https://github.com/saltstack/pytest-system-statistics/pull/6

--- pytest-system-statistics-1.0.2/src/pytestsysstats/plugin.py.orig
+++ pytest-system-statistics-1.0.2/src/pytestsysstats/plugin.py
@@ -93,6 +93,9 @@
             if platform.is_freebsd():
                 # FreeBSD doesn't apparently support uss
                 self.sys_stats_mem_type = "rss"
+            if platform.is_sunos():
+                # Solaris and illumos doesn't apparently support uss
+                self.sys_stats_mem_type = "rss"
         else:
             self.sys_stats_mem_type = "rss"
 
--- pytest-system-statistics-1.0.2/tests/functional/test_syststats.py.orig
+++ pytest-system-statistics-1.0.2/tests/functional/test_syststats.py
@@ -96,6 +96,7 @@
 
 
 @pytest.mark.skip_on_freebsd
+@pytest.mark.skip_on_sunos
 def test_basic_sys_stats_uss(pytester):
     pytester.makepyfile(
         """