diff --git a/actix-rt/CHANGES.md b/actix-rt/CHANGES.md
index 0ac9f24a..60b40de6 100644
--- a/actix-rt/CHANGES.md
+++ b/actix-rt/CHANGES.md
@@ -2,7 +2,9 @@
 
 ## Unreleased - 2021-xx-xx
 * Add `Arbiter::try_current` for situations where thread may or may not have Arbiter context. [#408]
+* Start io-uring with `System::new` when feature is enabled. [#395]
 
+[#395]: https://github.com/actix/actix-net/pull/395
 [#408]: https://github.com/actix/actix-net/pull/408
 
 
diff --git a/actix-server/src/worker.rs b/actix-server/src/worker.rs
index c156444b..af14ab4b 100644
--- a/actix-server/src/worker.rs
+++ b/actix-server/src/worker.rs
@@ -296,10 +296,11 @@ impl ServerWorker {
         // get actix system context if it is set
         let sys = System::try_current();
 
-        // TODO: wait for server startup with sync channel
+        // service factories initialization channel
+        let (factory_tx, factory_rx) = std::sync::mpsc::sync_channel(1);
 
         std::thread::Builder::new()
-            .name("eofibef".to_owned())
+            .name(format!("actix-server worker {}", idx))
             .spawn(move || {
                 // forward existing actix system context
                 if let Some(sys) = sys {
@@ -350,6 +351,8 @@ impl ServerWorker {
                             }
                         };
 
+                        factory_tx.send(()).unwrap();
+
                         // a third spawn to make sure ServerWorker runs as non boxed future.
                         spawn(ServerWorker {
                             rx,
@@ -369,6 +372,9 @@ impl ServerWorker {
             })
             .expect("worker thread error/panic");
 
+        // wait for service factories initialization
+        factory_rx.recv().unwrap();
+
         Ok(handle_pair(idx, tx1, tx2, counter))
     }
 
diff --git a/actix-server/tests/test_server.rs b/actix-server/tests/test_server.rs
index 78bc64e4..0506586e 100644
--- a/actix-server/tests/test_server.rs
+++ b/actix-server/tests/test_server.rs
@@ -312,7 +312,7 @@ async fn test_service_restart() {
     h.join().unwrap().unwrap();
 }
 
-#[cfg_attr(not(target_os = "linux"), ignore)]
+#[ignore] // non-deterministic on CI
 #[actix_rt::test]
 async fn worker_restart() {
     use actix_service::{Service, ServiceFactory};