List of Chromium Command Line Switches « Peter Beverloo. Condition. Explanation- -/prefetch: 1. It has been observed that when file reads are consistent for 3 process launches with the same /prefetch: # argument, the Windows prefetcher starts issuing reads in batch at process launch. Because reads depend on the process type, the prefetcher wouldn't be able to observe consistent reads if no /prefetch: # arguments were used. Note that the browser process has no /prefetch: # argument; as such all other processes must have one in order to avoid polluting its profile. ![]() Note: # must always be in . Use profiles 5, 6 and 7 as documented on k. Prefetch. Argument* in content. It is likely that the prefetcher won't work for these process types as it won't be able to observe consistent file reads across launches. However, having a valid prefetch argument for these process types is required to prevent them from interfering with the prefetch profile of the browser process. Apps cannot start until provided resources. This flag implies - -alsa- check- close- timeout=0. Massive list of programs that can run on a Windows 10/8/7/Vista/XP system at startup, including those created by viruses, worms, spyware and trojans - including how.![]() The new tuning aims at resolving two issues with the AEC: https: //bugs. TODO(hlundin): Remove this switch when experimentation is over; crbug. The valid range is 1. Values outside that range will be clamped to the lowest or highest valid value inside Web. RTC. TODO(tommi): Remove this switch when crbug. This flag is used by Rialto device to obtain device policy during OOBE since the Rialto device has no display and and only connects over cell. This is useful for tests because it means that tests don't have to mock out the policy infrastructure. This is an override for developers who need the old behavior for testing. This flag is required to allow Chrome to run in Remote. Apps or Citrix. This flag can reduce the security of the sandboxed processes and allow them to do certain API calls like shut down Windows or access the clipboard. Also we lose the chance to kill some processes until the outer job that owns them finishes. Usually RA is disabled in dev mode because it will always fail. However, there are cases in testing where we do want to go through the permission flow even in dev mode. This can be enabled by this flag. This provides an override to get the old insecure behavior. Assumed to be 0 if - -accept- resource- provider is present. Should be set to true for internal audio products. ![]() ![]() ![]() This directly sets the latency of the output device. Latency can be calculated by multiplying the sample rate by the output buffer size. The period of an ALSA output device determines how many frames elapse between hardware interrupts. The specified directory should include the configuration xml file with the name . This is used in blimp to emulate android fonts on linux. Only supported on Android. Only supported on Android. Only supported on Android. Used in order to properly restore auto- launched state during session restore flow. Screenshot of Windows Vista Ultimate, showing its desktop, taskbar, Start menu, Windows Sidebar, Welcome Center and glass effects of Windows Aero. If you’re looking to give your computer a quick & free speed boost, try ReadyBoost. The Windows feature adds additional memory 5 Ways to Clear Memory & Increase RAM. This in tu. Used for testing. Note: the URL must contain one '%s' for the extension ID. This can take one of the following three values. ![]() Users can enable ARC only when Finch experiment is turned on. So users can enable ARC via settings etc. Signals the availability of the ARC instance on this device. Can make boot slightly slower, but also hides an even- longer awkward period where we display a white background if the login wallpaper takes a long time to load. Touch Exploration Mode will no longer be turned on automatically when spoken feedback is enabled when this flag is set. Possible values: parallel. Default: parallel. Standard hardware reports releases immediately after presses. It is intended to be used by developers and automation to not require user interaction for opening Dev. Tools. Should only be used for tests. For instance, - -auto- select- desktop- capture- source=. Format is < name>. The names are declared in Settings. For boolean type, use . For enum type, use the int value of the enum value. Applied after other command line flags and prefs. See Content. Verifier. Delegate: :Mode for more explanation.
