diff --git a/pandas/conftest.py b/pandas/conftest.py
index be28dbe35fcb2..76d814747411f 100644
--- a/pandas/conftest.py
+++ b/pandas/conftest.py
@@ -182,6 +182,27 @@ def pytest_collection_modifyitems(items, config):
 # ----------------------------------------------------------------
 # Autouse fixtures
 # ----------------------------------------------------------------
+# pat = re.compile(r"python")
+#
+#
+# @pytest.fixture(autouse=True)
+# def lsof_check(request):
+#     yield
+#     # https://github.com/matplotlib/matplotlib/issues/22017#issuecomment-998241017
+#     if "matplotlib" in sys.modules:
+#         import matplotlib
+#
+#         matplotlib.font_manager._get_font.cache_clear()
+#     lsof = subprocess.run(["lsof", "-d", "0-25"], capture_output=True).stdout.decode(
+#         "utf-8"
+#     )
+#     for line in lsof.split("\n"):
+#         if re.search(pat, line):
+#             # sys.stderr for xdist
+#             # https://github.com/pytest-dev/pytest/issues/1693#issuecomment-233282644
+#             print(f"{request.node.name}: {line}", flush=True, file=sys.stderr)
+
+
 @pytest.fixture(autouse=True)
 def configure_tests():
     """
diff --git a/pandas/tests/api/test_types.py b/pandas/tests/api/test_types.py
index 7b6cc9412e03d..5e5e829db9be1 100644
--- a/pandas/tests/api/test_types.py
+++ b/pandas/tests/api/test_types.py
@@ -1,3 +1,5 @@
+import subprocess
+
 import pandas._testing as tm
 from pandas.api import types
 from pandas.tests.api.test_api import Base
@@ -57,7 +59,7 @@ def test_types(self):
         self.check(types, self.allowed + self.dtypes + self.deprecated)
 
     def test_deprecated_from_api_types(self):
-
+        subprocess.check_output(["lsof", "-d", "0-25", "-F", "n"]).decode("utf-8")
         for t in self.deprecated:
             with tm.assert_produces_warning(FutureWarning):
                 getattr(types, t)(1)
diff --git a/pandas/tests/io/formats/style/test_matplotlib.py b/pandas/tests/io/formats/style/test_matplotlib.py
index a350b6fe7546d..fde9dfb189786 100644
--- a/pandas/tests/io/formats/style/test_matplotlib.py
+++ b/pandas/tests/io/formats/style/test_matplotlib.py
@@ -1,17 +1,16 @@
 import numpy as np
 import pytest
 
+import pandas.util._test_decorators as td
+
 from pandas import (
     DataFrame,
     IndexSlice,
     Series,
 )
 
-pytest.importorskip("matplotlib")
 pytest.importorskip("jinja2")
 
-import matplotlib as mpl
-
 from pandas.io.formats.style import Styler
 
 
@@ -260,18 +259,23 @@ def test_background_gradient_gmap_wrong_series(styler_blank):
         styler_blank.background_gradient(gmap=gmap, axis=None)._compute()
 
 
-@pytest.mark.parametrize("cmap", ["PuBu", mpl.cm.get_cmap("PuBu")])
-def test_bar_colormap(cmap):
-    data = DataFrame([[1, 2], [3, 4]])
-    ctx = data.style.bar(cmap=cmap, axis=None)._compute().ctx
-    pubu_colors = {
-        (0, 0): "#d0d1e6",
-        (1, 0): "#056faf",
-        (0, 1): "#73a9cf",
-        (1, 1): "#023858",
-    }
-    for k, v in pubu_colors.items():
-        assert v in ctx[k][1][1]
+@td.skip_if_no_mpl
+def test_bar_colormap():
+    import matplotlib as mpl
+
+    for cmap in ["PuBu", mpl.cm.get_cmap("PuBu")]:
+        data = DataFrame([[1, 2], [3, 4]])
+        ctx = data.style.bar(cmap=cmap, axis=None)._compute().ctx
+        pubu_colors = {
+            (0, 0): "#d0d1e6",
+            (1, 0): "#056faf",
+            (0, 1): "#73a9cf",
+            (1, 1): "#023858",
+        }
+        for k, v in pubu_colors.items():
+            assert v in ctx[k][1][1]
+    # https://github.com/matplotlib/matplotlib/issues/22017#issuecomment-998241017
+    mpl.font_manager._get_font.cache_clear()
 
 
 def test_bar_color_raises(df):
diff --git a/pandas/tests/io/formats/test_to_excel.py b/pandas/tests/io/formats/test_to_excel.py
index 968ad63eaceef..da77ad82a311d 100644
--- a/pandas/tests/io/formats/test_to_excel.py
+++ b/pandas/tests/io/formats/test_to_excel.py
@@ -326,8 +326,12 @@ def tests_css_named_colors_valid():
 
 @td.skip_if_no_mpl
 def test_css_named_colors_from_mpl_present():
-    from matplotlib.colors import CSS4_COLORS as mpl_colors
+    import matplotlib as mpl
 
+    mpl_colors = mpl.colors.CSS4_COLORS
     pd_colors = CSSToExcelConverter.NAMED_COLORS
     for name, color in mpl_colors.items():
         assert name in pd_colors and pd_colors[name] == color[1:]
+
+    # https://github.com/matplotlib/matplotlib/issues/22017#issuecomment-998241017
+    mpl.font_manager._get_font.cache_clear()