[GR-53612] Fix RssPercentilesTracker if python3 is not on the path.

PullRequest: mx/1789

common.json

@@ -4,7 +4,7 @@
     "Jsonnet files should not include this file directly but use ci/common.jsonnet instead."
   ],
 
-  "mx_version": "7.22.3",
+  "mx_version": "7.22.6",
 
   "COMMENT.jdks": "When adding or removing JDKs keep in sync with JDKs in ci/common.jsonnet",
   "jdks": {

src/mx/_impl/mx.py

@@ -18149,7 +18149,7 @@ def alarm_handler(signum, frame):
 _CACHE_DIR = get_env('MX_CACHE_DIR', join(dot_mx_dir(), 'cache'))
 
 # The version must be updated for every PR (checked in CI) and the comment should reflect the PR's issue
-version = VersionSpec("7.22.6")  # Stop MaxRssCopyRule of the rsspercentiles tracker from rerunning
+version = VersionSpec("7.22.7")  # Use current python for rsspercentiles
 
 _mx_start_datetime = datetime.utcnow()
 

src/mx/_impl/mx_benchmark.py

@@ -2921,7 +2921,7 @@ def map_command(self, cmd):
 
         self.most_recent_text_output = text_output
         ps_poller_script_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), "ps_poller.py")
-        return ["python3", ps_poller_script_path, "-f", text_output, "-i", str(RssPercentilesTracker.poll_interval)] + cmd
+        return [sys.executable, ps_poller_script_path, "-f", text_output, "-i", str(RssPercentilesTracker.poll_interval)] + cmd
 
     def get_rules(self, bmSuiteArgs):
         if self.copy_into_max_rss: