diff --git a/src/cli/serve/integration_tests/reload_logging_config.test.ts b/src/cli/serve/integration_tests/reload_logging_config.test.ts
index 2def3569828d3..9ad8438c312a1 100644
--- a/src/cli/serve/integration_tests/reload_logging_config.test.ts
+++ b/src/cli/serve/integration_tests/reload_logging_config.test.ts
@@ -84,180 +84,174 @@ function createConfigManager(configPath: string) {
 }
 
 describe('Server logging configuration', function() {
-  let child: Child.ChildProcess;
+  let child: undefined | Child.ChildProcess;
+
   beforeEach(() => {
     Fs.mkdirSync(tempDir, { recursive: true });
   });
 
   afterEach(async () => {
     if (child !== undefined) {
-      child.kill();
-      // wait for child to be killed otherwise jest complains that process not finished
-      await new Promise(res => setTimeout(res, 1000));
+      const exitPromise = new Promise(resolve => child?.once('exit', resolve));
+      child.kill('SIGKILL');
+      await exitPromise;
     }
+
     Del.sync(tempDir, { force: true });
   });
 
-  const isWindows = /^win/.test(process.platform);
-  if (isWindows) {
+  if (process.platform.startsWith('win')) {
     it('SIGHUP is not a feature of Windows.', () => {
       // nothing to do for Windows
     });
-  } else {
-    describe('legacy logging', () => {
-      it(
-        'should be reloadable via SIGHUP process signaling',
-        async function() {
-          const configFilePath = Path.resolve(tempDir, 'kibana.yml');
-          Fs.copyFileSync(legacyConfig, configFilePath);
-
-          child = Child.spawn(process.execPath, [
-            kibanaPath,
-            '--oss',
-            '--config',
-            configFilePath,
-            '--verbose',
-          ]);
-
-          const message$ = Rx.fromEvent(child.stdout, 'data').pipe(
-            map(messages =>
-              String(messages)
-                .split('\n')
-                .filter(Boolean)
-            )
-          );
-
-          await message$
-            .pipe(
-              // We know the sighup handler will be registered before this message logged
-              filter(messages => messages.some(m => m.includes('setting up root'))),
-              take(1)
-            )
-            .toPromise();
-
-          const lastMessage = await message$.pipe(take(1)).toPromise();
-          expect(containsJsonOnly(lastMessage)).toBe(true);
-
-          createConfigManager(configFilePath).modify(oldConfig => {
-            oldConfig.logging.json = false;
-            return oldConfig;
-          });
-
-          child.kill('SIGHUP');
-
-          await message$
-            .pipe(
-              filter(messages => !containsJsonOnly(messages)),
-              take(1)
-            )
-            .toPromise();
-        },
-        minute
-      );
-
-      it(
-        'should recreate file handle on SIGHUP',
-        async function() {
-          const logPath = Path.resolve(tempDir, 'kibana.log');
-          const logPathArchived = Path.resolve(tempDir, 'kibana_archive.log');
-
-          child = Child.spawn(process.execPath, [
-            kibanaPath,
-            '--oss',
-            '--config',
-            legacyConfig,
-            '--logging.dest',
-            logPath,
-            '--verbose',
-          ]);
-
-          await watchFileUntil(logPath, /setting up root/, 30 * second);
-          // once the server is running, archive the log file and issue SIGHUP
-          Fs.renameSync(logPath, logPathArchived);
-          child.kill('SIGHUP');
-
-          await watchFileUntil(
-            logPath,
-            /Reloaded logging configuration due to SIGHUP/,
-            30 * second
-          );
-        },
-        minute
-      );
-    });
-
-    describe('platform logging', () => {
-      it(
-        'should be reloadable via SIGHUP process signaling',
-        async function() {
-          const configFilePath = Path.resolve(tempDir, 'kibana.yml');
-          Fs.copyFileSync(configFileLogConsole, configFilePath);
-
-          child = Child.spawn(process.execPath, [kibanaPath, '--oss', '--config', configFilePath]);
-
-          const message$ = Rx.fromEvent(child.stdout, 'data').pipe(
-            map(messages =>
-              String(messages)
-                .split('\n')
-                .filter(Boolean)
-            )
-          );
-
-          await message$
-            .pipe(
-              // We know the sighup handler will be registered before this message logged
-              filter(messages => messages.some(m => m.includes('setting up root'))),
-              take(1)
-            )
-            .toPromise();
-
-          const lastMessage = await message$.pipe(take(1)).toPromise();
-          expect(containsJsonOnly(lastMessage)).toBe(true);
-
-          createConfigManager(configFilePath).modify(oldConfig => {
-            oldConfig.logging.appenders.console.layout.kind = 'pattern';
-            return oldConfig;
-          });
-          child.kill('SIGHUP');
-
-          await message$
-            .pipe(
-              filter(messages => !containsJsonOnly(messages)),
-              take(1)
-            )
-            .toPromise();
-        },
-        30 * second
-      );
-      it(
-        'should recreate file handle on SIGHUP',
-        async function() {
-          const configFilePath = Path.resolve(tempDir, 'kibana.yml');
-          Fs.copyFileSync(configFileLogFile, configFilePath);
-
-          const logPath = Path.resolve(tempDir, 'kibana.log');
-          const logPathArchived = Path.resolve(tempDir, 'kibana_archive.log');
-
-          createConfigManager(configFilePath).modify(oldConfig => {
-            oldConfig.logging.appenders.file.path = logPath;
-            return oldConfig;
