火狐44.02正式版如何开启多进程

44不支持哦，至少也要45 beta 哦。

fang5566：44不支持哦，至少也要45 beta 哦。回到原帖

如果是这样的话 release应该也支持 我回去找下源码 应该能推测出来

44.0.2正式版相关代码段参见

bool
mozilla::BrowserTabsRemoteAutostart()
{
  if (gBrowserTabsRemoteAutostartInitialized) {
    return gBrowserTabsRemoteAutostart;
  }
  gBrowserTabsRemoteAutostartInitialized = true;
  bool optInPref = Preferences::GetBool("browser.tabs.remote.autostart", false);
  bool trialPref = Preferences::GetBool("browser.tabs.remote.autostart.2", false);
  bool prefEnabled = optInPref || trialPref;
  int status;
  if (optInPref) {
    status = kE10sEnabledByUser;
  } else if (trialPref) {
    status = kE10sEnabledByDefault;
  } else {
    status = kE10sDisabledByUser;
  }

#ifdef E10S_TESTING_ONLY
  bool e10sAllowed = true;
#else
  // When running tests with 'layers.offmainthreadcomposition.testing.enabled', e10s must be
  // allowed because these tests must be allowed to run remotely.
  // We are also allowing e10s to be enabled on Beta (which doesn't have E10S_TESTING_ONLY defined.
  bool e10sAllowed = Preferences::GetDefaultCString("app.update.channel").EqualsLiteral("beta") ||
                     Preferences::GetBool("layers.offmainthreadcomposition.testing.enabled", false);
#endif

  // Check for some conditions that might disable e10s.
  bool disabledForA11y = Preferences::GetBool("browser.tabs.remote.disabled-for-a11y", false);
  // Disable for VR
  bool disabledForVR = Preferences::GetBool("dom.vr.enabled", false);

  if (e10sAllowed && prefEnabled) {
    if (disabledForA11y) {
      status = kE10sDisabledForAccessibility;
      LogE10sBlockedReason("An accessibility tool is or was active. See bug 1115956.");
    } else if (disabledForVR) {
      LogE10sBlockedReason("Experimental VR interfaces are enabled");
    } else {
      gBrowserTabsRemoteAutostart = true;
    }
  }

#if defined(XP_MACOSX)
  // If for any reason we suspect acceleration will be disabled, disabled
  // e10s auto start on mac.
  if (gBrowserTabsRemoteAutostart) {
    // Check prefs
    bool accelDisabled = Preferences::GetBool("layers.acceleration.disabled", false) &&
                         !Preferences::GetBool("layers.acceleration.force-enabled", false);

    accelDisabled = accelDisabled || !nsCocoaFeatures::AccelerateByDefault();

    // Check for blocked drivers
    if (!accelDisabled) {
      nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
      if (gfxInfo) {
        int32_t status;
        if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_OPENGL_LAYERS, &status)) &&
            status != nsIGfxInfo::FEATURE_STATUS_OK) {
          accelDisabled = true;
        }
      }
    }

    // Check env flags
    if (accelDisabled) {
      const char *acceleratedEnv = PR_GetEnv("MOZ_ACCELERATED");
      if (acceleratedEnv && (*acceleratedEnv != '0')) {
        accelDisabled = false;
      }
    }

    if (accelDisabled) {
      gBrowserTabsRemoteAutostart = false;

      status = kE10sDisabledForMacGfx;
      LogE10sBlockedReason("Hardware acceleration is disabled");
    }
  }
#endif // defined(XP_MACOSX)

  mozilla::Telemetry::Accumulate(mozilla::Telemetry::E10S_AUTOSTART, gBrowserTabsRemoteAutostart);
  mozilla::Telemetry::Accumulate(mozilla::Telemetry::E10S_AUTOSTART_STATUS, status);
  if (Preferences::GetBool("browser.enabledE10SFromPrompt", false)) {
    mozilla::Telemetry::Accumulate(mozilla::Telemetry::E10S_STILL_ACCEPTED_FROM_PROMPT,
                                    gBrowserTabsRemoteAutostart);
  }
  if (prefEnabled) {
    mozilla::Telemetry::Accumulate(mozilla::Telemetry::E10S_BLOCKED_FROM_RUNNING,
                                    !gBrowserTabsRemoteAutostart);
  }
  return gBrowserTabsRemoteAutostart;
}

 那么由此可知（以Windows为例，其他系统有变化）

想要在正式版本中开启e10s，那么需要下列4个条件，缺一不可（开启后造成的问题自己承担）

1）browser.tabs.remote.disabled-for-a11y  为false
2）dom.vr.enabled 为false
3）app.update.channel为beta 或者 layers.offmainthreadcomposition.testing.enabled 为true
4）browser.tabs.remote.autostart为true 或者 browser.tabs.remote.autostart.2 为true

pcxfirefox：那么由此可知（以Windows为例，其他系统有变化）

想要在正式版本中开启e10s，那么需要下列4个条件，缺一不可（开启后造成的问题自己承担）

1）browser.tabs.remote.disabled-for-a11y  为...回到原帖

这么详细啊，赞。我之前帖子是只提到部分 beta 用户才可参与测试，https://www.firefox.net.cn/read-52171

没有的多呢 能看见的只是很少一部分

browser.tabs.remote.autostart    true
layers.async-pan-zoom.enabled    true(这个只是提升缩放性能)
layers.offmainthreadcomposition.testing.enabled     true