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perf(col_str): reduce max memory usage #437

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perf(col_str): reduce max memory usage #437

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zdyj3170101136
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Summary

here is memory inuse bytes pprof.

the ColStr WriteColumn copy the buf.

截屏2024-10-22 上午10 15 32

reduce max memory usage bytes by use writev.

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@ernado cc

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@ernado could you merge it ?

@zdyj3170101136 zdyj3170101136 requested a review from ernado October 24, 2024 02:32
jdef
jdef reviewed Nov 14, 2024
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@zdyj3170101136 zdyj3170101136 requested a review from jdef November 15, 2024 02:42
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@ernado ernado Awaiting requested review from ernado

@jdef jdef Awaiting requested review from jdef

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@zdyj3170101136 @ernado @jdef