoop,IsHidden" locked="no" position-lock-style="AudioTime"/>
+    <Location id="87" name="Punch" start="0" end="1" flags="IsAutoPunch,IsHidden" locked="no" position-lock-style="AudioTime"/>
+    <Location id="133" name="session" start="1633716" end="2118148" flags="IsSessionRange" locked="no" position-lock-style="AudioTime"/>
+  </Locations>
+  <Bundles/>
+  <Routes>
+    <Route id="21" name="master" default-type="audio" flags="MasterOut" active="yes" phase-invert="00" denormal-protection="no" meter-point="MeterPostFader" order-keys="editor=0:signal=0" self-solo="no" soloed-by-upstream="0" soloed-by-downstream="0" solo-isolated="no" solo-safe="no">
+      <IO name="master" id="38" direction="Input" default-type="audio" user-latency="0">
+        <Port type="audio" name="master/audio_in 1"/>
+        <Port type="audio" name="master/audio_in 2"/>
+      </IO>
+      <IO name="master" id="39" direction="Output" default-type="audio" user-latency="0">
+        <Port type="audio" name="master/audio_out 1">
+          <Connection other="system:playback_1"/>
+        </Port>
+        <Port type="audio" name="master/audio_out 2">
+          <Connection other="system:playback_2"/>
+        </Port>
+      </IO>
+      <Controllable name="solo" id="23" flags="Toggle" value="0.000000000000"/>
+      <Controllable name="mute" id="25" flags="Toggle" value="0.000000000000"/>
+      <MuteMaster mute-point="PreFader,PostFader,Listen,Main" muted="no"/>
+      <RemoteControl id="318"/>
+      <Pannable>
+        <Controllable name="pan-azimuth" id="29" flags="" value="0.500000000000"/>
+        <Controllable name="pan-width" id="33" flags="" value="1.000000000000"/>
+        <Controllable name="pan-elevation" id="31" flags="" value="0.000000000000"/>
+        <Controllable name="pan-frontback" id="35" flags="" value="0.000000000000"/>
+        <Controllable name="pan-lfe" id="37" flags="" value="0.000000000000"/>
+        <Automation/>
+      </Pannable>
+      <Processor id="40" name="Amp" active="yes" user-latency="0" type="amp">
+        <Controllable name="gaincontrol" id="42" flags="GainLike" value="1.000000000000"/>
+      </Processor>
+      <Processor id="43" name="Meter" active="yes" user-latency="0" type="meter"/>
+      <Processor id="44" name="master" active="yes" user-latency="0" own-input="yes" own-output="no" output="master" type="main-outs" role="Main">
+        <PannerShell bypassed="no">
+          <Panner type="Equal Power Stereo"/>
+        </PannerShell>
+      </Processor>
+    </Route>
+    <Route id="88" name="MIDI 1" default-type="midi" active="yes" phase-invert="" denormal-protection="no" meter-point="MeterPostFader" order-keys="editor=1:signal=1" self-solo="no" soloed-by-upstream="0" soloed-by-downstream="0" solo-isolated="no" solo-safe="no" monitoring="" saved-meter-point="MeterPostFader" note-mode="Sustained" step-editing="no" midi-thru="yes" input-active="yes">
+      <IO name="MIDI 1" id="105" direction="Input" default-type="midi" user-latency="0">
+        <Port type="midi" name="MIDI 1/midi_in 1"/>
+      </IO>
+      <IO name="MIDI 1" id="106" direction="Output" default-type="midi" user-latency="0">
+        <Port type="midi" name="MIDI 1/midi_out 1"/>
+      </IO>
+      <Controllable name="solo" id="90" flags="Toggle" value="0.000000000000"/>
+      <Controllable name="mute" id="92" flags="Toggle" value="0.000000000000"/>
+      <MuteMaster mute-point="PreFader,PostFader,Listen,Main" muted="no"/>
+      <RemoteControl id="2"/>
+      <Pannable>
+        <Controllable name="pan-azimuth" id="96" flags="" value="0.500000000000"/>
+        <Controllable name="pan-width" id="100" flags="" value="0.000000000000"/>
+        <Controllable name="pan-elevation" id="98" flags="" value="0.000000000000"/>
+        <Controllable name="pan-frontback" id="102" flags="" value="0.000000000000"/>
+        <Controllable name="pan-lfe" id="104" flags="" value="0.000000000000"/>
+        <Automation/>
+      </Pannable>
