From c4e0c659a7b4af0d2298594f3c6fbfad7cf347da Mon Sep 17 00:00:00 2001
From: Jack Robison <jackrobison@lbry.io>
Date: Tue, 20 Aug 2019 19:22:22 -0400
Subject: [PATCH] fix missing perf_counter

---
 torba/torba/server/session.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/torba/torba/server/session.py b/torba/torba/server/session.py
index 9c5981d22..db0e6fa85 100644
--- a/torba/torba/server/session.py
+++ b/torba/torba/server/session.py
@@ -258,7 +258,7 @@ class SessionManager:
         session_timeout = self.env.session_timeout
         while True:
             await sleep(session_timeout // 10)
-            stale_cutoff = time.time() - session_timeout
+            stale_cutoff = time.perf_counter() - session_timeout
             stale_sessions = [session for session in self.sessions
                               if session.last_recv < stale_cutoff]
             if stale_sessions: