Data comes from Sandy Bridge system running sysbench OLTP RO in 1 thread against 1 table.
Call graphs:
- 0.12% mysqld mysqld
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- Field_long::type() const
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+ 25.78% ha_innobase::position(unsigned char const*)
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+ 17.51% ha_innobase::build_template(bool)
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+ 14.59% Item_field::fix_fields(THD*, Item**)
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+ 13.16% update_ref_and_keys(THD*, st_dynamic_array*, st_join_table*, unsigned int, Item*, unsigned long long, st_select_lex*, st_sargable_param**) [clone .isra.253]
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+ 8.45% Item_func::setup_args_and_comparator(THD*, Arg_comparator*)
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+ 6.81% get_mm_parts(RANGE_OPT_PARAM*, Item*, Field*, Item_func::Functype, Item*, Item_result) [clone .isra.162] [clone .part.163]
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+ 3.65% get_mm_tree(RANGE_OPT_PARAM*, Item**)
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+ 2.70% ha_innobase::store_key_val_for_row(unsigned int, char*, unsigned int, unsigned char const*)
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+ 2.25% Item_func_between::fix_length_and_dec()
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+ 2.00% Item::cmp_type() const
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+ 0.83% Field::eq(Field*)
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+ 0.62% Item_func::convert_const_compared_to_int_field(THD*)
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This is virtual method which can't be inlined. Most time spent for function call convention. Check if we can revoke it's virtual status.
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Bug
Minor