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SerializationString improve performance

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This commit is contained in:
Maksim Kita 2023-12-10 16:05:29 +03:00
parent efb82a93c5
commit 81250d1a90
1 changed files with 6 additions and 1 deletions
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7
src/DataTypes/Serializations/SerializationString.cpp
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@ -152,6 +152,8 @@ template <int UNROLL_TIMES>
static NO_INLINE void deserializeBinarySSE2(ColumnString::Chars & data, ColumnString::Offsets & offsets, ReadBuffer & istr, size_t limit)
{
size_t offset = data.size();
data.resize(std::max(data.capacity(), static_cast<size_t>(4096)));
for (size_t i = 0; i < limit; ++i)
{
if (istr.eof())
@ -171,7 +173,8 @@ static NO_INLINE void deserializeBinarySSE2(ColumnString::Chars & data, ColumnSt
offset += size + 1;
offsets.push_back(offset);
data.resize(offset);
if (unlikely(offset > data.size()))
data.resize(data.size() * 2);
if (size)
{
@ -203,6 +206,8 @@ static NO_INLINE void deserializeBinarySSE2(ColumnString::Chars & data, ColumnSt
data[offset - 1] = 0;
}
data.resize(offset);
}