+      <Processor id="107" name="Amp" active="yes" user-latency="0" type="amp">
+        <Controllable name="gaincontrol" id="109" flags="GainLike" value="1.000000000000"/>
+      </Processor>
+      <Processor id="110" name="Meter" active="yes" user-latency="0" type="meter"/>
+      <Processor id="111" name="MIDI 1" active="yes" user-latency="0" own-input="yes" own-output="no" output="MIDI 1" type="main-outs" role="Main">
+        <PannerShell bypassed="no"/>
+      </Processor>
+      <Controllable name="recenable" id="113" flags="Toggle" value="0.000000000000"/>
+      <Diskstream flags="Recordable" playlist="MIDI 1.1" name="MIDI 1" id="115" speed="1.000000" capture-alignment="Automatic" channel-mode="AllChannels" channel-mask="0xffff"/>
+    </Route>
+  </Routes>
+  <Playlists>
+    <Playlist id="116" name="MIDI 1.1" type="midi" orig-track-id="88" frozen="no" combine-ops="0">
+      <Region locked="0" name="MIDI 1-1" position="1633716" length="484432" stretch="1" muted="0" opaque="1" automatic="0" whole-file="0" import="0" external="0" sync-marked="0" left-of-split="0" right-of-split="0" hidden="0" position-locked="0" valid-transients="0" start="0" sync-position="0" ancestral-start="0" ancestral-length="0" shift="1" positional-lock-style="MusicTime" layering-index="0" start-beats="0" length-beats="20.1846666667" id="131" type="midi" first-edit="nothing" bbt-position="18|1|137" source-0="118" master-source-0="118"/>
+    </Playlist>
+  </Playlists>
+  <UnusedPlaylists/>
+  <RouteGroups/>
+  <Click>
+    <IO name="click" id="46" direction="Output" default-type="audio" user-latency="0">
+      <Port type="audio" name="click/audio_out 1">
+        <Connection other="system:playback_1"/>
+      </Port>
+      <Port type="audio" name="click/audio_out 2">
+        <Connection other="system:playback_2"/>
+      </Port>
+    </IO>
+    <Processor id="47" name="Amp" active="yes" user-latency="0" type="amp">
+      <Controllable name="gaincontrol" id="49" flags="GainLike" value="1.000000000000"/>
+    </Processor>
+  </Click>
+  <NamedSelections/>
+  <Speakers>
+    <Speaker azimuth="0" elevation="0" distance="1"/>
+    <Speaker azimuth="180" elevation="0" distance="0"/>
+  </Speakers>
+  <TempoMap>
+    <Tempo start="1|1|0" beats-per-minute="120.000000" note-type="4.000000" movable="no"/>
+    <Meter start="1|1|0" note-type="4.000000" divisions-per-bar="4.000000" movable="no"/>
+  </TempoMap>
+  <ControlProtocols>
+    <Protocol name="Open Sound Control (OSC)" active="no"/>
+    <Protocol name="Generic MIDI" feedback="0" feedback-interval="10000" active="yes">
+      <Controls/>
+    </Protocol>
+    <Protocol name="Mackie" bank="0" ipmidi-base="21928" device-profile="" device-name="Mackie Control Universal Pro" active="yes"/>
+  </ControlProtocols>
+  <Extra>
+    <UI>
+      <Window name="M-21-40" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <Window name="M-21-43" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <Window name="M-21-44" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <Window name="M-88-107" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <Window name="M-88-110" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <Window name="M-88-111" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <Window name="R-88-107" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <Window name="R-88-110" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <Window name="R-88-111" visible="no" x-off="-1" y-off="-1" x-size="-1" y-size="-1"/>
+      <GUIObjectState>
+        <Object id="route 21" color="3416:21888:21293"/>
+        <Object id="rtav 21" height="62" visible="1"/>
+        <Object id="automation 42" height="62" visible="0"/>
+        <Object id="automation 29" height="62" visible="0"/>
+        <Object id="automation 33" height="62" visible="0"/>
+        <Object id="strip 21" visible="1">
+          <Object id="processor 40"/>
+        </Object>
+        <Object id="route 88" color="7490:6780:29796"/>
+        <Object id="rtav 88" height="105" visible="1" note-range-min="60" note-range-max="71" color-mode="MeterColors"/>
