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| <title>Tree Text Insert Timing Test</title> |
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| <h1>Tree-Based and Trie-Based Text Insert Timing Test</h1> |
| <h2><a name="description" id="description">Description</a></h2> |
| <p>This test inserts a number of values with keys from an |
| arbitrary text ([ <a href="references.html#wickland96thirty">wickland96thirty</a> ]) into |
| a container using <tt>insert</tt> . It measures the average |
| time for <tt>insert</tt> as a function of the number of values |
| inserted.</p> |
| <p>(The test was executed with <a href="../../../../testsuite/performance/ext/pb_ds/tree_text_insert_timing.cc"><tt>tree_text_insert_timing_test</tt></a> |
| thirty_years_among_the_dead_preproc.txt 200 200 2100)</p> |
| <h2><a name="purpose" id="purpose">Purpose</a></h2> |
| <p>The test checks the effect of different underlying |
| data structures.</p> |
| <h2><a name="results" id="results">Results</a></h2> |
| <p>Figures <a href="#NNTG">NNTG</a>, <a href="#NVTG">NVTG</a>, |
| and <a href="#NPTG">NPTG</a> show the results for the native |
| tree and <tt>pb_ds</tt>'s node-based trees, the native tree and |
| <tt>pb_ds</tt>'s vector-based trees, and the native tree |
| and<tt>pb_ds</tt>'s PATRICIA-trie, respectively, in <a href="assoc_performance_tests.html#gcc"><u>g++</u></a>; Figures |
| <a href="#NNTM">NNTM</a>, <a href="#NVTM">NVTM</a>, and |
| <a href="#NPTM">NPTM</a> show the same in <a href="assoc_performance_tests.html#msvc"><u>msvc++</u></a>; Figures |
| <a href="#NNTL">NNTL</a>, <a href="#NVTL">NVTL</a>, and |
| <a href="#NPTL">NPTL</a> show the same in <a href="assoc_performance_tests.html#local"><u>local</u></a>.</p> |
| <div id="NNTG_res_div"> |
| <div id="NNTG_gcc"> |
| <div id="NNTG_tree_text_insert_timing_test_node_tree"> |
| <div id="NNTG_assoc"> |
| <div id="NNTG_Native_tree_and_node-based_trees_text_insert_timing_test_using__tt_insert_455tt_"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NNTG" id="NNTG"><img src="tree_text_insert_timing_test_node_tree_gcc.png" alt="no image" /></a></h6>NNTG: Native tree and node-based trees text insert timing test using <tt>insert</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> |
| splay_tree_map- |
| <a href="tree.html"><tt>tree</tt></a> |
| with <tt>Tag</tt> = <a href="splay_tree_tag.html"><tt>splay_tree_tag</tt></a> |
| , and <tt>Node_Update</tt> = <a href="null_tree_node_update.html"><tt>null_tree_node_update</tt></a> |
| </li> |
| <li> |
| n_map- |
| <tt>std::map</tt></li> |
| <li> |
| rb_tree_map- |
| <a href="tree.html"><tt>tree</tt></a> |
| with <tt>Tag</tt> = <a href="rb_tree_tag.html"><tt>rb_tree_tag</tt></a> |
| , and <tt>Node_Update</tt> = <a href="null_tree_node_update.html"><tt>null_tree_node_update</tt></a> |
| </li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NVTG_res_div"> |
| <div id="NVTG_gcc"> |
| <div id="NVTG_tree_text_insert_timing_test_vector_tree"> |
| <div id="NVTG_assoc"> |
| <div id="NVTG_Native_tree_and_vector-based_tree_text_insert_timing_test_using__tt_insert_455tt_"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NVTG" id="NVTG"><img src="tree_text_insert_timing_test_vector_tree_gcc.png" alt="no image" /></a></h6>NVTG: Native tree and vector-based tree text insert timing test using <tt>insert</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> |
| ov_tree_map- |
| <a href="tree.html"><tt>tree</tt></a> |
| with <tt>Tag</tt> = <a href="ov_tree_tag.html"><tt>ov_tree_tag</tt></a> |
| , and <tt>Node_Update</tt> = <a href="null_tree_node_update.html"><tt>null_tree_node_update</tt></a> |
