Re: Flushing large data immediately in pqcomm
От | Andres Freund |
---|---|
Тема | Re: Flushing large data immediately in pqcomm |
Дата | |
Msg-id | 20240407013917.r5o7qd7flgnepo2n@awork3.anarazel.de обсуждение исходный текст |
Ответ на | Re: Flushing large data immediately in pqcomm (Jelte Fennema-Nio <postgres@jeltef.nl>) |
Ответы |
Re: Flushing large data immediately in pqcomm
Re: Flushing large data immediately in pqcomm |
Список | pgsql-hackers |
Hi, On 2024-04-07 00:45:31 +0200, Jelte Fennema-Nio wrote: > On Sat, 6 Apr 2024 at 22:21, Andres Freund <andres@anarazel.de> wrote: > > The small regression for small results is still kinda visible, I haven't yet > > tested the patch downthread. > > Thanks a lot for the faster test script, I'm also impatient. I still > saw the small regression with David his patch. Here's a v6 where I > think it is now gone. I added inline to internal_put_bytes too. I > think that helped especially because for two calls to > internal_put_bytes len is a constant (1 and 4) that is smaller than > PqSendBufferSize. So for those calls the compiler can now statically > eliminate the new codepath because "len >= PqSendBufferSize" is known > to be false at compile time. Nice. > Also I incorporated all of Ranier his comments. Changing the global vars to size_t seems mildly bogus to me. All it's achieving is to use slightly more memory. It also just seems unrelated to the change. Greetings, Andres Freund
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