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* gc.c: add GC parameters to configure the following values:

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* RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO:
    allocate additional pages when free slots is lower than
    the value (total_slots * (this ratio)).
  * RUBY_GC_HEAP_FREE_SLOTS_MAX_RATIO:
    allow to free pages when free slots is greater thatn
    the value (total_slots * (this ratio)).

  Before this change, these values are hard coded.

* gc.c (ruby_gc_params_t): ditto.

* gc.c (ruby_gc_set_params): ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54450 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ko1 2016-03-31 07:45:13 +00:00
parent fb296fe6fe
commit 555f6cb089
2 changed files with 38 additions and 2 deletions
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16
ChangeLog
View file

@ -1,3 +1,19 @@
Thu Mar 31 16:43:02 2016 Koichi Sasada <ko1@atdot.net>
* gc.c: add GC parameters to configure the following values:
* RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO:
allocate additional pages when free slots is lower than
the value (total_slots * (this ratio)).
* RUBY_GC_HEAP_FREE_SLOTS_MAX_RATIO:
allow to free pages when free slots is greater thatn
the value (total_slots * (this ratio)).
Before this change, these values are hard coded.
* gc.c (ruby_gc_params_t): ditto.
* gc.c (ruby_gc_set_params): ditto.
Thu Mar 31 15:59:17 2016 Koichi Sasada <ko1@atdot.net>
* gc.c (gc_verify_heap_page): check the number of zombies.

24
gc.c
View file

@ -162,13 +162,19 @@ typedef struct {
size_t heap_free_slots;
double growth_factor;
size_t growth_max_slots;
double heap_free_slots_min_ratio;
double heap_free_slots_max_ratio;
double oldobject_limit_factor;
size_t malloc_limit_min;
size_t malloc_limit_max;
double malloc_limit_growth_factor;
size_t oldmalloc_limit_min;
size_t oldmalloc_limit_max;
double oldmalloc_limit_growth_factor;
VALUE gc_stress;
} ruby_gc_params_t;
@ -177,13 +183,19 @@ static ruby_gc_params_t gc_params = {
GC_HEAP_FREE_SLOTS,
GC_HEAP_GROWTH_FACTOR,
GC_HEAP_GROWTH_MAX_SLOTS,
GC_HEAP_FREE_SLOTS_MIN_RATIO,
GC_HEAP_FREE_SLOTS_MAX_RATIO,
GC_HEAP_OLDOBJECT_LIMIT_FACTOR,
GC_MALLOC_LIMIT_MIN,
GC_MALLOC_LIMIT_MAX,
GC_MALLOC_LIMIT_GROWTH_FACTOR,
GC_OLDMALLOC_LIMIT_MIN,
GC_OLDMALLOC_LIMIT_MAX,
GC_OLDMALLOC_LIMIT_GROWTH_FACTOR,
FALSE,
};
@ -3534,11 +3546,11 @@ gc_sweep_start(rb_objspace_t *objspace)
heap_pages_swept_slots = heap_allocatable_pages * HEAP_PAGE_OBJ_LIMIT;
total_limit_slot = objspace_available_slots(objspace);
heap_pages_min_free_slots = (size_t)(total_limit_slot * GC_HEAP_FREE_SLOTS_MIN_RATIO);
heap_pages_min_free_slots = (size_t)(total_limit_slot * gc_params.heap_free_slots_min_ratio);
if (heap_pages_min_free_slots < gc_params.heap_free_slots) {
heap_pages_min_free_slots = gc_params.heap_free_slots;
}
heap_pages_max_free_slots = (size_t)(total_limit_slot * GC_HEAP_FREE_SLOTS_MAX_RATIO);
heap_pages_max_free_slots = (size_t)(total_limit_slot * gc_params.heap_free_slots_max_ratio);
if (heap_pages_max_free_slots < gc_params.heap_init_slots) {
heap_pages_max_free_slots = gc_params.heap_init_slots;
}
@ -7332,6 +7344,12 @@ gc_set_initial_pages(void)
* - (next slots number) = (current slots number) * (this factor)
* * RUBY_GC_HEAP_GROWTH_MAX_SLOTS (new from 2.1)
* - Allocation rate is limited to this number of slots.
* * RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO (new from 2.4)
* - Allocate additional pages when the number of free slots is
* lower than the value (total_slots * (this ratio)).
* * RUBY_GC_HEAP_FREE_SLOTS_MAX_RATIO (new from 2.4)
* - Allow to free pages when the number of free slots is
* greater than the value (total_slots * (this ratio)).
* * RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR (new from 2.1.1)
* - Do full GC when the number of old objects is more than R * N
* where R is this factor and
@ -7374,6 +7392,8 @@ ruby_gc_set_params(int safe_level)
get_envparam_double("RUBY_GC_HEAP_GROWTH_FACTOR", &gc_params.growth_factor, 1.0);
get_envparam_size ("RUBY_GC_HEAP_GROWTH_MAX_SLOTS", &gc_params.growth_max_slots, 0);
get_envparam_double("RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO", &gc_params.heap_free_slots_min_ratio, 0.1);
get_envparam_double("RUBY_GC_HEAP_FREE_SLOTS_MAX_RATIO", &gc_params.heap_free_slots_max_ratio, 0.9);
get_envparam_double("RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR", &gc_params.oldobject_limit_factor, 0.0);
get_envparam_size ("RUBY_GC_MALLOC_LIMIT", &gc_params.malloc_limit_min, 0);