I do not understand why new/delete is slower than std::allocator.
Is there a fundamental reason why it is so ?
The benchmark program attached gives the following timing for series
of new/delete versus std::allocator allocations/deallocations.
new/delete std::allocator
g++ 3.3.2 -O3 : 2.45 s 1.56 s
g++ 3.4.3 -O3 : 2.25 s 2.24 s
g++ 4.0.0 -O3 : 2.13 s 1.30 s
--
Summary: new/delete performance versus std::allocator
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: sylvain dot pion at sophia dot inria dot fr
CC: gcc-bugs at gcc dot gnu dot org
GCC host triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20162
