"Peter Dimov" <[EMAIL PROTECTED]> wrote in message 000901c2c7dc$e76195e0$1d00a8c0@pdimov2">news:000901c2c7dc$e76195e0$1d00a8c0@pdimov2... > From: "Peter Dimov" <[EMAIL PROTECTED]> > > > > One easy way to estimate the impact of an optimized allocator is to > #define > > BOOST_SP_USE_STD_ALLOCATOR, to make shared_ptr use std::allocator. On SGI > > derived STLs, std::allocator is usually faster than plain new. > > I tried to do that myself but benchmark.cpp doesn't compile for me, there's > probably no timespec on Windows.
I have defined BOOST_SP_USE_STD_ALLOCATOR in benchmark.cpp (gcc 2.95): Resources required by list< shifted_ptr<T> >(4000): Arena 0: system bytes = 226820 in use bytes = 226052 Total (incl. mmap): system bytes = 226820 in use bytes = 226052 max mmap regions = 0 max mmap bytes = 0 list shifted_ptr<T> took 0.0002951000 seconds to construct. list shifted_ptr<T> took 7.1966276647 seconds to reconstruct 2000 times. list shifted_ptr<T> took 5.0495961000 seconds to copy 2000 times. list shifted_ptr<T> took 4.0016951000 seconds to sort 4000 times. list shifted_ptr<T> took 0.1382300647 seconds to swap 500 times. list shifted_ptr<T> took 0.0003241000 seconds to destroy. Resources required by list< shared_ptr<T> >(4000): Arena 0: system bytes = 325124 in use bytes = 321988 Total (incl. mmap): system bytes = 325124 in use bytes = 321988 max mmap regions = 0 max mmap bytes = 0 list shared_ptr<T> took 0.0004259000 seconds to construct. list shared_ptr<T> took 14.0157271000 seconds to reconstruct 2000 times. list shared_ptr<T> took 5.0331178000 seconds to copy 2000 times. list shared_ptr<T> took 4.0376376000 seconds to sort 4000 times. list shared_ptr<T> took 0.1449102647 seconds to swap 500 times. list shared_ptr<T> took 0.0004831000 seconds to destroy. Philippe A. Bouchard _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
