Re: performance for high-volume log insertion

От: Thomas
Тема: Re: performance for high-volume log insertion
Дата: ,
Msg-id: 49F499B7.9060102@gmx.net
(см: обсуждение, исходный текст)
Ответ на: Re: performance for high-volume log insertion  (Kris Jurka)
Список: pgsql-performance

Скрыть дерево обсуждения

performance for high-volume log insertion  (, )
 Re: performance for high-volume log insertion  (Stephen Frost, )
  Re: performance for high-volume log insertion  (, )
   Re: performance for high-volume log insertion  (Stephen Frost, )
    Re: performance for high-volume log insertion  (, )
     Re: performance for high-volume log insertion  (Stephen Frost, )
      Re: performance for high-volume log insertion  (, )
       Re: performance for high-volume log insertion  (Stephen Frost, )
        Re: performance for high-volume log insertion  (, )
       Re: performance for high-volume log insertion  (Ben Chobot, )
        Re: performance for high-volume log insertion  (Stephen Frost, )
         Re: performance for high-volume log insertion  (, )
          Re: performance for high-volume log insertion  (Stephen Frost, )
           Re: performance for high-volume log insertion  (, )
            Re: performance for high-volume log insertion  (, )
             Re: performance for high-volume log insertion  (Stephen Frost, )
            Re: performance for high-volume log insertion  (Stephen Frost, )
   Re: performance for high-volume log insertion  (Greg Smith, )
    Re: performance for high-volume log insertion  (Stephen Frost, )
     Re: performance for high-volume log insertion  (, )
      Re: performance for high-volume log insertion  (Stephen Frost, )
    Re: performance for high-volume log insertion  (, )
     Re: performance for high-volume log insertion  (Stephen Frost, )
      Re: performance for high-volume log insertion  (, )
       Re: performance for high-volume log insertion  (Richard Huxton, )
        Re: performance for high-volume log insertion  (Kenneth Marshall, )
         Re: performance for high-volume log insertion  (, )
          Re: performance for high-volume log insertion  (Kenneth Marshall, )
     Re: performance for high-volume log insertion  (Greg Smith, )
      Re: performance for high-volume log insertion  (, )
       Re: performance for high-volume log insertion  (Kenneth Marshall, )
       Re: performance for high-volume log insertion  (Greg Smith, )
   Re: performance for high-volume log insertion  (James Mansion, )
    Re: performance for high-volume log insertion  (Stephen Frost, )
     Re: performance for high-volume log insertion  (, )
      Re: performance for high-volume log insertion  (Robert Haas, )
      Re: performance for high-volume log insertion  (Stephen Frost, )
       Re: performance for high-volume log insertion  (Glenn Maynard, )
        Re: performance for high-volume log insertion  (, )
         Re: performance for high-volume log insertion  (Glenn Maynard, )
        Re: performance for high-volume log insertion  (Stephen Frost, )
         Re: performance for high-volume log insertion  (Tom Lane, )
         Re: performance for high-volume log insertion  (Glenn Maynard, )
          Re: performance for high-volume log insertion  (Stephen Frost, )
           Re: performance for high-volume log insertion  (Glenn Maynard, )
            Re: performance for high-volume log insertion  (Stephen Frost, )
             Re: performance for high-volume log insertion  (Glenn Maynard, )
              Re: performance for high-volume log insertion  (Stephen Frost, )
             Re: performance for high-volume log insertion  (, )
              Re: performance for high-volume log insertion  (Stephen Frost, )
           Re: performance for high-volume log insertion  (Thomas Kellerer, )
            Re: performance for high-volume log insertion  (Kris Jurka, )
             Re: performance for high-volume log insertion  (Thomas, )
             Re: performance for high-volume log insertion  (Scott Marlowe, )
              Re: performance for high-volume log insertion  (Kris Jurka, )
               Re: performance for high-volume log insertion  (Scott Marlowe, )
               Re: performance for high-volume log insertion  (, )
     Re: performance for high-volume log insertion  (James Mansion, )
      Re: performance for high-volume log insertion  (Stephen Frost, )
       Re: performance for high-volume log insertion  (James Mansion, )
        Re: performance for high-volume log insertion  ("Joshua D. Drake", )
        Re: performance for high-volume log insertion  (Glenn Maynard, )
         Re: performance for high-volume log insertion  (, )
          Re: performance for high-volume log insertion  (Stephen Frost, )
         Re: performance for high-volume log insertion  (PFC, )
          Re: performance for high-volume log insertion  (, )
          Re: performance for high-volume log insertion  (Glenn Maynard, )
 Re: performance for high-volume log insertion  (Simon Riggs, )

Kris Jurka wrote on 26.04.2009 19:07:
> Despite the size of the batch passed to the JDBC driver, the driver
> breaks it up into internal sub-batch sizes of 256 to send to the
> server.  It does this to avoid network deadlocks from sending too much
> data to the server without reading any in return.  If the driver was
> written differently it could handle this better and send the full batch
> size, but at the moment that's not possible and we're hoping the gains
> beyond this size aren't too large.

Ah, thanks for the info.
I have seen this behaviour with other DBMS as well.

Going beyond ~200-500 doesn't improve the performance on Oracle or SQL Server as
well.

So I guess PG wouldn't really benefit that much from a different implementation
in the driver :)

Thomas





В списке pgsql-performance по дате сообщения:

От: Thomas
Дата:
Сообщение: Re: performance for high-volume log insertion
От: Mark Wong
Дата:
Сообщение: Re: Using IOZone to simulate DB access patterns