Re: Performance under contention

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От Kevin Grittner
Тема Re: Performance under contention
Дата
Msg-id 4CEA58430200002500037D06@gw.wicourts.gov
обсуждение исходный текст
Ответ на Performance under contention  (Ivan Voras)
Ответы Re: Performance under contention  (Ivan Voras)
Список pgsql-performance
Дерево обсуждения
Performance under contention  (Ivan Voras, )
 Re: Performance under contention  ("Kevin Grittner", )
  Re: Performance under contention  (Ivan Voras, )
   Re: Performance under contention  (Jignesh Shah, )
    Re: Performance under contention  (Omar Kilani, )
   Re: Performance under contention  ("Kevin Grittner", )
    Re: Performance under contention  (Ivan Voras, )
     Re: Performance under contention  (Craig Ringer, )
      Re: Performance under contention  (Ivan Voras, )
      Re: Performance under contention  (Vitalii Tymchyshyn, )
       Re: Performance under contention  ("Kevin Grittner", )
 Re: Performance under contention  ("Kevin Grittner", )
  Re: Performance under contention  (Ivan Voras, )
 Re: Performance under contention  (Greg Smith, )
  Re: Performance under contention  (Ivan Voras, )
 Re: Performance under contention  (Robert Haas, )
  Re: Performance under contention  (Robert Haas, )
  Re: Performance under contention  (Jignesh Shah, )
   Re: Performance under contention  (Jignesh Shah, )
   Re: Performance under contention  (Robert Haas, )
    Re: Performance under contention  (Tom Lane, )
     Re: Performance under contention  (Dave Crooke, )
     Re: Performance under contention  (Robert Haas, )
    Re: Performance under contention  (Ivan Voras, )
     Re: Performance under contention  (Robert Haas, )
      Re: Performance under contention  (Ivan Voras, )
      Re: Performance under contention  (Віталій Тимчишин, )
       Re: Performance under contention  (Ivan Voras, )
       Re: Performance under contention  (Robert Haas, )
        Re: Performance under contention  (Robert Haas, )
         Re: Performance under contention  (Tom Lane, )
          Re: Performance under contention  (Robert Haas, )
           Re: Performance under contention  (Tom Lane, )
            Re: Performance under contention  (Robert Haas, )
Ivan Voras <> wrote:

> It looks like a hack

Not to everyone.  In the referenced section, Hellerstein,
Stonebraker and Hamilton say:

"any good multi-user system has an admission control policy"

In the case of PostgreSQL I understand the counter-argument,
although I'm inclined to think that it's prudent for a product to
limit resource usage to a level at which it can still function well,
even if there's an external solution which can also work, should
people use it correctly.  It seems likely that a mature admission
control policy could do a better job of managing some resources than
an external product could.

-Kevin

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