diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index aaa12efb8..eb65a8838 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1020,6 +1020,9 @@ jobs:
       - name: Run perf count checker
         run: |
           python3 scripts/run_perf_counter.py --required-tests-number=2
+        env:
+          OMP_NUM_THREADS: 2
+          PROC_COUNT: 2
       - name: Run perf tests
         run: |
           bash -e scripts/generate_perf_results.sh
diff --git a/scripts/create_perf_table.py b/scripts/create_perf_table.py
index 627f2a8fb..b59d78621 100644
--- a/scripts/create_perf_table.py
+++ b/scripts/create_perf_table.py
@@ -2,7 +2,6 @@
 import os
 import re
 import xlsxwriter
-import multiprocessing
 
 parser = argparse.ArgumentParser()
 parser.add_argument('-i', '--input', help='Input file path (logs of perf tests, .txt)', required=True)
@@ -50,7 +49,10 @@
     worksheet.set_column('A:Z', 23)
     right_bold_border = workbook.add_format({'bold': True, 'right': 2, 'bottom': 2})
     bottom_bold_border = workbook.add_format({'bold': True, 'bottom': 2})
-    cpu_num = multiprocessing.cpu_count()
+    cpu_num = os.environ.get("PROC_COUNT")
+    if cpu_num is None:
+        raise EnvironmentError("Required environment variable 'PROC_COUNT' is not set.")
+    cpu_num = int(cpu_num)
     worksheet.write(0, 0, "cpu_num = " + str(cpu_num), right_bold_border)
 
     it = 1
diff --git a/scripts/run_tests.py b/scripts/run_tests.py
index 443eb3db7..a65d2a923 100644
--- a/scripts/run_tests.py
+++ b/scripts/run_tests.py
@@ -87,11 +87,10 @@ def run_processes(self, additional_mpi_args):
 
     def run_performance(self):
         if not os.environ.get("ASAN_RUN"):
-            mpi_running = ""
-            if platform.system() in ("Linux", "Windows"):
-                mpi_running = f"{self.mpi_exec} -np 4"
-            elif platform.system() == "Darwin":
-                mpi_running = f"{self.mpi_exec} -np 2"
+            proc_count = os.environ.get("PROC_COUNT")
+            if proc_count is None:
+                raise EnvironmentError("Required environment variable 'PROC_COUNT' is not set.")
+            mpi_running = f"{self.mpi_exec} -np {proc_count}"
             self.__run_exec(f"{mpi_running} {self.work_dir / 'all_perf_tests'} {self.__get_gtest_settings(1)}")
             self.__run_exec(f"{mpi_running} {self.work_dir / 'mpi_perf_tests'} {self.__get_gtest_settings(1)}")