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Experimental (C++17 / benchmark / tooling)

License: MIT License

CMake 4.52% C++ 92.65% Python 2.83%

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experimental's Issues

has member (19.6.2 Detecting Arbitrary Member Types template 2nd edition)

add [un]likely bench

http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0479r0.html#appendix_A

add remove space bench

http://lemire.me/blog/2017/01/20/how-quickly-can-you-remove-spaces-from-a-string/

SPSC

https://github.com/facebook/folly/blob/master/folly/ProducerConsumerQueue.h

#define HOT attribute((hot))

http://stackoverflow.com/questions/15028990/semantics-of-gcc-hot-attribute

literal hashing

http://burtleburtle.net/bob/hash/integer.html

smart ptr allocator pattern

https://stackoverflow.com/questions/41748542/shared-ptr-custom-allocator-together-with-custom-deleter

endianness

http://en.cppreference.com/w/cpp/language/fold

stoi itos

__builtin_clzl https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html

activate lto

Bnechmark times syscall

http://stackoverflow.com/questions/6498972/faster-equivalent-of-gettimeofday

regex alloc pattern

shared_ptr + vector

shared memory allocator

plf colony

http://www.plflib.org/colony.htm

benchmark boost utilities

e.g. flat_map vs map vs google::sparse_hash vs unordered_map
(focus on data locality)

intrusive container vs non-intrusive container

benchmark logging

http://developerblog.redhat.com/2014/06/24/ultra-lightweight-high-precision-logger-for-openjdk/

bench mmap

http://useless-factor.blogspot.hk/2011/05/why-not-mmap.html
http://stackoverflow.com/questions/45972/mmap-vs-reading-blocks

perfect hash

http://videolectures.net/mit6046jf05_leiserson_lec08/

http://codereview.stackexchange.com/questions/35220/perfect-hashing-implementation

alloc pattern std::function

asan

https://github.com/google/sanitizers/wiki/AddressSanitizer

add syscall

http://stackoverflow.com/questions/13772567/get-cpu-cycle-count

http://lxr.free-electrons.com/source/include/linux/perf_event.h // __NR_perf_event_open
http://man7.org/linux/man-pages/man2/perf_event_open.2.html
https://software.intel.com/en-us/forums/software-tuning-performance-optimization-platform-monitoring/topic/599435

benchmark cache latencies

http://stackoverflow.com/questions/21369381/measuring-cache-latencies

reactor pattern + ring buffer

hash

https://tessil.github.io//other/hash_table_benchmark.html

add concept (gcc 6+)

    namespace
    {
        template <typename T>
        concept bool HasMemberStuff()
        {
            return requires( T t ) { t.stuff; };
        }

        void foo(const HasMemberStuff&) {}

        struct Foo{};
        struct FooWithStuff{int stuff;};
    } 

    foo(FooWithStuff());
    foo(Foo()); // constraints not satisfied void `foo(const HasMemberStuff&);`

doc - tuning stuff

More server side (https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Performance_Tuning_Guide/#main-specs):
e.g. (RH 6+) cpu_dma_latency = 1 : prevent from entering power-saving states
processor.max_cstate=1
processor.idle=poll

...
SystemTap, OProfile

benchmark concurrent map

http://preshing.com/20160201/new-concurrent-hash-maps-for-cpp/

custom allocator

Specifically add short_alloc

benchmark csv parsing

benchmark netmap

https://github.com/luigirizzo/netmap

producer consumer queue

http://www.1024cores.net/home/lock-free-algorithms/queues/bounded-mpmc-queue
https://github.com/cameron314/concurrentqueue

type erasure (22.4 Type Erasure)

"Chainable" allocator

will ease drastically the testing of allocators

consistent cache size

http://blog.melkerlitsgard.se/2016/05/12/cache-sizes-with-cpuid/

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