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Merged
joaquintides merged 5 commits into from
Sep 13, 2025
Merged

Made some subfilters' lookup branchless #42

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efffb29
made fast_multiblock32, fast_multiblock64 and block (for array block …
joaquintides Sep 12, 2025
f1996ee
added mixed lookup to comparison tables
joaquintides Sep 12, 2025
e319606
typo
joaquintides Sep 13, 2025
2a6bb74
updated benchmarks
joaquintides Sep 13, 2025
109a27d
updated release notes
joaquintides Sep 13, 2025
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61 changes: 42 additions & 19 deletions benchmark/comparison_table.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -62,6 +62,7 @@ void resume_timing()
#include <cstdlib>
#include <iomanip>
#include <iostream>
#include <limits>
#include <string>
#include <vector>

Expand All @@ -85,14 +86,20 @@ struct test_results
double insertion_time; /* ns per element */
double successful_lookup_time; /* ns per element */
double unsuccessful_lookup_time; /* ns per element */
double mixed_lookup_time; /* ns per element */
};

template<typename Filter>
test_results test(std::size_t c)
{
using value_type=typename Filter::value_type;

std::vector<value_type> data_in,data_out;
static constexpr double lookup_mix=0.1; /* successful pr. */
static constexpr std::uint64_t mixed_lookup_cut=
(std::uint64_t)(
lookup_mix*(double)(std::numeric_limits<std::uint64_t>::max)());

std::vector<value_type> data_in,data_out,data_mixed;
{
boost::detail::splitmix64 rng;
boost::unordered_flat_set<value_type> unique;
Expand All @@ -114,6 +121,9 @@ test_results test(std::size_t c)
}
}
}
for(std::size_t i=0;i<num_elements;++i){
data_mixed.push_back(rng()<mixed_lookup_cut?data_in[i]:data_out[i]);
}
}

double fpr=0.0;
Expand Down Expand Up @@ -143,6 +153,7 @@ test_results test(std::size_t c)

double successful_lookup_time=0.0;
double unsuccessful_lookup_time=0.0;
double mixed_lookup_time=0.0;
{
Filter f(c*num_elements);
for(const auto& x:data_in)f.insert(x);
Expand All @@ -158,9 +169,17 @@ test_results test(std::size_t c)
return res;
});
unsuccessful_lookup_time=t/num_elements*1E9;
t=measure([&]{
std::size_t res=0;
for(const auto& x:data_mixed)res+=f.may_contain(x);
return res;
});
mixed_lookup_time=t/num_elements*1E9;
}

return {fpr,insertion_time,successful_lookup_time,unsuccessful_lookup_time};
return {
fpr,insertion_time,
successful_lookup_time,unsuccessful_lookup_time,mixed_lookup_time};
}

struct print_double
Expand Down Expand Up @@ -196,7 +215,8 @@ template<typename Filters> void row(std::size_t c)
" <td align=\"right\">"<<print_double(res.fpr,4)<<"</td>\n"
" <td align=\"right\">"<<print_double(res.insertion_time)<<"</td>\n"
" <td align=\"right\">"<<print_double(res.successful_lookup_time)<<"</td>\n"
" <td align=\"right\">"<<print_double(res.unsuccessful_lookup_time)<<"</td>\n";
" <td align=\"right\">"<<print_double(res.unsuccessful_lookup_time)<<"</td>\n"
" <td align=\"right\">"<<print_double(res.mixed_lookup_time)<<"</td>\n";
});

std::cout<<
Expand Down Expand Up @@ -251,17 +271,19 @@ int main(int argc,char* argv[])

auto res=test<unordered_flat_set_filter<int>>(0);
std::cout<<
"<table>\n"
" <tr><th colspan=\"3\"><code>boost::unordered_flat_set</code></tr>\n"
"<table class=\"bordered_table\" style=\"font-size: 85%;\">\n"
" <tr><th colspan=\"4\"><code>boost::unordered_flat_set</code></tr>\n"
" <tr>\n"
" <th>insertion</th>\n"
" <th>successful<br/>lookup</th>\n"
" <th>unsuccessful<br/>lookup</th>\n"
" <th>mixed<br/>lookup</th>\n"
" </tr>\n"
" <tr>\n"
" <td align=\"right\">"<<print_double(res.insertion_time)<<"</td>\n"
" <td align=\"right\">"<<print_double(res.successful_lookup_time)<<"</td>\n"
" <td align=\"right\">"<<print_double(res.unsuccessful_lookup_time)<<"</td>\n"
" <td align=\"right\">"<<print_double(res.mixed_lookup_time)<<"</td>\n"
" </tr>\n"
"</table>\n";

Expand All @@ -272,15 +294,16 @@ int main(int argc,char* argv[])
" <th>FPR<br/>[%]</th>\n"
" <th>ins.</th>\n"
" <th>succ.<br/>lkp.</th>\n"
" <th>uns.<br/>lkp.</th>\n";
" <th>uns.<br/>lkp.</th>\n"
" <th>mixed<br/>lkp.</th>\n";

std::cout<<
"<table>\n"
"<table class=\"bordered_table\" style=\"font-size: 85%;\">\n"
" <tr>\n"
" <th></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,K></code></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,block&lt;uint64_t,K>></code></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,block&lt;uint64_t,K>,1></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,K></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,block&lt;uint64_t,K>></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,block&lt;uint64_t,K>,1></code></th>\n"
" </tr>\n"
" <tr>\n"
" <th>c</th>\n"<<
Expand All @@ -297,9 +320,9 @@ int main(int argc,char* argv[])
std::cout<<
" <tr>\n"
" <th></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,multiblock&lt;uint64_t,K>></code></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,multiblock&lt;uint64_t,K>,1></code></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,fast_multiblock32&lt;K>></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,multiblock&lt;uint64_t,K>></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,multiblock&lt;uint64_t,K>,1></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,fast_multiblock32&lt;K>></code></th>\n"
" </tr>\n"
" <tr>\n"
" <th>c</th>\n"<<
Expand All @@ -316,9 +339,9 @@ int main(int argc,char* argv[])
std::cout<<
" <tr>\n"
" <th></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,fast_multiblock32&lt;K>,1></code></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,fast_multiblock64&lt;K>></code></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,fast_multiblock64&lt;K>,1></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,fast_multiblock32&lt;K>,1></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,fast_multiblock64&lt;K>></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,fast_multiblock64&lt;K>,1></code></th>\n"
" </tr>\n"
" <tr>\n"
" <th>c</th>\n"<<
Expand All @@ -335,9 +358,9 @@ int main(int argc,char* argv[])
std::cout<<
" <tr>\n"
" <th></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,block&lt;uint64_t[8],K>></code></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,block&lt;uint64_t[8],K>,1></code></th>\n"
" <th colspan=\"5\"><code>filter&lt;int,1,multiblock&lt;uint64_t[8],K>></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,block&lt;uint64_t[8],K>></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,block&lt;uint64_t[8],K>,1></code></th>\n"
" <th colspan=\"6\"><code>filter&lt;int,1,multiblock&lt;uint64_t[8],K>></code></th>\n"
" </tr>\n"
" <tr>\n"
" <th>c</th>\n"<<
Expand Down
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