diff options
Diffstat (limited to 'man')
| -rw-r--r-- | man/ruby.1 | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/man/ruby.1 b/man/ruby.1 index cb0e83ec45..c5152d1a07 100644 --- a/man/ruby.1 +++ b/man/ruby.1 @@ -561,7 +561,7 @@ Reaching the old malloc limit. .El .Pp There are currently 4 possible areas where the GC may be tuned by -the following 11 environment variables: +the following environment variables: .Bl -hang -compact -width "RUBY_GC_HEAP_INIT_SLOTS" .It Ev RUBY_GC_HEAP_INIT_SLOTS Initial allocation slots. Applies to all slot sizes. Introduced in Ruby 2.1, default: 10000. @@ -591,6 +591,12 @@ where R is this factor and N is the number of old objects after the last full GC. Introduced in Ruby 2.1.1, default: 2.0 .Pp +.It Ev RUBY_GC_HEAP_REMEMBERED_WB_UNPROTECTED_OBJECTS_LIMIT_RATIO +Used to calculate the +.Li remembered_wb_unprotected_objects_limit +using a ratio of +.Li old_objects . +Introduced in Ruby 3.3, default: 0.1, minimum: 0.0 .It Ev RUBY_GC_MALLOC_LIMIT The initial limit of young generation allocation from the malloc-family. GC will start when this limit is reached. @@ -607,6 +613,31 @@ GC frequency but increasing malloc growth until RUBY_GC_MALLOC_LIMIT_MAX is reached. Introduced in Ruby 2.1, default: 1.4, minimum: 1.0 (no growth) .Pp +.It Ev RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO +Allocate additional pages when the number of free slots is +lower than the value +.Li (total_slots * (this ratio)) . +Introduced in Ruby 2.4, default: 0.2, minimum: 0.0, maximum: 1.0 +.Pp +.It Ev RUBY_GC_HEAP_FREE_SLOTS_MAX_RATIO +Allow to free pages when the number of free slots is greater than the value +.Li (total_slots * (this ratio)) . +Introduced in Ruby 2.4, default: 0.4, minimum: +.Li RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO, +maximum: 1.0 +.Pp +.It Ev RUBY_GC_HEAP_FREE_SLOTS_GOAL_RATIO +Allocate slots to satisfy this formula: +.Li free_slots = total_slots * goal_ratio +In other words, prepare +.Li (total_slots * goal_ratio) +free slots. +if this value is 0.0, then use RUBY_GC_HEAP_GROWTH_FACTOR directly. +Introduced in Ruby 2.4, default: 0.65, minimum: +.Li RUBY_GC_HEAP_FREE_SLOTS_MIN_RATIO, +maximum: +.Li RUBY_GC_HEAP_FREE_SLOTS_MAX_RATIO +.Pp .It Ev RUBY_GC_OLDMALLOC_LIMIT The initial limit of old generation allocation from malloc, a full GC will start when this limit is reached. |