GitHub user vmamidi opened an issue:
https://github.com/apache/trafficserver/issues/1336
cache promote plugin takes too much calculating size of LRUList
pstack shows that cache promote plugin spends lot of time calculating too
much time in determining the size of LRUList
#0 std::__distance<std::_List_const_iterator<std::pair<LRUHash, unsigned
int> > > (__last=..., __first=...) at
/opt/gcc/include/c++/4.9.3/bits/stl_iterator_base_funcs.h:83
#1 std::distance<std::_List_const_iterator<std::pair<LRUHash, unsigned
int> > > (__last=..., __first=...) at
/opt/gcc/include/c++/4.9.3/bits/stl_iterator_base_funcs.h:118
#2 std::list<std::pair<LRUHash, unsigned int>,
std::allocator<std::pair<LRUHash, unsigned int> > >::size (this=0x2b37fe095c58)
at /opt/gcc/include/c++/4.9.3/bits/stl_list.h:887
using a length variable should make it not dependent on stl list
implementation
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