Issue 129: Memory consumption hyperoscillations
http://code.google.com/p/v8/issues/detail?id=129
Comment #18 by victor.grishchenko:
Please find attached my class profiling patch.
The intended effect is to extend v8 with --collect-class-statistics option
so heap statistics includes the numbers of
currently living instances for respective classes, e.g.
Old pointer space : capacity: 2031616, waste: 20, available: 942680, %46
rset-marked pointers 41, to-new-space 41 (%100)
rset_marked arrays 0, elements 0, pointers to new space 0 (%0)
total rset-marked bits 41
total rset pointers 41, true cross generation ones 41 (%100)
Object Histogram:
FIXED_ARRAY_TYPE 421 ( 24492 bytes)
PROXY_TYPE 5 ( 40 bytes)
BYTE_ARRAY_TYPE 141 ( 75156 bytes)
FILLER_TYPE 3 ( 20 bytes)
SHARED_FUNCTION_INFO_TYPE 301 ( 16856 bytes)
CALL_HANDLER_INFO_TYPE 4 ( 48 bytes)
FUNCTION_TEMPLATE_INFO_TYPE 6 ( 384 bytes)
OBJECT_TEMPLATE_INFO_TYPE 2 ( 56 bytes)
SCRIPT_TYPE 12 ( 336 bytes)
JS_VALUE_TYPE 3 ( 48 bytes)
JS_OBJECT_TYPE 32225 ( 1030408 bytes)
JS_GLOBAL_OBJECT_TYPE 1 ( 24 bytes)
JS_BUILTINS_OBJECT_TYPE 1 ( 140 bytes)
JS_GLOBAL_PROXY_TYPE 1 ( 16 bytes)
JS_ARRAY_TYPE 5 ( 80 bytes)
JS_REGEXP_TYPE 1 ( 16 bytes)
JS_FUNCTION_TYPE 568 ( 15904 bytes)
Class Histogram:
Function 568 ( 15904 bytes)
Object 35 ( 420 bytes)
4 ( 192 bytes)
Arguments 1 ( 20 bytes)
MathConstructor 1 ( 28 bytes)
Array 5 ( 80 bytes)
RangeError 1 ( 24 bytes)
Peer 32180 ( 1029760 bytes)
Error 6 ( 144 bytes)
RegExp 1 ( 16 bytes)
Boolean 1 ( 16 bytes)
Number 1 ( 16 bytes)
String 1 ( 16 bytes)
Attachments:
class-profiling.diff 3.9 KB
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