+        <Object id="strip 88" visible="1">
+          <Object id="processor 107"/>
+        </Object>
+      </GUIObjectState>
+    </UI>
+  </Extra>
+</Session>
diff --git a/libs/ardour/test/profiling/sessions/1region/1region.ardour.bak b/libs/ardour/test/profiling/sessions/1region/1region.ardour.bak
new file mode 100644
index 0000000000..ff17374272
--- /dev/null
+++ b/libs/ardour/test/profiling/sessions/1region/1region.ardour.bak
@@ -0,0 +1,148 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Session version="3001" name="1region" sample-rate="48000" id-counter="120" event-counter="0">
+  <Config>
+    <Option name="xfade-model" value="FullCrossfade"/>
+    <Option name="xfade-choice" value="ConstantPowerMinus3dB"/>
+    <Option name="auto-xfade" value="1"/>
+    <Option name="short-xfade-seconds" value="0.015"/>
+    <Option name="destructive-xfade-msecs" value="2"/>
+    <Option name="use-region-fades" value="1"/>
+    <Option name="show-region-fades" value="1"/>
+    <Option name="native-file-data-format" value="FormatFloat"/>
+    <Option name="native-file-header-format" value="WAVE"/>
+    <Option name="auto-play" value="0"/>
+    <Option name="auto-return" value="0"/>
+    <Option name="auto-input" value="1"/>
+    <Option name="punch-in" value="0"/>
+    <Option name="punch-out" value="0"/>
+    <Option name="subframes-per-frame" value="100"/>
+    <Option name="timecode-format" value="timecode_30"/>
+    <Option name="raid-path" value=""/>
+    <Option name="audio-search-path" value=""/>
+    <Option name="midi-search-path" value=""/>
+    <Option name="auditioner-output-left" value="default"/>
+    <Option name="auditioner-output-right" value="default"/>
+    <Option name="timecode-source-is-synced" value="1"/>
+    <Option name="jack-time-master" value="1"/>
+    <Option name="use-video-sync" value="0"/>
+    <Option name="video-pullup" value="0"/>
+    <Option name="show-summary" value="1"/>
+    <Option name="show-group-tabs" value="1"/>
+    <Option name="external-sync" value="0"/>
+    <Option name="sync-source" value="JACK"/>
+    <Option name="insert-merge-policy" value="InsertMergeRelax"/>
+    <Option name="timecode-offset" value="0"/>
+    <Option name="timecode-offset-negative" value="1"/>
+    <Option name="glue-new-markers-to-bars-and-beats" value="0"/>
+    <Option name="midi-copy-is-fork" value="0"/>
+    <Option name="glue-new-regions-to-bars-and-beats" value="0"/>
+  </Config>
+  <Metadata/>
+  <Sources/>
+  <Regions/>
+  <Locations>
+    <Location id="86" name="Loop" start="0" end="1" flags="IsAutoLoop,IsHidden" locked="no" position-lock-style="AudioTime"/>
+    <Location id="87" name="Punch" start="0" end="1" flags="IsAutoPunch,IsHidden" locked="no" position-lock-style="AudioTime"/>
+  </Locations>
+  <Bundles/>
+  <Routes>
+    <Route id="21" name="master" default-type="audio" flags="MasterOut" active="yes" phase-invert="00" denormal-protection="no" meter-point="MeterPostFader" order-keys="editor=0:signal=0" self-solo="no" soloed-by-upstream="0" soloed-by-downstream="0" solo-isolated="no" solo-safe="no">
+      <IO name="master" id="38" direction="Input" default-type="audio" user-latency="0">
+        <Port type="audio" name="master/audio_in 1"/>
+        <Port type="audio" name="master/audio_in 2"/>
+      </IO>
+      <IO name="master" id="39" direction="Output" default-type="audio" user-latency="0">
+        <Port type="audio" name="master/audio_out 1">
+          <Connection other="system:playback_1"/>
+        </Port>
+        <Port type="audio" name="master/audio_out 2">
+          <Connection other="system:playback_2"/>
+        </Port>
+      </IO>
+      <Controllable name="solo" id="23" flags="Toggle" value="0.000000000000"/>
+      <Controllable name="mute" id="25" flags="Toggle" value="0.000000000000"/>
+      <MuteMaster mute-point="PreFader,PostFader,Listen,Main" muted="no"/>
+      <RemoteControl id="318"/>
+      <Pannable>
