From 994d13df5a172e9188f92cecc1b6ef53d8f54ba9 Mon Sep 17 00:00:00 2001
From: Howard Stearns <howard@highfidelity.io>
Date: Sat, 16 Jan 2016 11:32:19 -0800
Subject: [PATCH] A test script to confirm that the specified edit rate can be
 achieved for the specified number of objects.

---
 examples/tests/performance/staticEdits.js | 97 +++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 examples/tests/performance/staticEdits.js

diff --git a/examples/tests/performance/staticEdits.js b/examples/tests/performance/staticEdits.js
new file mode 100644
index 0000000000..61d75c9a9a
--- /dev/null
+++ b/examples/tests/performance/staticEdits.js
@@ -0,0 +1,97 @@
+"use strict";
+/*jslint nomen: true, plusplus: true, vars: true*/
+var Entities, Script, print, Vec3, MyAvatar;
+//
+//  Created by Howard Stearns
+//  Copyright 2016 High Fidelity, Inc.
+//  
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+//  Creates a rectangular matrix of objects overhed, and edits them at EDIT_FREQUENCY_TARGET.
+//  Reports ms since last edit, ms to edit all the created entities, and average ms to edit one entity,
+//  so that you can measure how many edits can be made.
+//
+var LIFETIME = 15;
+var EDIT_FREQUENCY_TARGET = 60; // hertz
+var ROWS_X = 10;
+var ROWS_Y = 1;
+var ROWS_Z = 10;
+var SEPARATION = 10.0;
+var SIZE = 1.0;
+//  Note that when creating things quickly, the entity server will ignore data if we send updates too quickly.
+//  like Internet MTU, these rates are set by th domain operator, so in this script there is a RATE_PER_SECOND 
+//  variable letting you set this speed.  If entities are missing from the grid after a relog, this number 
+//  being too high may be the reason. 
+var RATE_PER_SECOND = 600;    //    The entity server will drop data if we create things too fast.
+var SCRIPT_INTERVAL = 100;
+
+var x = 0;
+var y = 0;
+var z = 0;
+var o = Vec3.sum(MyAvatar.position, {x: ROWS_X * SEPARATION / -2, y: SEPARATION, z: ROWS_Z * SEPARATION / -2});
+var totalCreated = 0;
+var startTime = new Date();
+var totalToCreate = ROWS_X * ROWS_Y * ROWS_Z;
+print("Creating " + totalToCreate + " entities starting at " + startTime);
+
+var ids = [], colors = [], flasher, lastService = Date.now();
+function doFlash() {  // One could call this in an interval timer, an update, or even a separate entity script.
+    var i, oldColor,  newColor;
+    var start = Date.now();
+    for (i = 0; i < ids.length; i++) {
+        oldColor = colors[i];
+        newColor = {red: oldColor.green, green: oldColor.blue, blue: oldColor.red};
+        colors[i] = newColor;
+        Entities.editEntity(ids[i], {color: newColor});
+    }
+    var elapsed = Date.now() - start, serviceTime = start - lastService;
+    lastService = start;
+    print(serviceTime, elapsed, elapsed / totalCreated); // ms since last flash, ms to edit all entities, average ms to edit one entity
+}
+function stopFlash() {
+    Script.clearTimeout(flasher);
+    Script.stop();
+}
+var creator = Script.setInterval(function () {
+    if (!Entities.serversExist() || !Entities.canRez()) {
+        return;
+    }
+
+    var numToCreate = Math.min(RATE_PER_SECOND * (SCRIPT_INTERVAL / 1000.0), totalToCreate - totalCreated);
+    var i, properties;
+    for (i = 0; i < numToCreate; i++) {
+        properties = {
+            position: { x: o.x + SIZE + (x * SEPARATION), y: o.y + SIZE + (y * SEPARATION), z: o.z + SIZE + (z * SEPARATION) },
+            name: "gridTest",
+            type: 'Box',
+            dimensions: {x: SIZE, y: SIZE, z: SIZE},
+            ignoreCollisions: true,
+            collisionsWillMove: false,
+            lifetime: LIFETIME,
+            color: {red: x / ROWS_X * 255, green: y / ROWS_Y * 255, blue: z / ROWS_Z * 255}
+        };
+        colors.push(properties.color);
+        ids.push(Entities.addEntity(properties));
+        totalCreated++;
+
+        x++;
+        if (x === ROWS_X) {
+            x = 0;
+            y++;
+            if (y === ROWS_Y) {
+                y = 0;
+                z++;
+                print("Created: " + totalCreated);
+            }
+        }
+        if (z === ROWS_Z) {
+            print("Total: " + totalCreated + " entities in " + ((new Date() - startTime) / 1000.0) + " seconds.");
+            Script.clearTimeout(creator);
+            flasher = Script.setInterval(doFlash, Math.ceil((1 / EDIT_FREQUENCY_TARGET) * 1000));
+            Script.setTimeout(stopFlash, LIFETIME * 1000);
+        }
+    }
+}, SCRIPT_INTERVAL);
+Script.scriptEnding.connect(function () { Script.clearTimeout(flasher); });
+