i do benchmark to v8, and find gc cost too much time:
g_ResourceConstraints.set_max_young_space_size(64*1024*1024);
g_ResourceConstraints.set_max_old_space_size(256*1024*1024);
SetResourceConstraints(&g_ResourceConstraints);
V8::AddGCPrologueCallback(MyGCPrologueCallback);
void MyGCPrologueCallback(v8::GCType type, v8::GCCallbackFlags flags)
{
LOG->debug() << "MyGCPrologueCallback GCType:" << type << ",
GCCallbackFlags:" << flags << endl;
}
2010-07-28 11:54:04|17811|DEBUG|v8 HeapStatistics, total size:
97435424, used size:37844088, GC ing: 0
2010-07-28 11:54:09|17811|DEBUG|v8 HeapStatistics, total size:
97435424, used size:54437608, GC ing: 0
2010-07-28 11:54:11|17797|DEBUG|MyGCPrologueCallback GCType:1,
GCCallbackFlags:0
2010-07-28 11:54:14|17811|DEBUG|v8 HeapStatistics, total size:
97435424, used size:41997672, GC ing: 1
2010-07-28 11:54:19|17811|DEBUG|v8 HeapStatistics, total size:
97435424, used size:60070472, GC ing: 1
2010-07-28 11:54:20|17797|DEBUG|MyGCPrologueCallback GCType:1,
GCCallbackFlags:0
2010-07-28 11:54:24|17811|DEBUG|v8 HeapStatistics, total size:
103450112, used size:53090768, GC ing: 1
2010-07-28 11:54:29|17811|DEBUG|v8 HeapStatistics, total size:
103450112, used size:68901728, GC ing: 1
2010-07-28 11:54:29|17797|DEBUG|MyGCPrologueCallback GCType:1,
GCCallbackFlags:0
2010-07-28 11:54:34|17811|DEBUG|v8 HeapStatistics, total size:
107260832, used size:58538288, GC ing: 1
2010-07-28 11:54:39|17797|DEBUG|MyGCPrologueCallback GCType:2,
GCCallbackFlags:0
2010-07-28 11:54:39|17811|DEBUG|v8 HeapStatistics, total size:
107260832, used size:73159064, GC ing: 1
2010-07-28 11:54:44|17811|DEBUG|v8 HeapStatistics, total size:
110124320, used size:46907488, GC ing: 1
2010-07-28 11:54:49|17811|DEBUG|v8 HeapStatistics, total size:
110377280, used size:60930112, GC ing: 1
2010-07-28 11:54:53|17797|DEBUG|MyGCPrologueCallback GCType:1,
GCCallbackFlags:0
2010-07-28 11:54:54|17811|DEBUG|v8 HeapStatistics, total size:
110377280, used size:48738144, GC ing: 1
2010-07-28 11:54:59|17811|DEBUG|v8 HeapStatistics, total size:
110377280, used size:65532400, GC ing: 1
every some time, gc cost too much time, and can't do nothing else,
why?
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