https://github.com/python/cpython/commit/94b8f8b40943bf38cf5c454773a3fb8f4ff71e01
commit: 94b8f8b40943bf38cf5c454773a3fb8f4ff71e01
branch: main
author: Brandt Bucher <[email protected]>
committer: brandtbucher <[email protected]>
date: 2024-12-04T15:01:28-08:00
summary:

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

files:
M Include/internal/pycore_backoff.h

diff --git a/Include/internal/pycore_backoff.h 
b/Include/internal/pycore_backoff.h
index 3e02728522828e..b5e33fa8b7abc0 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)

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