| </li> |
| <li> |
| n_map- |
| <tt>std::map</tt></li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NPTG_res_div"> |
| <div id="NPTG_gcc"> |
| <div id="NPTG_tree_text_insert_timing_test_pat_trie"> |
| <div id="NPTG_assoc"> |
| <div id="NPTG_Native_tree_and_PATRICIA_trie_text_insert_timing_test_using__tt_insert_455tt_"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NPTG" id="NPTG"><img src="tree_text_insert_timing_test_pat_trie_gcc.png" alt="no image" /></a></h6>NPTG: Native tree and PATRICIA trie text insert timing test using <tt>insert</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_map- |
| <tt>std::map</tt></li> |
| <li> |
| pat_trie_map- |
| <a href="trie.html"><tt>trie</tt></a> |
| with <tt>Tag</tt> = <a href="pat_trie_tag.html"><tt>pat_trie_tag</tt></a> |
| , and <tt>Node_Update</tt> = <a href="null_trie_node_update.html"><tt>null_trie_node_update</tt></a> |
| </li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NNTM_res_div"> |
| <div id="NNTM_msvc"> |
| <div id="NNTM_tree_text_insert_timing_test_node_tree"> |
| <div id="NNTM_assoc"> |
| <div id="NNTM_Native_tree_and_node-based_trees_text_insert_timing_test_using__tt_insert_455tt_"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NNTM" id="NNTM"><img src="tree_text_insert_timing_test_node_tree_msvc.png" alt="no image" /></a></h6>NNTM: Native tree and node-based trees text insert timing test using <tt>insert</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> |
| splay_tree_map- |
| <a href="tree.html"><tt>tree</tt></a> |
| with <tt>Tag</tt> = <a href="splay_tree_tag.html"><tt>splay_tree_tag</tt></a> |
| , and <tt>Node_Update</tt> = <a href="null_tree_node_update.html"><tt>null_tree_node_update</tt></a> |
| </li> |
| <li> |
| n_map- |
| <tt>std::map</tt></li> |
| <li> |
| rb_tree_map- |
| <a href="tree.html"><tt>tree</tt></a> |
| with <tt>Tag</tt> = <a href="rb_tree_tag.html"><tt>rb_tree_tag</tt></a> |
| , and <tt>Node_Update</tt> = <a href="null_tree_node_update.html"><tt>null_tree_node_update</tt></a> |
| </li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NVTM_res_div"> |
| <div id="NVTM_msvc"> |
| <div id="NVTM_tree_text_insert_timing_test_vector_tree"> |
| <div id="NVTM_assoc"> |
| <div id="NVTM_Native_tree_and_vector-based_tree_text_insert_timing_test_using__tt_insert_455tt_"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NVTM" id="NVTM"><img src="tree_text_insert_timing_test_vector_tree_msvc.png" alt="no image" /></a></h6>NVTM: Native tree and vector-based tree text insert timing test using <tt>insert</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> |
| ov_tree_map- |
| <a href="tree.html"><tt>tree</tt></a> |
| with <tt>Tag</tt> = <a href="ov_tree_tag.html"><tt>ov_tree_tag</tt></a> |
| , and <tt>Node_Update</tt> = <a href="null_tree_node_update.html"><tt>null_tree_node_update</tt></a> |
| </li> |
| <li> |
| n_map- |
| <tt>std::map</tt></li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NPTM_res_div"> |
| <div id="NPTM_msvc"> |
| <div id="NPTM_tree_text_insert_timing_test_pat_trie"> |
| <div id="NPTM_assoc"> |
| <div id="NPTM_Native_tree_and_PATRICIA_trie_text_insert_timing_test_using__tt_insert_455tt_"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NPTM" id="NPTM"><img src="tree_text_insert_timing_test_pat_trie_msvc.png" alt="no image" /></a></h6>NPTM: Native tree and PATRICIA trie text insert timing test using <tt>insert</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> |
| pat_trie_map- |
| <a href="trie.html"><tt>trie</tt></a> |
| with <tt>Tag</tt> = <a href="pat_trie_tag.html"><tt>pat_trie_tag</tt></a> |
