Re: Feature Request --- was: PostgreSQL Performance Tuning

От: david@lang.hm
Тема: Re: Feature Request --- was: PostgreSQL Performance Tuning
Дата: ,
Msg-id: Pine.LNX.4.64.0705031314310.26172@asgard.lang.hm
(см: обсуждение, исходный текст)
Ответ на: Re: Feature Request --- was: PostgreSQL Performance Tuning  (Josh Berkus)
Ответы: Re: Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno)
Список: pgsql-performance

Скрыть дерево обсуждения

Re: [GENERAL] PostgreSQL Performance Tuning  (Steve Crawford, )
 Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno, )
  Re: Feature Request --- was: PostgreSQL Performance Tuning  (Tom Lane, )
   Re: Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno, )
    Re: Feature Request --- was: PostgreSQL Performance Tuning  (Michael Stone, )
     Re: Feature Request --- was: PostgreSQL Performance Tuning  (Mark Lewis, )
      Re: Feature Request --- was: PostgreSQL Performance Tuning  (Michael Stone, )
     Re: Feature Request --- was: PostgreSQL Performance Tuning  (Jim Nasby, )
     Re: Feature Request --- was: PostgreSQL Performance Tuning  (Dan Harris, )
      Re: Feature Request --- was: PostgreSQL Performance Tuning  (Josh Berkus, )
       Re: Feature Request --- was: PostgreSQL Performance Tuning  (Greg Smith, )
        Re: Feature Request --- was: PostgreSQL Performance Tuning  ("Craig A. James", )
         Re: Feature Request --- was: PostgreSQL Performance Tuning  (Kevin Hunter, )
          Re: Feature Request --- was: PostgreSQL Performance Tuning  (Greg Smith, )
        Re: Feature Request --- was: PostgreSQL Performance Tuning  (Josh Berkus, )
         Re: Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno, )
          Re: Feature Request --- was: PostgreSQL Performance Tuning  (, )
           Re: Feature Request --- was: PostgreSQL Performance Tuning  (Sebastian Hennebrueder, )
            Re: Feature Request --- was: PostgreSQL Performance Tuning  (Josh Berkus, )
             Re: Feature Request --- was: PostgreSQL Performance Tuning  (Sebastian Hennebrueder, )
             Re: Feature Request --- was: PostgreSQL Performance Tuning  (Mark Kirkwood, )
              Re: Feature Request --- was: PostgreSQL Performance Tuning  (Sebastian Hennebrueder, )
             Re: Feature Request --- was: PostgreSQL Performance Tuning  (Jim Nasby, )
              Re: Feature Request --- was: PostgreSQL Performance Tuning  (Andreas Kostyrka, )
         Re: Feature Request --- was: PostgreSQL Performance Tuning  (Greg Smith, )
          Re: Feature Request --- was: PostgreSQL Performance Tuning  (, )
          Re: Feature Request --- was: PostgreSQL Performance Tuning  (Josh Berkus, )
           Re: Feature Request --- was: PostgreSQL Performance Tuning  (, )
            Re: Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno, )
             Re: Feature Request --- was: PostgreSQL Performance Tuning  (, )
              Re: Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno, )
               Re: Feature Request --- was: PostgreSQL Performance Tuning  (, )
                Re: Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno, )
                 Re: Feature Request --- was: PostgreSQL Performance Tuning  (, )
                  Re: Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno, )
                   Re: Feature Request --- was: PostgreSQL Performance Tuning  (, )
           Re: Feature Request --- was: PostgreSQL Performance Tuning  (Greg Smith, )
            Re: Feature Request --- was: PostgreSQL Performance Tuning  (Michael Stone, )
             Re: Feature Request --- was: PostgreSQL Performance Tuning  (Greg Smith, )
              Re: Feature Request --- was: PostgreSQL Performance Tuning  ("Steinar H. Gunderson", )
       Re: Feature Request --- was: PostgreSQL Performance Tuning  (Ron, )
      Re: Feature Request --- was: PostgreSQL Performance Tuning  (Bill Moran, )
       Re: Feature Request --- was: PostgreSQL Performance Tuning  (Josh Berkus, )
       Re: Feature Request --- was: PostgreSQL Performance Tuning  (Dan Harris, )
        Re: Feature Request --- was: PostgreSQL Performance Tuning  (Josh Berkus, )
         Re: Feature Request --- was: PostgreSQL Performance Tuning  (, )
    Re: Feature Request --- was: PostgreSQL Performance Tuning  (Tom Lane, )
     Re: Feature Request --- was: PostgreSQL Performance Tuning  ("H.J. Sanders", )
     Re: Feature Request --- was: PostgreSQL Performance Tuning  (Kevin Hunter, )
      Re: Feature Request --- was: PostgreSQL Performance Tuning  (Ray Stell, )
    Re: Feature Request --- was: PostgreSQL Performance Tuning  ("Harald Armin Massa", )
     Re: Feature Request --- was: PostgreSQL Performance Tuning  ("Jonah H. Harris", )
      Re: Feature Request --- was: PostgreSQL Performance Tuning  ("Harald Armin Massa", )
     Re: Feature Request --- was: PostgreSQL Performance Tuning  (Carlos Moreno, )

On Thu, 3 May 2007, Josh Berkus wrote:

> Greg,
>
>> I'm not fooled--secretly you and your co-workers laugh at how easy this
>> is on Solaris and are perfectly happy with how difficult it is on Linux,
>> right?
>
> Don't I wish.  There's issues with getting CPU info on Solaris, too, if you
> get off of Sun Hardware to generic white boxes.  The base issue is that
> there's no standardization on how manufacturers report the names of their
> CPUs, 32/64bit, or clock speeds.   So any attempt to determine "how fast"
> a CPU is, even on a 1-5 scale, requires matching against a database of
> regexes which would have to be kept updated.
>
> And let's not even get started on Windows.

I think the only sane way to try and find the cpu speed is to just do a
busy loop of some sort (ideally something that somewhat resembles the main
code) and see how long it takes. you may have to do this a few times until
you get a loop that takes long enough (a few seconds) on a fast processor

David Lang


В списке pgsql-performance по дате сообщения:

От: david@lang.hm
Дата:
Сообщение: Re: Feature Request --- was: PostgreSQL Performance Tuning
От: "Merlin Moncure"
Дата:
Сообщение: Re: Query performance problems with partitioned tables