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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 27 |
1 files changed, 27 insertions, 0 deletions
@@ -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. |