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-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
- "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
-<head>
-<meta name="generator" content="HTML Tidy for Linux/x86 (vers 12 April 2005), see www.w3.org" />
-<title>Priority Queue Text Push Pop Timing Test</title>
-<meta http-equiv="Content-Type" content="text/html; charset=us-ascii" />
-</head>
-<body>
-<div id="page">
-<h1>Priority Queue Text <tt>push</tt> and <tt>pop</tt> 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>push</tt> , then removes them using
- <tt>pop</tt> . It measures the average time for <tt>push</tt>
- as a function of the number of values.</p>
-<p>(The test was executed with <a href="http://gcc.gnu.org/viewcvs/*checkout*/trunk/libstdc%2B%2B-v3/testsuite/performance/ext/pb_ds/priority_queue_text_push_pop_timing.cc"><tt>
- priority_queue_text_push_pop_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 (see <a href="pq_design.html#pq_imp">Design::Priority
- Queues::Implementations</a>).</p>
-<h2><a name="results" id="results">Results</a></h2>
-<p>Figures <a href="#NPG">NPG</a>, <a href="#NPM">NPM</a>, and
- <a href="#NPL">NPL</a> show the results for the native priority
- queues and <tt>pb_ds</tt> 's priority queues in <a href="pq_performance_tests.html#gcc"><u>g++</u></a>, <a href="pq_performance_tests.html#msvc"><u>msvc++</u></a>, and
- <a href="pq_performance_tests.html#local"><u>local</u></a>,
- respectively; Figures <a href="#NBRG">NBRG</a>, <a href="#NBRM">NBRM</a>, and <a href="#NBRL">NBRL</a> show the results
- for the native priority queues and <tt>pb_ds</tt>'s pairing
- queues in <a href="pq_performance_tests.html#gcc"><u>g++</u></a>, <a href="pq_performance_tests.html#msvc"><u>msvc++</u></a>, and
- <a href="pq_performance_tests.html#local"><u>local</u></a>,
- respectively.</p>
-<div id="NPG_res_div">
-<div id="NPG_gcc">
-<div id="NPG_priority_queue_text_push_pop_timing_test">
-<div id="NPG_pq">
-<div id="NPG_Native_tree_and__tt_pb_ds_455tt__priority_queue__tt_push_455tt__and__tt_pop_455tt__timing_test"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NPG" id="NPG"><img src="priority_queue_text_push_pop_timing_test_gcc.png" alt="no image" /></a></h6>NPG: Native tree and <tt>pb ds</tt> priority queue <tt>push</tt> and <tt>pop</tt> timing test - <a href="pq_performance_tests.html#gcc">g++</a><p>In the above figure, the names in the legends have the following meaning:</p>
-<ol>
-<li>
-n_pq_vector-
-<tt>std::priority_queue</tt> adapting <tt>std::vector</tt></li>
-<li>
-n_pq_deque-
-<tt>std::priority_queue</tt> adapting <tt>std::deque</tt></li>
-<li>
-thin_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="thin_heap_tag.html"><tt>thin_heap_tag</tt></a>
-</li>
-<li>
-rc_binomial_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="rc_binomial_heap_tag.html"><tt>rc_binomial_heap_tag</tt></a>
-</li>
-<li>
-binomial_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="binomial_heap_tag.html"><tt>binomial_heap_tag</tt></a>
-</li>
-<li>
-binary_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="binary_heap_tag.html"><tt>binary_heap_tag</tt></a>
-</li>
-<li>
-pairing_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="pairing_heap_tag.html"><tt>pairing_heap_tag</tt></a>
-</li>
-</ol>
-</div><div style="width: 100%; height: 20px"></div></div>
-</div>
-</div>
-</div>
-</div>
-<div id="NPM_res_div">
-<div id="NPM_msvc">
-<div id="NPM_priority_queue_text_push_pop_timing_test">
-<div id="NPM_pq">
-<div id="NPM_Native_tree_and__tt_pb_ds_455tt__priority_queue__tt_push_455tt__and__tt_pop_455tt__timing_test"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NPM" id="NPM"><img src="priority_queue_text_push_pop_timing_test_msvc.png" alt="no image" /></a></h6>NPM: Native tree and <tt>pb ds</tt> priority queue <tt>push</tt> and <tt>pop</tt> timing test - <a href="pq_performance_tests.html#msvc">msvc++</a><p>In the above figure, the names in the legends have the following meaning:</p>
-<ol>
-<li>
-n_pq_deque-
-<tt>std::priority_queue</tt> adapting <tt>std::deque</tt></li>
-<li>
-n_pq_vector-
-<tt>std::priority_queue</tt> adapting <tt>std::vector</tt></li>
-<li>
-thin_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="thin_heap_tag.html"><tt>thin_heap_tag</tt></a>
-</li>
-<li>
-rc_binomial_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="rc_binomial_heap_tag.html"><tt>rc_binomial_heap_tag</tt></a>
-</li>
-<li>
-binomial_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="binomial_heap_tag.html"><tt>binomial_heap_tag</tt></a>
-</li>
-<li>
-pairing_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="pairing_heap_tag.html"><tt>pairing_heap_tag</tt></a>
-</li>
-<li>
-binary_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="binary_heap_tag.html"><tt>binary_heap_tag</tt></a>
-</li>
-</ol>
