Change default call threshold to 30

.github/workflows/mjit.yml

@@ -30,7 +30,7 @@ jobs:
       matrix:
         # main variables included in the job name
         test_task: [check]
-        run_opts: ['--mjit']
+        run_opts: ['--mjit-call-threshold=1']
         arch: ['']
       fail-fast: false
     env:

mjit.c

@@ -187,7 +187,7 @@ rb_mjit_recompile_const(const rb_iseq_t *iseq)
 // Default permitted number of units with a JIT code kept in memory.
 #define DEFAULT_MAX_CACHE_SIZE 100
 // A default threshold used to add iseq to JIT.
-#define DEFAULT_CALL_THRESHOLD 1
+#define DEFAULT_CALL_THRESHOLD 30
 
 #define opt_match_noarg(s, l, name) \
     opt_match(s, l, name) && (*(s) ? (rb_warn("argument to --mjit-" name " is ignored"), 1) : 1)