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| <title>Hash Random Int Subscript Find Timing Test</title> |
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| <h1>Hash-Based Random-Integer <tt><b>operator</b>[]</tt> |
| FindTiming Test</h1> |
| <h2><a name="description" id="description">Description</a></h2> |
| <p>This test inserts a number of values with uniform i.i.d. |
| integer keys into a container, then performs a series of finds |
| using <tt><b>operator</b>[]</tt>. It measures the average time |
| for <tt><b>operator</b>[]</tt> as a function of the number of |
| values inserted.</p> |
| <p>(The test was executed with <a href="../../../../testsuite/performance/ext/pb_ds/random_int_subscript_find_timing.cc"><tt>hash_random_int_subscript_find_timing_test</tt></a> |
| 200 200 2100)</p> |
| <h2><a name="purpose" id="purpose">Purpose</a></h2> |
| <p>The test checks the effect of different underlying |
| hash-tables (see <a href="hash_based_containers.html">Design::Hash-Based Containers</a> |
| ), range-hashing functions, and trigger policies (see <a href="hash_based_containers.html#hash_policies">Design::Hash-Based |
| Containers::Hash Policies</a> and <a href="hash_based_containers.html#resize_policies">Design::Hash-Based |
| Containers::Resize Policies</a> ).</p> |
| <h2><a name="results" id="results">Results</a></h2> |
| <p>Figures <a href="#NCCG">NCCG</a>, <a href="#NCCM">NCCM</a>, |
| and <a href="#NCCL">NCCL</a> show the results for the native |
| and collision-chaining types in <a href="assoc_performance_tests.html#gcc"><u>g++</u></a>, <a href="assoc_performance_tests.html#msvc"><u>MSVC++</u></a>, and |
| <a href="assoc_performance_tests.html#local"><u>local</u></a>, |
| respectively; Figures <a href="#NGPG">NGPG</a>, <a href="#NGPM">NGPM</a>, and <a href="#NGPL">NGPL</a> show the results |
| for the native and probing types in <a href="assoc_performance_tests.html#gcc"><u>g++</u></a>, <a href="assoc_performance_tests.html#msvc"><u>MSVC++</u></a>, and |
| <a href="assoc_performance_tests.html#local"><u>local</u></a>, |
| respectively.</p> |
| <div id="NCCG_res_div"> |
| <div id="NCCG_gcc"> |
| <div id="NCCG_cc_hash_random_int_subscript_timing_test_find"> |
| <div id="NCCG_assoc"> |
| <div id="NCCG_Native_and_collision-chaining_hash_random_int_find_timing_test_using__tt__b_operator_455b__455tt__457"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NCCG" id="NCCG"><img src="cc_hash_random_int_subscript_timing_test_find_gcc.png" alt="no image" /></a></h6>NCCG: Native and collision-chaining hash random int find timing test using <tt><b>operator</b></tt>[] - <a href="assoc_performance_tests.html#gcc">g++</a><p>In the above figure, the names in the legends have the following meaning:</p> |
| <ol> |
| <li> |
| n_hash_map_ncah- |
| <tt>std::tr1::unordered_map</tt> with <tt>cache_hash_code</tt> = <tt><b>false</b></tt></li> |
| <li> |
| cc_hash_mod_prime_nea_lc_1div8_1div1_nsth_map- |
| <a href="cc_hash_table.html"><tt>cc_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mod_range_hashing.html"><tt>direct_mod_range_hashing</tt></a> |
| , and <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_prime_size_policy.html"><tt>hash_prime_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/1</i></li> |
| <li> |
| cc_hash_mod_prime_nea_lc_1div8_1div2_nsth_map- |
| <a href="cc_hash_table.html"><tt>cc_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mod_range_hashing.html"><tt>direct_mod_range_hashing</tt></a> |
| , and <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_prime_size_policy.html"><tt>hash_prime_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/2</i></li> |
| <li> |
| cc_hash_mask_exp_nea_lc_1div8_1div1_nsth_map- |
| <a href="cc_hash_table.html"><tt>cc_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mask_range_hashing.html"><tt>direct_mask_range_hashing</tt></a> |
| , and <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_exponential_size_policy.html"><tt>hash_exponential_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/1</i></li> |
| <li> |