-          });
-
-          child = Child.spawn(process.execPath, [kibanaPath, '--oss', '--config', configFilePath]);
-
-          await watchFileUntil(logPath, /setting up root/, 30 * second);
-          // once the server is running, archive the log file and issue SIGHUP
-          Fs.renameSync(logPath, logPathArchived);
-          child.kill('SIGHUP');
-
-          await watchFileUntil(
-            logPath,
-            /Reloaded logging configuration due to SIGHUP/,
-            30 * second
-          );
-        },
-        minute
-      );
-    });
+    return;
   }
+
+  describe('legacy logging', () => {
+    it(
+      'should be reloadable via SIGHUP process signaling',
+      async function() {
+        const configFilePath = Path.resolve(tempDir, 'kibana.yml');
+        Fs.copyFileSync(legacyConfig, configFilePath);
+
+        child = Child.spawn(process.execPath, [
+          kibanaPath,
+          '--oss',
+          '--config',
+          configFilePath,
+          '--verbose',
+        ]);
+
+        const message$ = Rx.fromEvent(child.stdout, 'data').pipe(
+          map(messages =>
+            String(messages)
+              .split('\n')
+              .filter(Boolean)
+          )
+        );
+
+        await message$
+          .pipe(
+            // We know the sighup handler will be registered before this message logged
+            filter(messages => messages.some(m => m.includes('setting up root'))),
+            take(1)
+          )
+          .toPromise();
+
+        const lastMessage = await message$.pipe(take(1)).toPromise();
+        expect(containsJsonOnly(lastMessage)).toBe(true);
+
+        createConfigManager(configFilePath).modify(oldConfig => {
+          oldConfig.logging.json = false;
+          return oldConfig;
+        });
+
+        child.kill('SIGHUP');
+
+        await message$
+          .pipe(
+            filter(messages => !containsJsonOnly(messages)),
+            take(1)
+          )
+          .toPromise();
+      },
+      minute
+    );
+
+    it(
+      'should recreate file handle on SIGHUP',
+      async function() {
+        const logPath = Path.resolve(tempDir, 'kibana.log');
+        const logPathArchived = Path.resolve(tempDir, 'kibana_archive.log');
+
+        child = Child.spawn(process.execPath, [
+          kibanaPath,
+          '--oss',
+          '--config',
+          legacyConfig,
+          '--logging.dest',
+          logPath,
+          '--verbose',
+        ]);
+
+        await watchFileUntil(logPath, /setting up root/, 30 * second);
+        // once the server is running, archive the log file and issue SIGHUP
+        Fs.renameSync(logPath, logPathArchived);
+        child.kill('SIGHUP');
+
+        await watchFileUntil(logPath, /Reloaded logging configuration due to SIGHUP/, 30 * second);
+      },
+      minute
+    );
+  });
+
+  describe('platform logging', () => {
+    it(
+      'should be reloadable via SIGHUP process signaling',
+      async function() {
+        const configFilePath = Path.resolve(tempDir, 'kibana.yml');
+        Fs.copyFileSync(configFileLogConsole, configFilePath);
+
+        child = Child.spawn(process.execPath, [kibanaPath, '--oss', '--config', configFilePath]);
+
+        const message$ = Rx.fromEvent(child.stdout, 'data').pipe(
+          map(messages =>
+            String(messages)
+              .split('\n')
+              .filter(Boolean)
+          )
+        );
+
+        await message$
+          .pipe(
+            // We know the sighup handler will be registered before this message logged
+            filter(messages => messages.some(m => m.includes('setting up root'))),
+            take(1)
+          )
+          .toPromise();
+
+        const lastMessage = await message$.pipe(take(1)).toPromise();
+        expect(containsJsonOnly(lastMessage)).toBe(true);
+
+        createConfigManager(configFilePath).modify(oldConfig => {
+          oldConfig.logging.appenders.console.layout.kind = 'pattern';
+          return oldConfig;
+        });
+        child.kill('SIGHUP');
+
+        await message$
+          .pipe(
+            filter(messages => !containsJsonOnly(messages)),
+            take(1)
+          )
+          .toPromise();
+      },
+      30 * second
+    );
+    it(
+      'should recreate file handle on SIGHUP',
+      async function() {
+        const configFilePath = Path.resolve(tempDir, 'kibana.yml');
+        Fs.copyFileSync(configFileLogFile, configFilePath);
+
+        const logPath = Path.resolve(tempDir, 'kibana.log');
+        const logPathArchived = Path.resolve(tempDir, 'kibana_archive.log');
+
+        createConfigManager(configFilePath).modify(oldConfig => {
+          oldConfig.logging.appenders.file.path = logPath;
+          return oldConfig;
+        });
+
+        child = Child.spawn(process.execPath, [kibanaPath, '--oss', '--config', configFilePath]);
+
+        await watchFileUntil(logPath, /setting up root/, 30 * second);
+        // once the server is running, archive the log file and issue SIGHUP
+        Fs.renameSync(logPath, logPathArchived);
+        child.kill('SIGHUP');
+
+        await watchFileUntil(logPath, /Reloaded logging configuration due to SIGHUP/, 30 * second);
+      },
+      minute
+    );
+  });
 });
diff --git a/src/dev/npm/integration_tests/installed_packages.test.ts b/src/dev/npm/integration_tests/installed_packages.test.ts
index 5c942005d2eee..75cd0e5607698 100644
--- a/src/dev/npm/integration_tests/installed_packages.test.ts
+++ b/src/dev/npm/integration_tests/installed_packages.test.ts
@@ -41,7 +41,7 @@ describe('src/dev/npm/installed_packages', () => {
           includeDev: true,
         }),
       ]);
-    }, 60 * 1000);
+    }, 360 * 1000);
 
