tests: Add performance test for in-memory row mutation
It shows that our serialization code, which is using ostringstream
under the hood, is really dragging us down. In the perf profile we can
see dynamic casts high called from iostream classes, called from
abstract_type::decompose()
$ taskset -c 0 build/release/tests/perf/perf_mutation
Timing mutation of single column within once row
83536.54 tps
115157.06 tps
85059.52 tps
60443.80 tps
112878.47 tps
$ perf report
- 11,66% perf_mutation libstdc++.so.6.0.20 [.] __cxxabiv1::__si_class_type_info::__do_dyncast(long, __cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1:▒
+ __cxxabiv1::__si_class_type_info::__do_dyncast(long, __cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1::__class_type_info const*, void const*, __cxxabiv1::__c◆
- __dynamic_cast ▒
- 43,58% std::num_get<char, std::istreambuf_iterator<char, std::char_traits<char> > > const& std::use_facet<std::num_get<char, std::istreambuf_iterator<char, std▒
std::basic_ios<char, std::char_traits<char> >::_M_cache_locale(std::locale const&) ▒
- std::basic_ios<char, std::char_traits<char> >::init(std::basic_streambuf<char, std::char_traits<char> >*) ▒
92,70% std::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::basic_istringstream(std::string const&, std::_Ios_Openmode) ▒
+ 7,30% abstract_type::decompose(boost::any const&) ▒
- 27,36% bool std::has_facet<std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > > >(std::locale const&) ▒
std::basic_ios<char, std::char_traits<char> >::_M_cache_locale(std::locale const&) ▒
- std::basic_ios<char, std::char_traits<char> >::init(std::basic_streambuf<char, std::char_traits<char> >*) ▒
93,14% std::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::basic_istringstream(std::string const&, std::_Ios_Openmode) ▒
+ 6,86% abstract_type::decompose(boost::any const&) ▒
+ 14,54% bool std::has_facet<std::num_get<char, std::istreambuf_iterator<char, std::char_traits<char> > > >(std::locale const&) ▒
+ 14,52% std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > > const& std::use_facet<std::num_put<char, std::ostreambuf_iterator<char, std▒
- 9,97% perf_mutation libstdc++.so.6.0.20 [.] __dynamic_cast ▒
- __dynamic_cast ▒
+ 19,67% std::num_get<char, std::istreambuf_iterator<char, std::char_traits<char> > > const& std::use_facet<std::num_get<char, std::istreambuf_iterator<char, std▒
+ 18,66% std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > > const& std::use_facet<std::num_put<char, std::ostreambuf_iterator<char, std▒
+ 16,72% bool std::has_facet<std::num_get<char, std::istreambuf_iterator<char, std::char_traits<char> > > >(std::locale const&) ▒
+ 15,16% bool std::has_facet<std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > > >(std::locale const&) ▒
+ 15,04% bool std::has_facet<std::ctype<char> >(std::locale const&) ▒
+ 14,74% std::ctype<char> const& std::use_facet<std::ctype<char> >(std::locale const&) ▒
- 7,98% perf_mutation libstdc++.so.6.0.20 [.] __cxxabiv1::__vmi_class_type_info::__do_dyncast(long, __cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1▒
- __cxxabiv1::__vmi_class_type_info::__do_dyncast(long, __cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1::__class_type_info const*, void const*, __cxxabiv1::__▒
- __dynamic_cast ▒
- 77,13% std::ctype<char> const& std::use_facet<std::ctype<char> >(std::locale const&) ▒
std::basic_ios<char, std::char_traits<char> >::_M_cache_locale(std::locale const&) ▒
+ std::basic_ios<char, std::char_traits<char> >::init(std::basic_streambuf<char, std::char_traits<char> >*) ▒
+ 22,87% bool std::has_facet<std::ctype<char> >(std::locale const&) ▒
+ 6,45% perf_mutation libstdc++.so.6.0.20 [.] std::locale::locale() ▒
+ 6,40% perf_mutation libstdc++.so.6.0.20 [.] std::locale::~locale() ▒
+ 5,02% perf_mutation libstdc++.so.6.0.20 [.] std::locale::operator=(std::locale const&) ▒
+ 4,18% perf_mutation libc-2.19.so [.] __GI___strcmp_ssse3 ▒
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