Should completely disable extensions, sync and bookmarks. It is intended to be used by developers who wish to test that their sites otherwise meet the criteria needed to show app banners. Requires MSAA support by GPU to have an effect. MSAA. Should only be used for testing purposes. Takes the absolute path to the service library to load as an argument. Not for user use. This allows simulating the expiration of credentials during testing. Defaults to . Defaults to null if unspecified. This does not start service or register proxy for autostart. Only used if the cloud print service has been enabled. ![]() Used for testing. Only used if the cloud print service has been enabled. Used for testing. Some touch screens display significant amount of wobble when moving a finger in a straight line. This makes two finger scroll trigger an oscillating pinch zoom. See crbug. com/3. ![]() Linking will still fail. Only valid for the browser process. Default is . UI,IO,DB,FILE,CACHE are the list of Browser. Threads that are supported. Default is . Default is . This is only used on Windows. We bundle the handler into chrome. Windows because there is high probability of a . On other platforms, crashpad. Browser tests may need to add this switch so that at least one browser instance is created on startup. TODO(nkostylev): Investigate if this switch could be removed. These experiments are defined by the proxy server. Use - -force- fieldtrials for Data Reduction Proxy field trials. It is illegal to use . If the URI omits a scheme, then the proxy server scheme defaults to HTTP, and if the port is omitted then the default port for that scheme is used. The various modes are always- on, cellular- only, slow connections only and disabled. Note this check does not go through the Data Reduction Proxy. This removes a significant source of network related non- determinism at the cost of slower page loads. This is controlled by policy and is kept separate from the other enable/disable switches to avoid accidentally regressing the policy support for controlling access to these APIs. At least YUV decoding will be accelerated when not using this flag. Has no effect unless GPU rasterization is enabled. This is useful when testing the app list or a custom launcher page. It can still be dismissed via the other methods (like the Esc key). This is for use when doing network performance testing to avoid noise in the measurements. Can prevent blinking for users with many windows/tabs and lots of memory. Use names from Runtime. Enabled. Features. Applied after k. Enable. Blink. Features, and after other flags that change these features. This is used during automated testing. This switch is intended only for tests. This in turn will disable Web. GL2. This is used during automated testing. See base: :Feature. List: :Initialize. From. Command. Line for details. Used by 'fake' telemetry login. With this the GL output will not be correct but tests will run faster. Overrides k. Enable. Gpu. Async. Worker. Context. For tests and platforms where software fallback is disabled. Overrides the k. Enable. Gpu. Rasterization and k. Force. Gpu. Rasterization flags. We can select from the options below: beginframe: Next frame can start without any delay on cc: :scheduler in renderer compositors. This uses less power, particularly during animations, but more white may be seen during fast scrolling especially on slower devices. Overrides the k. Enable. Main. Frame. Before. Activation flag. Does not change the behavior of the media service. The card will never be stored locally. Disabling this switch also disables the use of persistent gpu memory buffers. This flag overrides k. Enable. Per. Monitor. Dpi. This switch may be used to disable that check. This switch is used during automated testing. SVG font should always work whether this option is specified or not. Default is false. This is generally only useful for tests that want to force disabling. Used for perf testing. See k. Enable. Slimming. Paint. Invalidation. See sync/base/model. Types should be comma separated, and follow the naming convention for string representation of model types, e. Typed URLs, Bookmarks, Autofill Profiles' . Selenium/Web. Driver). Normal browser users should disable translate with the preference. When Chrome embeds Content, it ignores this switch on its stable and beta channels. The XSSAuditor mitigates reflective XSS. Thus, we need a switch to force this behavior for Chrome. OS Aura, disable . TODO(pkotwicz): Investigate if this bug can be removed. Emulates the GTK+ . This binding happens on per- frame basis and hence can potentially be a performance bottleneck. One should only enable it when automating dom based tests. Flash will be ducked when losing audio focus. The file is overwritten if it exists. Useful for convertible tablet. Bitmask - 0x. 1=Microsoft, 0x. AMD, 0x. 03=Try all. This is accessible from chrome: //apps and chrome: //extensions and is already enabled on non- mac. Please use - -arc- availability=officially- supported. Enables starting the ARC instance upon session start. Use names from Runtime. Enabled. Features. Applied before k. Disable. Blink. Features, and after other flags that change these features. Enables the Cloud Print Proxy component within the service process. By default connector uses CDD. When enabled without k. Enable. Color. Correct. Rendering or k. Enable. True. Color. Rendering flags, . On platforms where helper processes cannot access to files needed to make this decision, this flag is generated internally. This means a lite page should be requested instead of placeholders whenever Lo- Fi mode is on. Lo- fi must also be enabled via a flag or field trial. This is different from the Media Session API as it is enabling a default behaviour for the browser. The allowed values are: . Enable: allow browser to use display list for 2d canvas (browser makes decision). Force: browser always uses display list for 2d canvas. Only valid if GPU rasterization is enabled as well. This works only with drm platform. See k. Enable. Scripts.
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