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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -1,3 +1,38 @@ +Tue Nov 5 13:37:19 2013 Koichi Sasada <ko1@atdot.net> + + * gc.c: add support to estimate increase of oldspace memory usage. + This is another approach to solve an issue discussed at r43530. + This feature is diabled as default. + + This feature measures an increment of memory consuption by oldgen + objects. It measures memory consumption for each objects when + the object is promoted. However, measurement of memory consumption + is not accurate now. So that this measurement is `estimation'. + + To implement this feature, move memsize_of() function from + ext/objspace/objspace.c and expose rb_obj_memsize_of(). + + Some memsize() functions for T_DATA (T_TYPEDDATA) have problem to + measure memory size, so that we ignores T_DATA objects now. + For example, some functions skip NULL check for pointer. + + The macro RGENGC_ESTIMATE_OLDSPACE enables/disables this feature, + and turned off as default. + + We need to compare 3gen GC and this feature carefully. + (it is possible to enable both feature) + We need a help to compare them. + + * internal.h: expose rb_obj_memsize_of(). + + * ext/objspace/objspace.c: use rb_obj_memsize_of() function. + + * cont.c (fiber_memsize): fix to check NULL. + + * variable.c (autoload_memsize): ditto. + + * vm.c (vm_memsize): ditto. + Tue Nov 5 04:03:07 2013 Koichi Sasada <ko1@atdot.net> * gc.c (GC_MALLOC_LIMIT_MAX): fix default value 512MB -> 384MB. |