+        <Controllable name="pan-azimuth" id="29" flags="" value="0.500000000000"/>
+        <Controllable name="pan-width" id="33" flags="" value="1.000000000000"/>
+        <Controllable name="pan-elevation" id="31" flags="" value="0.000000000000"/>
+        <Controllable name="pan-frontback" id="35" flags="" value="0.000000000000"/>
+        <Controllable name="pan-lfe" id="37" flags="" value="0.000000000000"/>
+        <Automation/>
+      </Pannable>
+      <Processor id="40" name="Amp" active="yes" user-latency="0" type="amp">
+        <Controllable name="gaincontrol" id="42" flags="GainLike" value="1.000000000000"/>
+      </Processor>
+      <Processor id="43" name="Meter" active="yes" user-latency="0" type="meter"/>
+      <Processor id="44" name="master" active="yes" user-latency="0" own-input="yes" own-output="no" output="master" type="main-outs" role="Main">
+        <PannerShell bypassed="no">
+          <Panner type="Equal Power Stereo"/>
+        </PannerShell>
+      </Processor>
+    </Route>
+    <Route id="88" name="MIDI 1" default-type="midi" active="yes" phase-invert="" denormal-protection="no" meter-point="MeterPostFader" order-keys="signal=2" self-solo="no" soloed-by-upstream="0" soloed-by-downstream="0" solo-isolated="no" solo-safe="no" monitoring="" saved-meter-point="MeterPostFader" note-mode="Sustained" step-editing="no" midi-thru="yes" input-active="yes">
+      <IO name="MIDI 1" id="105" direction="Input" default-type="midi" user-latency="0">
+        <Port type="midi" name="MIDI 1/midi_in 1"/>
+      </IO>
+      <IO name="MIDI 1" id="106" direction="Output" default-type="midi" user-latency="0">
+        <Port type="midi" name="MIDI 1/midi_out 1"/>
+      </IO>
+      <Controllable name="solo" id="90" flags="Toggle" value="0.000000000000"/>
+      <Controllable name="mute" id="92" flags="Toggle" value="0.000000000000"/>
+      <MuteMaster mute-point="PreFader,PostFader,Listen,Main" muted="no"/>
+      <RemoteControl id="2"/>
+      <Pannable>
+        <Controllable name="pan-azimuth" id="96" flags="" value="0.500000000000"/>
+        <Controllable name="pan-width" id="100" flags="" value="0.000000000000"/>
+        <Controllable name="pan-elevation" id="98" flags="" value="0.000000000000"/>
+        <Controllable name="pan-frontback" id="102" flags="" value="0.000000000000"/>
+        <Controllable name="pan-lfe" id="104" flags="" value="0.000000000000"/>
+        <Automation/>
+      </Pannable>
+      <Processor id="107" name="Amp" active="yes" user-latency="0" type="amp">
+        <Controllable name="gaincontrol" id="109" flags="GainLike" value="1.000000000000"/>
+      </Processor>
+      <Processor id="110" name="Meter" active="yes" user-latency="0" type="meter"/>
+      <Processor id="111" name="MIDI 1" active="yes" user-latency="0" own-input="yes" own-output="no" output="MIDI 1" type="main-outs" role="Main">
+        <PannerShell bypassed="no"/>
+      </Processor>
+      <Controllable name="recenable" id="113" flags="Toggle" value="0.000000000000"/>
+      <Diskstream flags="Recordable" playlist="MIDI 1.1" name="MIDI 1" id="115" speed="1.000000" capture-alignment="Automatic" channel-mode="AllChannels" channel-mask="0xffff"/>
+    </Route>
+  </Routes>
+  <Playlists>
+    <Playlist id="116" name="MIDI 1.1" type="midi" orig-track-id="88" frozen="no" combine-ops="0"/>
+  </Playlists>
+  <UnusedPlaylists/>
+  <RouteGroups/>
+  <Click>
+    <IO name="click" id="46" direction="Output" default-type="audio" user-latency="0">
+      <Port type="audio" name="click/audio_out 1">
+        <Connection other="system:playback_1"/>
+      </Port>
+      <Port type="audio" name="click/audio_out 2">
+        <Connection other="system:playback_2"/>
+      </Port>
+    </IO>
+    <Processor id="47" name="Amp" active="yes" user-latency="0" type="amp">
+      <Controllable name="gaincontrol" id="49" flags="GainLike" value="1.000000000000"/>
+    </Processor>
+  </Click>
+  <NamedSelections/>
+  <Speakers>
+    <Speaker azimuth="0" elevation="0" distance="1"/>
