The following tests take >1s:

• TestReleaseOnCancellation_ConfigMaps 1.00s
• TestReleaseOnCancellation_Endpoints 1.00s
• TestReleaseOnCancellation_Leases 1.00s
• TestTokenExchangePluginWithCache 1.00s
• Test_tokenSupplier_GetRequestMetadata 1.00s
• TestRunComponentsAfterStart/RunComponentAsyncAndWait 1.01s
• TestSleepCheckInstall 1.01s
• TestStsCache 1.01s
• TestGetFederatedToken 1.02s
• TestRunComponentsAfterStart 1.02s
• TestGetCNIConfigFilepath 1.03s
• TestSendPushesManyPushes 1.03s
• TestClient 1.06s
• TestStsFlow 1.06s
• TestTrailingWhitespace 1.06s
• TestLeaderElectionNoPermission 1.08s
• TestSDS 1.08s
• TestWorkloadAgentGenerateSecret/no_plugin 1.09s
• TestAdsPushScoping/Add_an_unmatched_Sidecar_config 1.10s
• TestAdsPushScoping/Add_a_unscopedname_not_match_service 1.10s
• TestAdsPushScoping/Add_a_unscopedns_not_match_service 1.10s
• TestAdsPushScoping/Add_destination_rule_to_an_unscoped_service 1.10s
• TestAdsPushScoping/Add_instances_to_an_unscoped_service 1.10s
• TestAdsPushScoping/Add_virtual_service_to_an_unscoped_service 1.10s
• TestAdsPushScoping/Delete_destination_rule_of_a_unscoped_service 1.10s
• TestAdsPushScoping/Delete_virtual_service_of_a_unscoped_service 1.10s
• TestAdsPushScoping/Remove_a_unscopedname_not_match_service 1.10s
• TestAdsPushScoping/Remove_a_unscopedns_not_match_service 1.10s
• TestTokenExchangePlugin 1.15s
• TestSidecarTemplate/sidecar_template 1.18s
• TestStartEnvoyShouldSucceed 1.22s
• TestInstallPackagePath/install_package_path#02 1.23s
• TestJwtPubKeyRefreshWithNetworkError 1.25s
• TestAgent/Token_exchange_with_credential_fetcher_downtime 1.32s
• TestGetProxyServiceInstancesWithMultiIPsAndTargetPorts 1.32s
• TestInstallPackagePath/install_package_path 1.36s
• TestWorkloadAgentGenerateSecret 1.38s
• TestScrtUpdated 1.40s
• TestInstallPackagePath/install_package_path#01 1.41s
• TestAutoregistrationLifecycle/garbage_collected_if_pilot_stops_after_disconnect 1.50s
• TestNetworkUpdateTriggers 1.51s
• TestCitadelClient 1.53s
• TestCitadelClient/retry 1.53s
• TestInstall 1.60s
• TestHotRestart 1.62s
• TestExtraConfigmap 1.63s
• TestEds 1.81s
• TestGenerateMutatingWebhook 1.85s
• TestAutoregistrationLifecycle/garbage_collected_if_pilot_and_workload_stops_simultaneously_before_pilot_can_do_anything 2.00s
• TestTcpEchoServer 2.00s
• TestUpdateAll 2.00s
• TestWaitCmd/case_0_x_wait_--generation=2_--timeout=2s_virtual-service_foo.default 2.00s
• TestGoogleCASClient 2.01s
• TestIstiodCipherSuites/client_and_istiod_cipher_suites_mismatch 2.01s
• TestWaitCmd/case_4_x_wait_--timeout_2s_virtual-service_bar.default 2.02s
• TestWasmHTTPFetch/download_retry 2.04s
• TestConfigSelectors 2.12s
• TestEndpointSliceFromMCSShouldBeIgnored 2.12s
• TestCheckDuplicateCSR 2.50s
• TestSignCSR 2.53s
• TestIstiodCipherSuites/client_and_istiod_cipher_suites_match 2.54s
• TestNewServer 2.62s
• TestProxyCachedToken 2.76s
• TestAddMeshConfigUpdate 2.92s
• TestGatewayHostnames 3.00s
• TestGatewayHostnames/re-resolve_after_TTL 3.00s
• TestReadSignedCertificate 3.00s
• TestGoogleCAClient 3.05s
• TestWebhookSelector 3.18s
• TestProxySTS 3.27s
• TestIstiodCipherSuites/default_cipher_suites 3.29s
• TestGenCertKeyFromOptions 3.51s
• TestAutoregistrationLifecycle 4.01s
• TestWaitCmd 4.03s
• TestServerCachedToken 4.49s
• TestServerShortLivedCachedToken 4.55s
• TestK8sSign 5.00s
• TestWasmCache/download_failure 5.41s
• TestWasmCache 5.46s
• TestAgent 5.74s
• TestWasmHTTPFetch/download_max_retry 6.02s
• TestRenewToken 7.64s
• TestIstiodCipherSuites 7.84s
• TestWasmHTTPFetch 8.07s
• TestTokenFetchFailureTwo 11.02s
• TestTokenFetchFailureOne 11.06s
• TestAdsPushScoping 12.46s https://github.com/istio/istio/pull/37572/files
• TestTokenFetchTimeoutTwo 14.02s
• TestTokenFetchTimeoutOne 14.05s
• TestK8sSignWithMeshConfig 25.01s Speed up TestK8sSignWithMeshConfig #37640

These should be optimized.

It is recommended to run https://github.com/istio/istio/wiki/Test-Flakes#reproducing-test-flakes locally before fixing anything to ensure that changes (such as lowering timeouts, etc) do not make things flaky.