     it('reads all installed packages of a module', () => {
       expect(fixture1Packages).toEqual([
diff --git a/tasks/test_jest.js b/tasks/test_jest.js
index ff1a941610ad9..bcb05a83675e5 100644
--- a/tasks/test_jest.js
+++ b/tasks/test_jest.js
@@ -33,7 +33,7 @@ module.exports = function(grunt) {
   function runJest(jestScript) {
     const serverCmd = {
       cmd: 'node',
-      args: [jestScript, '--ci'],
+      args: [jestScript, '--ci', '--detectOpenHandles'],
       opts: { stdio: 'inherit' },
     };
 
diff --git a/test/scripts/jenkins_xpack.sh b/test/scripts/jenkins_xpack.sh
index 3d30496ecb582..b629e064b39b5 100755
--- a/test/scripts/jenkins_xpack.sh
+++ b/test/scripts/jenkins_xpack.sh
@@ -11,7 +11,7 @@ if [[ -z "$CODE_COVERAGE" ]] ; then
 
   echo " -> Running jest tests"
   cd "$XPACK_DIR"
-  checks-reporter-with-killswitch "X-Pack Jest" node scripts/jest --ci --verbose
+  checks-reporter-with-killswitch "X-Pack Jest" node scripts/jest --ci --verbose --detectOpenHandles
   echo ""
   echo ""