From 867693fe3d803486e8571d024169ed5c2a251662 Mon Sep 17 00:00:00 2001 From: ko1 Date: Thu, 31 Mar 2016 09:16:48 +0000 Subject: * 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 --- ChangeLog | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'ChangeLog') 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 + + * 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 * gc.c (gc_marks_finish): fix syntax error. -- cgit v1.2.3