thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-12-14 18:32:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

another optimization: adjuest type of inserts according to the size of instructions, which makes more parallalism

Browse Source
This commit is contained in:
taiyang-li 2023-01-17 11:27:28 +08:00
parent 87f869a129
commit 3b4ac825ba
1 changed files with 43 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
src/Functions/multiIf.cpp
View File

@ -19,6 +19,7 @@ namespace ErrorCodes
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
extern const int NOT_IMPLEMENTED;
extern const int LOGICAL_ERROR;
}
namespace
@ -240,33 +241,49 @@ public:
return std::move(res);
}
#define EXECUTE_INSTRUCTIONS_COLUMNAR(TYPE) \
#define EXECUTE_INSTRUCTIONS_COLUMNAR(TYPE, INDEX) \
if (which.is##TYPE()) \
{ \
MutableColumnPtr res = ColumnVector<TYPE>::create(rows); \
executeInstructionsColumnar<TYPE>(instructions, rows, res); \
executeInstructionsColumnar<TYPE, INDEX>(instructions, rows, res); \
return std::move(res); \
}
#define ENUMERATE_NUMERIC_TYPES(M) \
M(UInt8) \
M(UInt16) \
M(UInt32) \
M(UInt64) \
M(Int8) \
M(Int16) \
M(Int32) \
M(Int64) \
M(UInt128) \
M(UInt256) \
M(Int128) \
M(Int256) \
M(Float32) \
M(Float64)
#define ENUMERATE_NUMERIC_TYPES(M, INDEX) \
M(UInt8, INDEX) \
M(UInt16, INDEX) \
M(UInt32, INDEX) \
M(UInt64, INDEX) \
M(Int8, INDEX) \
M(Int16, INDEX) \
M(Int32, INDEX) \
M(Int64, INDEX) \
M(UInt128, INDEX) \
M(UInt256, INDEX) \
M(Int128, INDEX) \
M(Int256, INDEX) \
M(Float32, INDEX) \
M(Float64, INDEX) \
throw Exception( \
ErrorCodes::NOT_IMPLEMENTED, "Columnar execution of function {} not implemented for type {}", getName(), result_type->getName());
ENUMERATE_NUMERIC_TYPES(EXECUTE_INSTRUCTIONS_COLUMNAR)
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Columnar multiIf not implemented for type {}", result_type->getName());
}
size_t num_instructions = instructions.size();
if (num_instructions <= std::numeric_limits<Int16>::max())
{
ENUMERATE_NUMERIC_TYPES(EXECUTE_INSTRUCTIONS_COLUMNAR, Int16)
}
else if (num_instructions <= std::numeric_limits<Int32>::max())
{
ENUMERATE_NUMERIC_TYPES(EXECUTE_INSTRUCTIONS_COLUMNAR, Int32)
}
else if (num_instructions <= std::numeric_limits<Int64>::max())
{
ENUMERATE_NUMERIC_TYPES(EXECUTE_INSTRUCTIONS_COLUMNAR, Int64)
}
else
throw Exception(
ErrorCodes::LOGICAL_ERROR, "Instruction size({}) of function {} is out of range", getName(), result_type->getName());
}
private:
static void executeInstructions(std::vector<Instruction> & instructions, size_t rows, const MutableColumnPtr & res)
@ -306,9 +323,10 @@ private:
}
/// We should read source from which instruction on each row?
static void calculateInserts(std::vector<Instruction> & instructions, size_t rows, PaddedPODArray<Int64> & inserts)
template <typename S>
static NO_INLINE void calculateInserts(std::vector<Instruction> & instructions, size_t rows, PaddedPODArray<S> & inserts)
{
for (Int64 i = instructions.size() - 1; i >= 0; --i)
for (S i = static_cast<S>(instructions.size() - 1); i >= 0; --i)
{
auto & instruction = instructions[i];
if (instruction.condition_always_true)
@ -349,10 +367,10 @@ private:
}
}
template <typename T>
static void executeInstructionsColumnar(std::vector<Instruction> & instructions, size_t rows, const MutableColumnPtr & res)
template <typename T, typename S>
static NO_INLINE void executeInstructionsColumnar(std::vector<Instruction> & instructions, size_t rows, const MutableColumnPtr & res)
{
PaddedPODArray<Int64> inserts(rows, -1);
PaddedPODArray<S> inserts(rows, static_cast<S>(instructions.size()));
calculateInserts(instructions, rows, inserts);
PaddedPODArray<T> & res_data = assert_cast<ColumnVector<T> &>(*res).getData();