diff --git a/src/vs/platform/ipc/electron-sandbox/sharedProcessService.ts b/src/vs/platform/ipc/electron-sandbox/sharedProcessService.ts
index 87539339df7..667702d1b04 100644
--- a/src/vs/platform/ipc/electron-sandbox/sharedProcessService.ts
+++ b/src/vs/platform/ipc/electron-sandbox/sharedProcessService.ts
@@ -12,6 +12,7 @@ import { generateUuid } from 'vs/base/common/uuid';
 import { ILogService } from 'vs/platform/log/common/log';
 import { Disposable } from 'vs/base/common/lifecycle';
 import { ISharedProcessService } from 'vs/platform/ipc/electron-sandbox/services';
+import { mark } from 'vs/base/common/performance';
 
 export class SharedProcessService extends Disposable implements ISharedProcessService {
 
@@ -30,6 +31,7 @@ export class SharedProcessService extends Disposable implements ISharedProcessSe
 
 	private async connect(): Promise<MessagePortClient> {
 		this.logService.trace('Renderer->SharedProcess#connect');
+		mark('code/willConnectSharedProcess');
 
 		// Ask to create message channel inside the window
 		// and send over a UUID to correlate the response
@@ -42,6 +44,7 @@ export class SharedProcessService extends Disposable implements ISharedProcessSe
 		const onMessageChannelResult = Event.fromDOMEventEmitter<{ nonce: string, port: MessagePort, source: unknown }>(window, 'message', (e: MessageEvent) => ({ nonce: e.data, port: e.ports[0], source: e.source }));
 		const { port } = await Event.toPromise(Event.once(Event.filter(onMessageChannelResult, e => e.nonce === nonce && e.source === window)));
 
+		mark('code/didConnectSharedProcess');
 		this.logService.trace('Renderer->SharedProcess#connect: connection established');
 
 		return this._register(new MessagePortClient(port, `window:${this.nativeHostService.windowId}`));
diff --git a/src/vs/workbench/contrib/performance/browser/perfviewEditor.ts b/src/vs/workbench/contrib/performance/browser/perfviewEditor.ts
index 4b810831bab..aca91d0adde 100644
--- a/src/vs/workbench/contrib/performance/browser/perfviewEditor.ts
+++ b/src/vs/workbench/contrib/performance/browser/perfviewEditor.ts
@@ -177,6 +177,7 @@ class PerfModelContentProvider implements ITextModelContentProvider {
 		table.push(['init storage (global & workspace)', metrics.timers.ellapsedStorageInit, '[renderer]', undefined]);
 		table.push(['require & init workspace storage', metrics.timers.ellapsedWorkspaceStorageInit, '[renderer]', undefined]);
 		table.push(['init workspace service', metrics.timers.ellapsedWorkspaceServiceInit, '[renderer]', undefined]);
+		table.push(['connect to shared process', metrics.timers.ellapsedSharedProcesConnectionCreate, '[renderer]', undefined]);
 		if (isWeb) {
 			table.push(['init settings and global state from settings sync service', metrics.timers.ellapsedRequiredUserDataInit, '[renderer]', undefined]);
 			table.push(['init keybindings, snippets & extensions from settings sync service', metrics.timers.ellapsedOtherUserDataInit, '[renderer]', undefined]);
diff --git a/src/vs/workbench/services/timer/browser/timerService.ts b/src/vs/workbench/services/timer/browser/timerService.ts
index 324de644b65..38865803a93 100644
--- a/src/vs/workbench/services/timer/browser/timerService.ts
+++ b/src/vs/workbench/services/timer/browser/timerService.ts
@@ -232,6 +232,14 @@ export interface IStartupMetrics {
 		 */
 		readonly ellapsedWorkspaceServiceInit: number;
 
+		/**
+		 * The time it took to connect to the shared process.
+		 *
+		 * * Happens in the renderer-process
+		 * * Measured with the `willConnectSharedProcess` and `didConnectSharedProcess` performance marks.
+		 */
+		readonly ellapsedSharedProcesConnectionCreate: number;
+
 		/**
 		 * The time it took to initialize required user data (settings & global state) using settings sync service.
 		 *
@@ -524,6 +532,7 @@ export abstract class AbstractTimerService implements ITimerService {
 				ellapsedRequire: this._marks.getDuration('code/willLoadWorkbenchMain', 'code/didLoadWorkbenchMain'),
 				ellapsedWaitForShellEnv: this._marks.getDuration('code/willWaitForShellEnv', 'code/didWaitForShellEnv'),
 				ellapsedStorageInit: this._marks.getDuration('code/willInitStorage', 'code/didInitStorage'),
+				ellapsedSharedProcesConnectionCreate: this._marks.getDuration('code/willConnectSharedProcess', 'code/didConnectSharedProcess'),
 				ellapsedWorkspaceStorageInit: this._marks.getDuration('code/willInitWorkspaceStorage', 'code/didInitWorkspaceStorage'),
 				ellapsedWorkspaceServiceInit: this._marks.getDuration('code/willInitWorkspaceService', 'code/didInitWorkspaceService'),
 				ellapsedRequiredUserDataInit: this._marks.getDuration('code/willInitRequiredUserData', 'code/didInitRequiredUserData'),