coffee/fast_float
1
0
Fork 0
mirror of https://github.com/fastfloat/fast_float.git synced 2025-12-24 12:34:53 +08:00
Code Issues Packages Projects Releases Wiki Activity

add a memcpy baseline

Browse Source
This commit is contained in:
Daniel Lemire 2025-12-22 22:01:50 -05:00
parent 62ed60e95f
commit 55723db171
1 changed files with 11 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
benchmarks/bench_ip.cpp
View File

@ -13,12 +13,12 @@ void pretty_print(size_t volume, size_t bytes, std::string name,
counters::event_aggregate agg) { counters::event_aggregate agg) {
printf("%-40s : ", name.c_str()); printf("%-40s : ", name.c_str());
printf(" %5.2f GB/s ", bytes / agg.fastest_elapsed_ns()); printf(" %5.2f GB/s ", bytes / agg.fastest_elapsed_ns());
printf(" %5.1f Ma/s ", volume * 1000.0 / agg.fastest_elapsed_ns()); printf(" %5.1f Mip/s ", volume * 1000.0 / agg.fastest_elapsed_ns());
printf(" %5.2f ns/d ", agg.fastest_elapsed_ns() / volume); printf(" %5.2f ns/ip ", agg.fastest_elapsed_ns() / volume);
if (counters::event_collector().has_events()) { if (counters::event_collector().has_events()) {
printf(" %5.2f GHz ", agg.fastest_cycles() / agg.fastest_elapsed_ns()); printf(" %5.2f GHz ", agg.fastest_cycles() / agg.fastest_elapsed_ns());
printf(" %5.2f c/d ", agg.fastest_cycles() / volume); printf(" %5.2f c/ip ", agg.fastest_cycles() / volume);
printf(" %5.2f i/d ", agg.fastest_instructions() / volume); printf(" %5.2f i/ip ", agg.fastest_instructions() / volume);
printf(" %5.2f c/b ", agg.fastest_cycles() / bytes); printf(" %5.2f c/b ", agg.fastest_cycles() / bytes);
printf(" %5.2f i/b ", agg.fastest_instructions() / bytes); printf(" %5.2f i/b ", agg.fastest_instructions() / bytes);
printf(" %5.2f i/c ", agg.fastest_instructions() / agg.fastest_cycles()); printf(" %5.2f i/c ", agg.fastest_instructions() / agg.fastest_cycles());
@ -144,6 +144,13 @@ int main() {
const size_t volume = N; const size_t volume = N;
volatile uint32_t sink = 0; volatile uint32_t sink = 0;
std::string buffer(ip_size * N, ' ');
pretty_print(volume, bytes, "memcpy baseline",
counters::bench([&]() {
std::memcpy((char *)buffer.data(), buf.data(), bytes);
}));
pretty_print(volume, bytes, "just_seek_ip_end (no parse)", pretty_print(volume, bytes, "just_seek_ip_end (no parse)",
counters::bench([&]() { counters::bench([&]() {