| , and <tt>Node_Update</tt> = <a href="null_trie_node_update.html"><tt>null_trie_node_update</tt></a> |
| </li> |
| <li> |
| n_map- |
| <tt>std::map</tt></li> |
| </ol> |
| </div><div style="width: 100%; height: 20px"></div></div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="NNTL_res_div"> |
| <div id="NNTL_local"> |
| <div id="NNTL_tree_text_insert_timing_test_node_tree"> |
| <div id="NNTL_assoc"> |
| <div id="NNTL_Native_tree_and_node-based_trees_text_insert_timing_test_using__tt_insert_455tt_"><div style = "border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NNTL" id= "NNTL"><img src="tree_text_insert_timing_test_node_tree_local.png" alt="no image" /></a></h6>NNTL: Native tree and node-based trees text insert timing test using <tt>insert</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="NVTL_res_div"> |
| <div id="NVTL_local"> |
| <div id="NVTL_tree_text_insert_timing_test_vector_tree"> |
| <div id="NVTL_assoc"> |
| <div id="NVTL_Native_tree_and_vector-based_tree_text_insert_timing_test_using__tt_insert_455tt_"><div style = "border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NVTL" id= "NVTL"><img src="tree_text_insert_timing_test_vector_tree_local.png" alt="no image" /></a></h6>NVTL: Native tree and vector-based tree text insert timing test using <tt>insert</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="NPTL_res_div"> |
| <div id="NPTL_local"> |
| <div id="NPTL_tree_text_insert_timing_test_pat_trie"> |
| <div id="NPTL_assoc"> |
| <div id="NPTL_Native_tree_and_PATRICIA_trie_text_insert_timing_test_using__tt_insert_455tt_"><div style = "border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NPTL" id= "NPTL"><img src="tree_text_insert_timing_test_pat_trie_local.png" alt="no image" /></a></h6>NPTL: Native tree and PATRICIA trie text insert timing test using <tt>insert</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>Observing Figure <a href="#NNTG">NNTG</a> , for this |
| setting, a splay tree, ( <a href="tree.html"><tt>tree</tt></a> |
| with <tt>Tag =</tt> <a href="splay_tree_tag.html"><tt>splay_tree_tag</tt></a> ) does |
| not do well. This was covered in <a href="tree_text_find_find_timing_test.html">Tree-Based and |
| Trie-Based Text <tt>find</tt> Find Timing Test</a> . The two |
| red-black trees perform better.</p> |
| <p>Observing Figure <a href="#NVTG">NVTG</a>, an ordered-vector |
| tree ( <a href="tree.html"><tt>tree</tt></a> |
| with <tt>Tag =</tt> <a href="ov_tree_tag.html"><tt>ov_tree_tag</tt></a>) performs |
| abysmally. Inserting into this type of tree has linear |
| complexity [ <a href="references.html#austern00noset">austern00noset</a>].</p> |
| <p>Observing Figure <a href="#NPTG">NPTG</a> , A PATRICIA trie |
| ( <a href="trie.html"><tt>trie</tt></a> |
| with <tt>Tag =</tt> <a href="pat_trie_tag.html"><tt>pat_trie_tag</tt></a> ) has |
| abysmal performance, as well. This is not that surprising, |
| since a large-fan-out PATRICIA trie works like a hash table with |
| collisions resolved by a sub-trie. Each time a collision is |
| encountered, a new "hash-table" is built A large fan-out |
| PATRICIA trie, however, doe does well in look-ups (see <a href="tree_text_find_find_timing_test.html">Tree-Based and |
| Trie-Based Text <tt>find</tt> Find Timing Test</a> ). It is |
| possibly beneficial to semi-static settings, therefore.</p> |
| <p><a href="assoc_performance_tests.html#tree_like_based_types">Observations::Tree-Like-Based |
| Container Types</a> summarizes some observations on tree-based |
| and trie-based containers.</p> |
| </div> |
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