From: Brandt Bucher <brandtbucher@microsoft.com>
Date: Wed, 4 Dec 2024 23:01:28 +0000 (-0800)
Subject: GH-126795: Increase the JIT side-exit threshold from 64 to 4096 (GH-127155)
X-Git-Tag: v3.14.0a3~121
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=94b8f8b40943bf38cf5c454773a3fb8f4ff71e01;p=thirdparty%2FPython%2Fcpython.git

GH-126795: Increase the JIT side-exit threshold from 64 to 4096 (GH-127155)
---

diff --git a/Include/internal/pycore_backoff.h b/Include/internal/pycore_backoff.h
index 3e0272852282..b5e33fa8b7ab 100644
--- a/Include/internal/pycore_backoff.h
+++ b/Include/internal/pycore_backoff.h
@@ -115,10 +115,9 @@ initial_jump_backoff_counter(void)
 /* Initial exit temperature.
  * Must be larger than ADAPTIVE_COOLDOWN_VALUE,
  * otherwise when a side exit warms up we may construct
- * a new trace before the Tier 1 code has properly re-specialized.
- * Backoff sequence 64, 128, 256, 512, 1024, 2048, 4096. */
-#define SIDE_EXIT_INITIAL_VALUE 63
-#define SIDE_EXIT_INITIAL_BACKOFF 6
+ * a new trace before the Tier 1 code has properly re-specialized. */
+#define SIDE_EXIT_INITIAL_VALUE 4095
+#define SIDE_EXIT_INITIAL_BACKOFF 12
 
 static inline _Py_BackoffCounter
 initial_temperature_backoff_counter(void)