| cc_hash_mask_exp_nea_lc_1div8_1div2_nsth_map- |
| <a href="cc_hash_table.html"><tt>cc_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mask_range_hashing.html"><tt>direct_mask_range_hashing</tt></a> |
| , and <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_exponential_size_policy.html"><tt>hash_exponential_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/2</i></li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NCCM_res_div"> |
| <div id="NCCM_msvc"> |
| <div id="NCCM_cc_hash_random_int_subscript_timing_test_find"> |
| <div id="NCCM_assoc"> |
| <div id="NCCM_Native_and_collision-chaining_hash_random_int_find_timing_test_using__tt__b_operator_455b__455tt__457"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NCCM" id="NCCM"><img src="cc_hash_random_int_subscript_timing_test_find_msvc.png" alt="no image" /></a></h6>NCCM: Native and collision-chaining hash random int find timing test using <tt><b>operator</b></tt>[] - <a href="assoc_performance_tests.html#msvc">msvc++</a><p>In the above figure, the names in the legends have the following meaning:</p> |
| <ol> |
| <li> |
| cc_hash_mod_prime_nea_lc_1div8_1div1_nsth_map- |
| <a href="cc_hash_table.html"><tt>cc_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mod_range_hashing.html"><tt>direct_mod_range_hashing</tt></a> |
| , and <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_prime_size_policy.html"><tt>hash_prime_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/1</i></li> |
| <li> |
| cc_hash_mod_prime_nea_lc_1div8_1div2_nsth_map- |
| <a href="cc_hash_table.html"><tt>cc_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mod_range_hashing.html"><tt>direct_mod_range_hashing</tt></a> |
| , and <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_prime_size_policy.html"><tt>hash_prime_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/2</i></li> |
| <li> |
| n_hash_map_ncah- |
| <tt>stdext::hash_map</tt></li> |
| <li> |
| cc_hash_mask_exp_nea_lc_1div8_1div1_nsth_map- |
| <a href="cc_hash_table.html"><tt>cc_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mask_range_hashing.html"><tt>direct_mask_range_hashing</tt></a> |
| , and <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_exponential_size_policy.html"><tt>hash_exponential_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/1</i></li> |
| <li> |
| cc_hash_mask_exp_nea_lc_1div8_1div2_nsth_map- |
| <a href="cc_hash_table.html"><tt>cc_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mask_range_hashing.html"><tt>direct_mask_range_hashing</tt></a> |
| , and <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_exponential_size_policy.html"><tt>hash_exponential_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/2</i></li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NCCL_res_div"> |
| <div id="NCCL_local"> |
| <div id="NCCL_cc_hash_random_int_subscript_timing_test_find"> |
| <div id="NCCL_assoc"> |
| <div id="NCCL_Native_and_collision-chaining_hash_random_int_find_timing_test_using__tt__b_operator_455b__455tt__457"><div style = "border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NCCL" id= "NCCL"><img src="cc_hash_random_int_subscript_timing_test_find_local.png" alt="no image" /></a></h6>NCCL: Native and collision-chaining hash random int find timing test using <tt><b>operator</b></tt>[] - <a href = "assoc_performance_tests.html#local">local</a></div><div style = "width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NGPG_res_div"> |
| <div id="NGPG_gcc"> |
| <div id="NGPG_gp_hash_random_int_subscript_timing_test_find"> |
| <div id="NGPG_assoc"> |
| <div id="NGPG_Native_and_probing_hash_random_int_find_timing_test_using__tt__b_operator_455b__455tt__457"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NGPG" id="NGPG"><img src="gp_hash_random_int_subscript_timing_test_find_gcc.png" alt="no image" /></a></h6>NGPG: Native and probing hash random int find timing test using <tt><b>operator</b></tt>[] - <a href="assoc_performance_tests.html#gcc">g++</a><p>In the above figure, the names in the legends have the following meaning:</p> |
| <ol> |
