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* gc.c: allow to tune growth of heap by environment variable

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RUBY_HEAP_SLOTS_GROWTH_FACTOR. patched by tmm1(Aman Gupta).
  [Feature #8015] [ruby-core:53131]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39746 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nari 2013-03-13 14:52:00 +00:00
parent b1f2460f8d
commit 2f7ca893a3
3 changed files with 29 additions and 2 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
Wed Mar 13 23:25:59 2013 Narihiro Nakamura <authornari@gmail.com>
* gc.c: allow to tune growth of heap by environment variable
RUBY_HEAP_SLOTS_GROWTH_FACTOR. patched by tmm1(Aman Gupta).
[Feature #8015] [ruby-core:53131]
Wed Mar 13 19:43:46 2013 Kazuhiro NISHIYAMA <zn@mbf.nifty.com>
* doc/irb/irb.rd.ja: fix typo

19
gc.c
View file

@ -71,11 +71,13 @@
#endif
#define HEAP_MIN_SLOTS 10000
#define FREE_MIN 4096
#define HEAP_GROWTH_FACTOR 1.8
typedef struct {
unsigned int initial_malloc_limit;
unsigned int initial_heap_min_slots;
unsigned int initial_free_min;
double initial_growth_factor;
#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
int gc_stress;
#endif
@ -85,6 +87,7 @@ static ruby_gc_params_t initial_params = {
GC_MALLOC_LIMIT,
HEAP_MIN_SLOTS,
FREE_MIN,
HEAP_GROWTH_FACTOR,
#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
FALSE,
#endif
@ -287,6 +290,7 @@ int *ruby_initial_gc_stress_ptr = &rb_objspace.gc_stress;
#define initial_malloc_limit initial_params.initial_malloc_limit
#define initial_heap_min_slots initial_params.initial_heap_min_slots
#define initial_free_min initial_params.initial_free_min
#define initial_growth_factor initial_params.initial_growth_factor
#define is_lazy_sweeping(objspace) ((objspace)->heap.sweep_slots != 0)
@ -605,7 +609,7 @@ initial_expand_heap(rb_objspace_t *objspace)
static void
set_heaps_increment(rb_objspace_t *objspace)
{
size_t next_heaps_length = (size_t)(heaps_used * 1.8);
size_t next_heaps_length = (size_t)(heaps_used * initial_growth_factor);
if (next_heaps_length == heaps_used) {
next_heaps_length++;
@ -3290,7 +3294,7 @@ rb_gc_disable(void)
void
rb_gc_set_params(void)
{
char *malloc_limit_ptr, *heap_min_slots_ptr, *free_min_ptr;
char *malloc_limit_ptr, *heap_min_slots_ptr, *free_min_ptr, *growth_factor_ptr;
if (rb_safe_level() > 0) return;
@ -3317,6 +3321,17 @@ rb_gc_set_params(void)
}
}
growth_factor_ptr = getenv("RUBY_HEAP_SLOTS_GROWTH_FACTOR");
if (growth_factor_ptr != NULL) {
double growth_factor_f = strtod(growth_factor_ptr, NULL);
if (RTEST(ruby_verbose))
fprintf(stderr, "heap_slots_growth_factor=%f (%f)\n",
growth_factor_f, initial_growth_factor);
if (growth_factor_f > 1) {
initial_growth_factor = growth_factor_f;
}
}
free_min_ptr = getenv("RUBY_FREE_MIN");
if (free_min_ptr != NULL) {
int free_min_i = atoi(free_min_ptr);

6
test/ruby/test_gc.rb
View file

@ -108,6 +108,12 @@ class TestGc < Test::Unit::TestCase
assert_in_out_err([env, "-W0", "-e", "exit"], "", [], [], "[ruby-core:39795]")
assert_in_out_err([env, "-W1", "-e", "exit"], "", [], [], "[ruby-core:39795]")
assert_in_out_err([env, "-w", "-e", "exit"], "", [], /heap_min_slots=100000/, "[ruby-core:39795]")
env = {
"RUBY_HEAP_SLOTS_GROWTH_FACTOR" => "2.0"
}
assert_normal_exit("exit", "", :child_env => env)
assert_in_out_err([env, "-w", "-e", "exit"], "", [], /heap_slots_growth_factor=2.0/, "")
end
def test_profiler_enabled