diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 276c71c6e0..810c61de2d 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -474,7 +474,7 @@ jobs:
           TEST_RESULT_CONNSTR: ${{ secrets.REGRESS_TEST_RESULT_CONNSTR_NEW }}
           CHECK_ONDISK_DATA_COMPATIBILITY: nonempty
           BUILD_TAG: ${{ needs.tag.outputs.build-tag }}
-          PAGESERVER_VIRTUAL_FILE_IO_ENGINE: std-fs
+          PAGESERVER_VIRTUAL_FILE_IO_ENGINE: tokio-epoll-uring
           PAGESERVER_GET_VECTORED_IMPL: vectored
 
       # Temporary disable this step until we figure out why it's so flaky
@@ -554,7 +554,7 @@ jobs:
           VIP_VAP_ACCESS_TOKEN: "${{ secrets.VIP_VAP_ACCESS_TOKEN }}"
           PERF_TEST_RESULT_CONNSTR: "${{ secrets.PERF_TEST_RESULT_CONNSTR }}"
           TEST_RESULT_CONNSTR: "${{ secrets.REGRESS_TEST_RESULT_CONNSTR_NEW }}"
-          PAGESERVER_VIRTUAL_FILE_IO_ENGINE: std-fs
+          PAGESERVER_VIRTUAL_FILE_IO_ENGINE: tokio-epoll-uring
       # XXX: no coverage data handling here, since benchmarks are run on release builds,
       # while coverage is currently collected for the debug ones
 
diff --git a/pageserver/src/config.rs b/pageserver/src/config.rs
index 437387164d..4adcedafd1 100644
--- a/pageserver/src/config.rs
+++ b/pageserver/src/config.rs
@@ -83,6 +83,10 @@ pub mod defaults {
 
     pub const DEFAULT_INGEST_BATCH_SIZE: u64 = 100;
 
+    #[cfg(target_os = "linux")]
+    pub const DEFAULT_VIRTUAL_FILE_IO_ENGINE: &str = "tokio-epoll-uring";
+
+    #[cfg(not(target_os = "linux"))]
     pub const DEFAULT_VIRTUAL_FILE_IO_ENGINE: &str = "std-fs";
 
     pub const DEFAULT_GET_VECTORED_IMPL: &str = "sequential";
diff --git a/scripts/flaky_tests.py b/scripts/flaky_tests.py
index 61a97f520d..4464f09c29 100755
--- a/scripts/flaky_tests.py
+++ b/scripts/flaky_tests.py
@@ -15,7 +15,8 @@ FLAKY_TESTS_QUERY = """
         DISTINCT parent_suite, suite, name
     FROM results
     WHERE
-        started_at > CURRENT_DATE - INTERVAL '%s' day
+        started_at > CURRENT_DATE - INTERVAL '10' day
+        AND started_at > '2024-03-11 11:32:12.874+00' -- TODO(update the date in a separate PR): we switched the default PAGESERVER_VIRTUAL_FILE_IO_ENGINE to `tokio-epoll-uring` from `std-fs` on this date, we want to ignore the flaky tests for `std-fs`
         AND (
             (status IN ('failed', 'broken') AND reference = 'refs/heads/main')
             OR flaky
@@ -46,11 +47,14 @@ def main(args: argparse.Namespace):
         logging.error("cannot fetch flaky tests from the DB due to an error", exc)
         rows = []
 
-    # If a test run has non-default PAGESERVER_VIRTUAL_FILE_IO_ENGINE (i.e. not empty, not std-fs),
+    # If a test run has non-default PAGESERVER_VIRTUAL_FILE_IO_ENGINE (i.e. not empty, not tokio-epoll-uring),
     # use it to parametrize test name along with build_type and pg_version
     #
     # See test_runner/fixtures/parametrize.py for details
-    if (io_engine := os.getenv("PAGESERVER_VIRTUAL_FILE_IO_ENGINE", "")) not in ("", "std-fs"):
+    if (io_engine := os.getenv("PAGESERVER_VIRTUAL_FILE_IO_ENGINE", "")) not in (
+        "",
+        "tokio-epoll-uring",
+    ):
         pageserver_virtual_file_io_engine_parameter = f"-{io_engine}"
     else:
         pageserver_virtual_file_io_engine_parameter = ""
diff --git a/test_runner/fixtures/parametrize.py b/test_runner/fixtures/parametrize.py
index 57ca1932b0..b28da83508 100644
--- a/test_runner/fixtures/parametrize.py
+++ b/test_runner/fixtures/parametrize.py
@@ -46,9 +46,12 @@ def pytest_generate_tests(metafunc: Metafunc):
 
     metafunc.parametrize("pg_version", pg_versions, ids=map(lambda v: f"pg{v}", pg_versions))
 
-    # A hacky way to parametrize tests only for `pageserver_virtual_file_io_engine=tokio-epoll-uring`
-    # And do not change test name for default `pageserver_virtual_file_io_engine=std-fs` to keep tests statistics
-    if (io_engine := os.getenv("PAGESERVER_VIRTUAL_FILE_IO_ENGINE", "")) not in ("", "std-fs"):
+    # A hacky way to parametrize tests only for `pageserver_virtual_file_io_engine=std-fs`
+    # And do not change test name for default `pageserver_virtual_file_io_engine=tokio-epoll-uring` to keep tests statistics
+    if (io_engine := os.getenv("PAGESERVER_VIRTUAL_FILE_IO_ENGINE", "")) not in (
+        "",
+        "tokio-epoll-uring",
+    ):
         metafunc.parametrize("pageserver_virtual_file_io_engine", [io_engine])
 
     # For performance tests, parametrize also by platform