+    <Speaker azimuth="180" elevation="0" distance="0"/>
+  </Speakers>
+  <TempoMap>
+    <Tempo start="1|1|0" beats-per-minute="120.000000" note-type="4.000000" movable="no"/>
+    <Meter start="1|1|0" note-type="4.000000" divisions-per-bar="4.000000" movable="no"/>
+  </TempoMap>
+  <ControlProtocols>
+    <Protocol name="Open Sound Control (OSC)" active="no"/>
+    <Protocol name="Generic MIDI" feedback="0" feedback-interval="10000" active="yes">
+      <Controls/>
+    </Protocol>
+    <Protocol name="Mackie" bank="0" ipmidi-base="21928" device-profile="" device-name="Mackie Control Universal Pro" active="yes"/>
+  </ControlProtocols>
+</Session>
diff --git a/libs/ardour/test/profiling/sessions/1region/1region.history b/libs/ardour/test/profiling/sessions/1region/1region.history
new file mode 100644
index 0000000000..d836783943
--- /dev/null
+++ b/libs/ardour/test/profiling/sessions/1region/1region.history
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<UndoHistory>
+  <UndoTransaction tv-sec="1339964796" tv-usec="189501" name="create region">
+    <StatefulDiffCommand obj-id="116" type-name="ARDOUR::MidiPlaylist">
+      <Changes>
+        <Regions>
+          <Add id="131"/>
+        </Regions>
+      </Changes>
+    </StatefulDiffCommand>
+  </UndoTransaction>
+  <UndoTransaction tv-sec="1339964800" tv-usec="298226" name="Region end trim">
+    <StatefulDiffCommand obj-id="131" type-name="ARDOUR::MidiRegion">
+      <Changes>
+        <length from="96000" to="484432"/>
+        <length-beats from="4" to="20.1846666667"/>
+      </Changes>
+    </StatefulDiffCommand>
+  </UndoTransaction>
+  <UndoTransaction tv-sec="1339964802" tv-usec="348425" name="add note">
+    <NoteDiffCommand midi-source="118">
+      <ChangedNotes/>
+      <AddedNotes>
+        <note id="0" note="69" channel="0" time="3.656" length="4.78183" velocity="64"/>
+      </AddedNotes>
+      <RemovedNotes/>
+    </NoteDiffCommand>
+  </UndoTransaction>
+  <UndoTransaction tv-sec="1339964802" tv-usec="958308" name="add note">
+    <NoteDiffCommand midi-source="118">
+      <ChangedNotes/>
+      <AddedNotes>
+        <note id="1" note="65" channel="0" time="5.31125" length="5.33358" velocity="64"/>
+      </AddedNotes>
+      <RemovedNotes/>
+    </NoteDiffCommand>
+  </UndoTransaction>
+</UndoHistory>
diff --git a/libs/ardour/test/profiling/sessions/1region/1region.history.bak b/libs/ardour/test/profiling/sessions/1region/1region.history.bak
new file mode 100644
index 0000000000..6dd2506a89
--- /dev/null
+++ b/libs/ardour/test/profiling/sessions/1region/1region.history.bak
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<UndoHistory/>
diff --git a/libs/ardour/test/profiling/sessions/1region/instant.xml b/libs/ardour/test/profiling/sessions/1region/instant.xml
new file mode 100644
index 0000000000..6ee1811962
--- /dev/null
+++ b/libs/ardour/test/profiling/sessions/1region/instant.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<instant>
+  <Editor id="11" mixer-width="Wide" zoom-focus="ZoomFocusPlayhead" zoom="4413.999148" snap-to="SnapToBeat" snap-mode="SnapOff" internal-snap-to="SnapToBeat" internal-snap-mode="SnapOff" pre-internal-snap-to="SnapToBeatDiv3" pre-internal-snap-mode="SnapOff" edit-point="EditAtPlayhead" playhead="0" left-frame="0" y-origin="0.000000" show-measures="yes" maximised="no" follow-playhead="no" stationary-playhead="no" region-list-sort-type="ByEndInFile" mouse-mode="MouseObject" internal-edit="yes" join-object-range="no" show-editor-mixer="yes" show-editor-list="yes" editor-list-page="1" show-marker-lines="yes" nudge-clock-value="240000">
+    <geometry x-size="1366" y-size="714" x-pos="0" y-pos="27" edit-horizontal-pane-pos="1011" notebook-shrunk="0" edit-vertical-pane-pos="518"/>
+    <Buttons>
+      <Press/>
+      <Release/>
+    </Buttons>
+    <Selection/>
+    <RegionList sort-type="ByEndInFile" sort-ascending="yes" show-all="no" show-automatic-regions="yes"/>
+  </Editor>
+  <Mixer narrow-strips="no" show-mixer="no"/>
+</instant>