-</div><div style="width: 100%; height: 20px"></div></div>
-</div>
-</div>
-</div>
-</div>
-<div id="NPL_res_div">
-<div id="NPL_local">
-<div id="NPL_priority_queue_text_push_pop_timing_test">
-<div id="NPL_pq">
-<div id="NPL_Native_tree_and__tt_pb_ds_455tt__priority_queue__tt_push_455tt__and__tt_pop_455tt__timing_test"><div style = "border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NPL" id= "NPL"><img src="priority_queue_text_push_pop_timing_test_local.png" alt="no image" /></a></h6>NPL: Native tree and <tt>pb ds</tt> priority queue <tt>push</tt> and <tt>pop</tt> timing test - <a href = "pq_performance_tests.html#local">local</a></div><div style = "width: 100%; height: 20px"></div></div>
-</div>
-</div>
-</div>
-</div>
-<div id="NBRG_res_div">
-<div id="NBRG_gcc">
-<div id="NBRG_pairing_priority_queue_text_push_pop_timing_test">
-<div id="NBRG_pq">
-<div id="NBRG_Native_tree_and__tt_pb_ds_455tt__pairing_priority_queue__tt_push_455tt__and__tt_pop_455tt__timing_test"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NBRG" id="NBRG"><img src="pairing_priority_queue_text_push_pop_timing_test_gcc.png" alt="no image" /></a></h6>NBRG: Native tree and <tt>pb ds</tt> pairing priority queue <tt>push</tt> and <tt>pop</tt> timing test - <a href="pq_performance_tests.html#gcc">g++</a><p>In the above figure, the names in the legends have the following meaning:</p>
-<ol>
-<li>
-n_pq_vector-
-<tt>std::priority_queue</tt> adapting <tt>std::vector</tt></li>
-<li>
-n_pq_deque-
-<tt>std::priority_queue</tt> adapting <tt>std::deque</tt></li>
-<li>
-pairing_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="pairing_heap_tag.html"><tt>pairing_heap_tag</tt></a>
-</li>
-</ol>
-</div><div style="width: 100%; height: 20px"></div></div>
-</div>
-</div>
-</div>
-</div>
-<div id="NBRM_res_div">
-<div id="NBRM_msvc">
-<div id="NBRM_pairing_priority_queue_text_push_pop_timing_test">
-<div id="NBRM_pq">
-<div id="NBRM_Native_tree_and__tt_pb_ds_455tt__pairing_priority_queue__tt_push_455tt__and__tt_pop_455tt__timing_test"><div style="border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NBRM" id="NBRM"><img src="pairing_priority_queue_text_push_pop_timing_test_msvc.png" alt="no image" /></a></h6>NBRM: Native tree and <tt>pb ds</tt> pairing priority queue <tt>push</tt> and <tt>pop</tt> timing test - <a href="pq_performance_tests.html#msvc">msvc++</a><p>In the above figure, the names in the legends have the following meaning:</p>
-<ol>
-<li>
-n_pq_deque-
-<tt>std::priority_queue</tt> adapting <tt>std::deque</tt></li>
-<li>
-n_pq_vector-
-<tt>std::priority_queue</tt> adapting <tt>std::vector</tt></li>
-<li>
-pairing_heap-
-<a href="priority_queue.html"><tt>priority_queue</tt></a>
- with <tt>Tag</tt> = <a href="pairing_heap_tag.html"><tt>pairing_heap_tag</tt></a>
-</li>
-</ol>
-</div><div style="width: 100%; height: 20px"></div></div>
-</div>
-</div>
-</div>
-</div>
-<div id="NBRL_res_div">
-<div id="NBRL_local">
-<div id="NBRL_pairing_priority_queue_text_push_pop_timing_test">
-<div id="NBRL_pq">
-<div id="NBRL_Native_tree_and__tt_pb_ds_455tt__pairing_priority_queue__tt_push_455tt__and__tt_pop_455tt__timing_test"><div style = "border-style: dotted; border-width: 1px; border-color: lightgray"><h6 class="c1"><a name="NBRL" id= "NBRL"><img src="pairing_priority_queue_text_push_pop_timing_test_local.png" alt="no image" /></a></h6>NBRL: Native tree and <tt>pb ds</tt> pairing priority queue <tt>push</tt> and <tt>pop</tt> timing test - <a href = "pq_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>These results are very similar to <a href="priority_queue_text_push_timing_test.html">Priority Queue Text
- <tt>push</tt> Timing Test</a>. As stated there, pairing heaps
- (<a href="priority_queue.html"><tt>priority_queue</tt></a> with
- <tt>Tag</tt> = <a href="pairing_heap_tag.html"><tt>pairing_heap_tag</tt></a>)
- are most suited for <tt>push</tt> and <tt>pop</tt> sequences of
- non-primitive types such as strings. Observing these two tests,
- one can note that a pairing heap outperforms the others in
- terms of <tt>push</tt> operations, but equals binary heaps
- (<a href="priority_queue.html"><tt>priority_queue</tt></a> with
- <tt>Tag</tt> = <a href="binary_heap_tag.html"><tt>binary_heap_tag</tt></a>) if
- the number of <tt>push</tt> and <tt>pop</tt> operations is
- equal. As the number of <tt>pop</tt> operations is at most
- equal to the number of <tt>push</tt> operations, pairing heaps
- are better in this case. See <a href="priority_queue_random_int_push_pop_timing_test.html">Priority
- Queue Random Integer <tt>push</tt> and <tt>pop</tt> Timing
- Test</a> for a case which is different.</p>
-<p><a href="pq_performance_tests.html#pq_observations">Priority-Queue
- Performance Tests::Observations</a> discusses this further and
- summarizes.</p>
-</div>
-</body>
-</html>