| <li> |
| n_hash_map_ncah- |
| <tt>std::tr1::unordered_map</tt> with <tt>cache_hash_code</tt> = <tt><b>false</b></tt></li> |
| <li> |
| gp_hash_mod_quadp_prime_nea_lc_1div8_1div2_nsth_map- |
| <a href="gp_hash_table.html"><tt>gp_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mod_range_hashing.html"><tt>direct_mod_range_hashing</tt></a> |
| , <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_prime_size_policy.html"><tt>hash_prime_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/2</i>, and <tt>Probe_Fn</tt> = <a href="quadratic_probe_fn.html"><tt>quadratic_probe_fn</tt></a> |
| </li> |
| <li> |
| gp_hash_mask_linp_exp_nea_lc_1div8_1div2_nsth_map- |
| <a href="gp_hash_table.html"><tt>gp_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mask_range_hashing.html"><tt>direct_mask_range_hashing</tt></a> |
| , <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_exponential_size_policy.html"><tt>hash_exponential_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/2</i>, and <tt>Probe_Fn</tt> = <a href="linear_probe_fn.html"><tt>linear_probe_fn</tt></a> |
| </li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NGPM_res_div"> |
| <div id="NGPM_msvc"> |
| <div id="NGPM_gp_hash_random_int_subscript_timing_test_find"> |
| <div id="NGPM_assoc"> |
| <div id="NGPM_Native_and_probing_hash_random_int_find_timing_test_using__tt__b_operator_455b__455tt__457"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NGPM" id="NGPM"><img src="gp_hash_random_int_subscript_timing_test_find_msvc.png" alt="no image" /></a></h6>NGPM: Native and probing hash random int find timing test using <tt><b>operator</b></tt>[] - <a href="assoc_performance_tests.html#msvc">msvc++</a><p>In the above figure, the names in the legends have the following meaning:</p> |
| <ol> |
| <li> |
| gp_hash_mod_quadp_prime_nea_lc_1div8_1div2_nsth_map- |
| <a href="gp_hash_table.html"><tt>gp_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mod_range_hashing.html"><tt>direct_mod_range_hashing</tt></a> |
| , <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_prime_size_policy.html"><tt>hash_prime_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/2</i>, and <tt>Probe_Fn</tt> = <a href="quadratic_probe_fn.html"><tt>quadratic_probe_fn</tt></a> |
| </li> |
| <li> |
| n_hash_map_ncah- |
| <tt>stdext::hash_map</tt></li> |
| <li> |
| gp_hash_mask_linp_exp_nea_lc_1div8_1div2_nsth_map- |
| <a href="gp_hash_table.html"><tt>gp_hash_table</tt></a> |
| with <tt>Comb_Hash_Fn</tt> = <a href="direct_mask_range_hashing.html"><tt>direct_mask_range_hashing</tt></a> |
| , <tt>Resize_Policy</tt> = <a href="hash_standard_resize_policy.html"><tt>hash_standard_resize_policy</tt></a> |
| with <tt>Size_Policy</tt> = <a href="hash_exponential_size_policy.html"><tt>hash_exponential_size_policy</tt></a> |
| , and <tt>Trigger_Policy</tt> = <a href="hash_load_check_resize_trigger.html"><tt>hash_load_check_resize_trigger</tt></a> |
| with <i>α<sub>min</sub></i> = <i>1/8</i> and <i>α<sub>max</sub></i> = <i>1/2</i>, and <tt>Probe_Fn</tt> = <a href="linear_probe_fn.html"><tt>linear_probe_fn</tt></a> |
| </li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NGPL_res_div"> |
| <div id="NGPL_local"> |
| <div id="NGPL_gp_hash_random_int_subscript_timing_test_find"> |
| <div id="NGPL_assoc"> |
| <div id="NGPL_Native_and_probing_hash_random_int_find_timing_test_using__tt__b_operator_455b__455tt__457"><div style = "border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NGPL" id= "NGPL"><img src="gp_hash_random_int_subscript_timing_test_find_local.png" alt="no image" /></a></h6>NGPL: Native and probing hash random int find timing test using <tt><b>operator</b></tt>[] - <a href = "assoc_performance_tests.html#local">local</a></div><div style = "width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <h2><a name="observations" id="observations">Observations</a></h2> |
| <p>This test shows similar results to <a href="hash_random_int_find_find_timing_test.html">Hash-Based |
| Random-Integer <tt>find</tt> Find Timing Test</a> .</p> |
| </div> |
| </body> |
| </html> |
