https://git.ruby-lang.org/ruby.git/commit/?id=028f1887c2

From 028f1887c2bfa50dcfc1b623470d6ab1b880fdde Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@g...>
Date: Mon, 31 May 2021 22:00:14 -0700
Subject: Change the default --jit-max-cache to 10000

This is useful for large applications like Rails.
https://k0kubun.medium.com/ruby-3-jit-can-make-rails-faster-756310f235a
---
 NEWS.md       | 5 ++++-
 mjit.c        | 2 +-
 mjit_worker.c | 4 ++--
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/NEWS.md b/NEWS.md
index ac8c30d..6691a0d 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -134,7 +134,9 @@ Excluding feature bug fixes. https://github.com/ruby/ruby/blob/trunk/NEWS.md#L134
 
 ### JIT
 
-* `RubyVM::MJIT` is renamed to `RubyVM::JIT`.
+* The default `--jit-max-cache` is changed from 100 to 10000.
+
+* `RubyVM::MJIT` is renamed to `RubyVM::JIT`. [[Feature #17490]]
 
 ## Static analysis
 
@@ -162,5 +164,6 @@ Excluding feature bug fixes. https://github.com/ruby/ruby/blob/trunk/NEWS.md#L164
 [Feature #17411]: https://bugs.ruby-lang.org/issues/17411
 [Bug #17423]: https://bugs.ruby-lang.org/issues/17423
 [Feature #17479]: https://bugs.ruby-lang.org/issues/17479
+[Feature #17490]: https://bugs.ruby-lang.org/issues/17490
 [Feature #17744]: https://bugs.ruby-lang.org/issues/17744
 [Feature #17762]: https://bugs.ruby-lang.org/issues/17762
diff --git a/mjit.c b/mjit.c
index e1eb913..035353d 100644
--- a/mjit.c
+++ b/mjit.c
@@ -598,7 +598,7 @@ system_tmpdir(void) https://github.com/ruby/ruby/blob/trunk/mjit.c#L598
 // Minimum value for JIT cache size.
 #define MIN_CACHE_SIZE 10
 // Default permitted number of units with a JIT code kept in memory.
-#define DEFAULT_MAX_CACHE_SIZE 100
+#define DEFAULT_MAX_CACHE_SIZE 10000
 // A default threshold used to add iseq to JIT.
 #define DEFAULT_MIN_CALLS_TO_ADD 10000
 
diff --git a/mjit_worker.c b/mjit_worker.c
index 306c8cb..6d9ce69 100644
--- a/mjit_worker.c
+++ b/mjit_worker.c
@@ -1396,9 +1396,9 @@ unload_units(void) https://github.com/ruby/ruby/blob/trunk/mjit_worker.c#L1396
 void
 mjit_worker(void)
 {
-    // Allow only `max_cache_size / 10` times (default: 10) of compaction.
+    // Allow only `max_cache_size / 100` times (default: 100) of compaction.
     // Note: GC of compacted code has not been implemented yet.
-    int max_compact_size = mjit_opts.max_cache_size / 10;
+    int max_compact_size = mjit_opts.max_cache_size / 100;
     if (max_compact_size < 10) max_compact_size = 10;
 
     // Run unload_units after it's requested `max_cache_size / 10` (default: 10) times.
-- 
cgit v1.1


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