aboutsummaryrefslogtreecommitdiffstats
path: root/ChangeLog
diff options
context:
space:
mode:
authorko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-03-31 09:16:48 +0000
committerko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-03-31 09:16:48 +0000
commit867693fe3d803486e8571d024169ed5c2a251662 (patch)
tree58828bede2b47aa30a67b2a04b9f4128cf40e735 /ChangeLog
parent9bb740d2eca29e590275ef97dbd3c5bd26acb2f1 (diff)
downloadruby-867693fe3d803486e8571d024169ed5c2a251662.tar.gz
* gc.c: change additional allocation policy.
Introduce new environement variable GC_HEAP_FREE_SLOTS_GOAL_RATIO (goal_ratio) to calculate the ratio of additional memory. Before this change, we add pages with the following formula (when free_slots < total_pages * RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO): next_pages = total_pages * RUBY_GC_HEAP_GROWTH_FACTOR This addition can allocate too much. With this change, we increase pages to satisfy the following formula: next_free_slots = next_total_slots * goal_ratio where next_free_slots = free_slots + adding_slots next_total_slots = total_slots + adding_slots. If you want to prepare many free slots, increase this ratio. If this variable is 0, then simply multiply RUBY_GC_HEAP_GROWTH_FACTOR. * gc.c (get_envparam_double): enable to accept 0. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54453 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ChangeLog')
-rw-r--r--ChangeLog27
1 files changed, 27 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index ac21bfdafa..7486969f68 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,30 @@
+Thu Mar 31 17:50:27 2016 Koichi Sasada <ko1@atdot.net>
+
+ * gc.c: change additional allocation policy.
+
+ Introduce new environement variable
+ GC_HEAP_FREE_SLOTS_GOAL_RATIO (goal_ratio) to calculate the ratio
+ of additional memory.
+
+ Before this change, we add pages with the following formula
+ (when free_slots < total_pages * RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO):
+ next_pages = total_pages * RUBY_GC_HEAP_GROWTH_FACTOR
+
+ This addition can allocate too much.
+
+ With this change, we increase pages to satisfy the following formula:
+ next_free_slots = next_total_slots * goal_ratio
+ where
+ next_free_slots = free_slots + adding_slots
+ next_total_slots = total_slots + adding_slots.
+
+ If you want to prepare many free slots, increase this ratio.
+
+ If this variable is 0, then simply multiply
+ RUBY_GC_HEAP_GROWTH_FACTOR.
+
+ * gc.c (get_envparam_double): enable to accept 0.
+
Thu Mar 31 17:48:25 2016 Koichi Sasada <ko1@atdot.net>
* gc.c (gc_marks_finish): fix syntax error.