Bug 1632750 - Tweak about:profiling default buffer sizes - r=gregtatum

Presets used 16Mi entries (128MiB) by default, but these numbers were a limit per process.
Now that the limit is for the whole Firefox app, we would record a lot less information, because there are typically around 8 or more processes.
So the default are now 8 times larger to roughly record a similar amount of profiling data.

Also the custom buffer maximum size has been increased from 1GiB to 2GiB.

Differential Revision: https://phabricator.services.mozilla.com/D73216

devtools/client/performance-new/components/Settings.js

@@ -195,7 +195,7 @@ class Settings extends PureComponent {
     this._intervalExponentialScale = makeExponentialScale(0.01, 100);
     this._entriesExponentialScale = makePowerOf2Scale(
       128 * 1024,
-      128 * 1024 * 1024
+      256 * 1024 * 1024
     );
   }
 

devtools/client/performance-new/popup/background.jsm.js

@@ -85,7 +85,7 @@ const presets = {
     label: "Web Developer",
     description:
       "Recommended preset for most web app debugging, with low overhead.",
-    entries: 16 * 1024 * 1024,
+    entries: 128 * 1024 * 1024,
     interval: 1,
     features: ["screenshots", "js"],
     threads: ["GeckoMain", "Compositor", "Renderer", "DOM Worker"],
@@ -94,7 +94,7 @@ const presets = {
   "firefox-platform": {
     label: "Firefox Platform",
     description: "Recommended preset for internal Firefox platform debugging.",
-    entries: 16 * 1024 * 1024,
+    entries: 128 * 1024 * 1024,
     interval: 1,
     features: ["screenshots", "js", "leaf", "stackwalk", "java"],
     threads: ["GeckoMain", "Compositor", "Renderer"],
@@ -103,7 +103,7 @@ const presets = {
   "firefox-front-end": {
     label: "Firefox Front-End",
     description: "Recommended preset for internal Firefox front-end debugging.",
-    entries: 16 * 1024 * 1024,
+    entries: 128 * 1024 * 1024,
     interval: 1,
     features: ["screenshots", "js", "leaf", "stackwalk", "java"],
     threads: ["GeckoMain", "Compositor", "Renderer", "DOM Worker"],
@@ -112,7 +112,7 @@ const presets = {
   media: {
     label: "Media",
     description: "Recommended preset for diagnosing audio and video problems.",
-    entries: 16 * 1024 * 1024,
+    entries: 128 * 1024 * 1024,
     interval: 1,
     features: ["js", "leaf", "stackwalk"],
     threads: [

devtools/client/performance-new/test/browser/browser_aboutprofiling-entries.js

@@ -10,7 +10,7 @@ add_task(async function test() {
   await withAboutProfiling(async document => {
     is(
       getActiveConfiguration().capacity,
-      Math.pow(2, 24),
+      128 * 1024 * 1024,
       "The active configuration is set to a specific number initially. If this" +
         " test fails here, then the magic numbers here may need to be adjusted."
     );
@@ -21,7 +21,7 @@ add_task(async function test() {
 
     is(
       getActiveConfiguration().capacity,
-      Math.pow(2, 18),
+      256 * 1024,
       "The capacity changed to a smaller value."
     );
   });