[STDCXX-928] [HP aCC 6.10] native library faster than stdcxx 4.2.1

• Type: Improvement
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 4.2.1
• Fix Version/s: 4.3.0
• Component/s: 23. Containers, 25. Algorithms
• Severity: Inefficiency
• Assignee: Unassigned
• Reporter: Martin Sebor
• Created: 08/May/08 23:22
• Updated: 15/May/08 20:11

Description

When compiled with HP aCC 6.10 on HP-UX 11.23/IPF and stdcxx 4.2.1 the Stepanov and Stroustup's Standard Container Benchmark runs with the following output.

size	array	vector<T*>	vector<iterator>	deque	list	set	multiset
10	1.11	1.35	1.34	3.79	3.76	2.41	3.24
100	0.47	0.50	0.50	1.38	1.92	1.07	1.62
1000	0.45	0.48	0.47	1.25	1.56	0.82	1.17
10000	0.45	0.47	0.47	1.23	1.63	0.78	1.09
100000	0.50	0.51	0.51	1.41	3.65	1.29	2.36
1000000	0.56	0.58	0.58	1.51	7.08	3.60	4.62

Total runtimes:

real    1m6.370s
user    1m5.920s
sys     0m0.130s

When compiled with the same compiler but the native C++ Standard Library the same benchmarks runs with the output below. Note that in most cases the times in this table are better than in the one above.

size	array	vector<T*>	vector<iterator>	deque	list	set	multiset
10	1.06	1.11	1.12	4.00	3.49	2.35	3.05
100	0.46	0.47	0.47	1.38	1.80	0.98	1.51
1000	0.44	0.45	0.44	1.09	1.46	0.75	1.11
10000	0.42	0.43	0.43	0.97	1.54	0.73	1.02
100000	0.47	0.45	0.46	0.99	3.57	1.25	2.32
1000000	0.51	0.52	0.50	1.02	6.83	3.54	4.70

Total runtimes:

real    1m3.320s
user    1m2.800s
sys     0m0.140s