Issue 129: Memory consumption hyperoscillations
http://code.google.com/p/v8/issues/detail?id=129
Comment #14 by victor.grishchenko:
Suddenly I stumbled upon Heap::ReportHeapStatistics. It turns out that
memory is consumed by FixedArrays residing
in the old pointer space (55Mb vs 3Mb consumed by JSObjects). As far as I
understand, every object I create in
JavaScript is a descendant of JSObject (e.g. JSArray). So I am completely
confused.
I did a bit more of instrumentation and it seems those are arrays
predominantly of size 100 containing "very long
strings" and integers. I am not a v8 developer so I did not go further.
Looking forward to get some hints.
0x1fe5da9: [FixedArray]
- length: 100
[0]: 21
[1]: 32
[2]: 0x1600135 <Very long string[5767248]>
[3]: 20
[4]: 0x1606925 <Very long string[141414336]>
[5]: 0x1426469 <Very long string[5767232]>
[6]: 64
[7]: 0x16056d9 <Very long string[75848289]>
[8]: 0x140019d <Very long string[5283127]>
[9]: 67
[10]: 0x16069e5 <Very long string[136953025]>
[11]: 0x1426581 <Very long string[5767232]>
[12]: 704
[13]: 0x1606a31 <Very long string[133472896]>
[14]: 0x14265f1 <Very long string[5767232]>
[15]: 960
[16]: 0x16069c1 <Very long string[183547326]>
[17]: 0x1426549 <Very long string[5767232]>
[18]: 576
[19]: 0x1606a09 <Very long string[152163044]>
[20]: 0x14265b9 <Very long string[5767232]>
[21]: 832
[22]: 0x1606971 <Very long string[147476838]>
[23]: 0x14264d9 <Very long string[5767232]>
[24]: 320
[25]: 0x1606981 <Very long string[241534887]>
[26]: 0x14264f5 <Very long string[5767232]>
[27]: 384
[28]: 0x16069a9 <Very long string[237873342]>
[29]: 0x142652d <Very long string[5767232]>
[30]: 512
[31]: 0x1606a51 <Very long string[170837795]>
[32]: 0x1426629 <Very long string[5767232]>
[33]: 1088
Attachments:
whatthehell.txt 9.8 KB
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