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Adding real world compilation benchmark#2379

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lemire merged 8 commits intojson_builder_initfrom
adding_real_world_compilation_benchmark
Jun 21, 2025
Merged

Adding real world compilation benchmark#2379
lemire merged 8 commits intojson_builder_initfrom
adding_real_world_compilation_benchmark

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@FranciscoThiesen
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This benchmark script is an initial attempt at quantifying what is the impact of using reflection in the compilation times for simdjson.

Note:

  • C++ reflection is yet to be approved to C++26, so to run this you need to use an experimental branch of clang. Performance might be significantly different in the future when reflection make it's way to more stable versions of the compiler.

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@lemire
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lemire commented Jun 19, 2025

The CI errors are unrelated.

FranciscoThiesen and others added 4 commits June 19, 2025 11:01
Co-authored-by: Daniel Lemire <daniel@lemire.me>
Co-authored-by: Daniel Lemire <daniel@lemire.me>
Co-authored-by: Daniel Lemire <daniel@lemire.me>
…r being used supports reflection before actually running the benchmark
@FranciscoThiesen FranciscoThiesen requested a review from Copilot June 20, 2025 23:44
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@lemire
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lemire commented Jun 21, 2025

Merging

@lemire lemire merged commit 2aae63a into json_builder_init Jun 21, 2025
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@lemire lemire deleted the adding_real_world_compilation_benchmark branch June 21, 2025 23:25
lemire added a commit that referenced this pull request Jul 14, 2025
* Initial work on JSON builder

* moving the files back to ondemand for now.

* tweak

* more later

* update

* minor edits

* dropping vs arm (missing support)

* adding tests. we still specialized write_string_escaped

* tweaking

* fix typo

* tweaking the approach

* minor fix

* missing store

* another missing store

* Attempt at fixing failing serialization tests. (#2292)

* Fixing appeand_float typo (#2294)

* applying a couple of fixes

* updating single header

* fix for pre C++17 if constexpr

* Fixing unused argument problem and updating the singleheader file

* various pedantic fixes

* Sketch of builder

* reordering.

* simplify

* Adding draft of static reflection based deserialization

* Updating simdjson singleheader

* patching the automated deserialization.

* automated

* Adding support for smart pointers of user defined types.

* Adding specialization for smart pointers for basic types. I think it is highly likely that this can be done in a more generic way.

* Referncing a later version of rapidjson that fixed the issue related with assignment attempt of a const variable for GenericStringRef class.

* guarding the tests

* adding documentation for string_builder

* saving

* rename to 'append'

* saving

* non-functional benchmarks (#2342)

* non-functional benchmarks

* Fix typo

* various fixes

* tweaking

---------

Co-authored-by: Daniel Lemire <dlemire@lemire.me>
Co-authored-by: Francisco Geiman Thiesen <franciscogthiesen@gmail.com>

* tuning

* various minor fixes

* minor tweak

* minor simplification

* updating amal

* adding a cast

* update

* fancy casting

* removing dead code

* Pushing latest changes. CITM benchmark is still not working.

* Still not working, but now I am getting only 10 errors.

* add static reflection benchmark to 'large random' benchmark and allows (#2349)

deserialization (with static reflection) from objects and arrays.

Co-authored-by: Daniel Lemire <dlemire@lemire.me>

* Removing std::map from CitmCatalog definition, since that is not currently supported.

* Added free to rust bench, segfault is still happening..

* The syntax changed: ^E became ^^E. (#2350)

* The syntax changed: ^E became ^^E.

* guarding

---------

Co-authored-by: Daniel Lemire <dlemire@lemire.me>

* Adding support for string_view_keyed_map types.

* Adding concepts as a conditional include.

* updating single-header

* Adding concepts to ondemand deps

* rust benchmark is finally working

* Fixing small typo in docs.

* adding docker config and instructions so that our users can test the static reflection (#2358)

* adding docker config and instructions so that our users can test the
static reflection

* completing the instructions

* pruning white spaces

---------

Co-authored-by: Daniel Lemire <dlemire@lemire.me>

* minor optimizations on the JSON builder branch

* avoiding undef behaviour

* saving

* somewhat nicer builder

* make it possible to run just one benchmark

* adding linux perf

* fixing minor issue

* updating swar

* Adding real world compilation benchmark (#2379)

* Adding compilation benchmark for json parsing with and without reflection

* Moving it to the benchmark folder, also reducing a bit the number of iterations.

* Removing script from root folder.

* Reducing number of iterations

* Update benchmark/benchmark_reflection_usage_compilation.sh

Co-authored-by: Daniel Lemire <daniel@lemire.me>

* Update benchmark/benchmark_reflection_usage_compilation.sh

Co-authored-by: Daniel Lemire <daniel@lemire.me>

* Update benchmark/benchmark_reflection_usage_compilation.sh

Co-authored-by: Daniel Lemire <daniel@lemire.me>

* Making the script more customizable and also test whether the compiler being used supports reflection before actually running the benchmark

---------

Co-authored-by: Daniel Lemire <daniel@lemire.me>

* Using define_static_string from  https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/p3491r2.html (#2389)

* Applying changes needed after latest reflection paper updates.

* Working, but no template for yet.

* Updating single-header to incldue the use of define_static_string.

* copying over master

---------

Co-authored-by: Daniel Lemire <dlemire@lemire.me>
Co-authored-by: Francisco Geiman Thiesen <franciscogthiesen@gmail.com>
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3 participants