Re: Scalability in postgres

От: Kevin Grittner
Тема: Re: Scalability in postgres
Дата: ,
Msg-id: 4A28E8950200002500027601@gw.wicourts.gov
(см: обсуждение, исходный текст)
Ответ на: Re: Scalability in postgres  (Scott Carey)
Список: pgsql-performance

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Scalability in postgres  (Fabrix, )
 Re: Scalability in postgres  (David Rees, )
  Re: Scalability in postgres  (Fabrix, )
   Re: Scalability in postgres  (Scott Mead, )
    Re: Scalability in postgres  (Fabrix, )
   Re: Scalability in postgres  (Scott Marlowe, )
 Re: Scalability in postgres  (Scott Marlowe, )
  Re: Scalability in postgres  (Fabrix, )
  Re: Scalability in postgres  (Flavio Henrique Araque Gurgel, )
   Re: Scalability in postgres  (Fabrix, )
    Re: Scalability in postgres  (Scott Marlowe, )
    Re: Scalability in postgres  (Flavio Henrique Araque Gurgel, )
     Re: Scalability in postgres  (Greg Smith, )
      Re: Scalability in postgres  (Grzegorz Jaśkiewicz, )
       Re: Scalability in postgres  (Scott Marlowe, )
       Re: Scalability in postgres  (Scott Marlowe, )
        Re: Scalability in postgres  (Grzegorz Jaśkiewicz, )
         Re: Scalability in postgres  (Scott Marlowe, )
          Re: Scalability in postgres  (Grzegorz Jaśkiewicz, )
           Re: Scalability in postgres  (Scott Marlowe, )
            Re: Scalability in postgres  (Grzegorz Jaśkiewicz, )
             Re: Scalability in postgres  (Scott Marlowe, )
         Re: Scalability in postgres  (Ron Mayer, )
       Re: Scalability in postgres  (Greg Smith, )
        Re: Scalability in postgres  (Scott Mead, )
         Re: Scalability in postgres  (Scott Marlowe, )
         Re: Scalability in postgres  (Fabrix, )
          Re: Scalability in postgres  (Scott Mead, )
      Re: Scalability in postgres  (Fabrix, )
       Re: Scalability in postgres  (Greg Smith, )
      Re: Scalability in postgres  (Scott Carey, )
       Re: Scalability in postgres  (Greg Smith, )
        Re: Scalability in postgres  (Scott Marlowe, )
         Re: Scalability in postgres  (Greg Smith, )
       Re: Scalability in postgres  (Fabrix, )
        Re: Scalability in postgres  (Scott Carey, )
      Re: Scalability in postgres  (James Mansion, )
       Re: Scalability in postgres  ("Kevin Grittner", )
        Re: Scalability in postgres  (Dimitri, )
         Re: Scalability in postgres  ("Kevin Grittner", )
          Re: Scalability in postgres  (Scott Carey, )
           Re: Scalability in postgres  (Robert Haas, )
            Re: Scalability in postgres  (Scott Carey, )
             Re: Scalability in postgres  (Robert Haas, )
              Re: Scalability in postgres  (Scott Carey, )
               Re: Scalability in postgres  (Robert Haas, )
              Re: Scalability in postgres  (, )
               Re: Scalability in postgres  (Robert Haas, )
                Re: Scalability in postgres  (Greg Smith, )
                 Re: Scalability in postgres  (, )
                  Re: Scalability in postgres  (Robert Haas, )
                 Re: Scalability in postgres  (Mark Mielke, )
                  Re: Scalability in postgres  (Greg Smith, )
                   Re: Scalability in postgres  (Robert Haas, )
                 Re: Scalability in postgres  (Craig James, )
          Re: Scalability in postgres  (Dimitri, )
           Re: Scalability in postgres  (Marc Cousin, )
        Re: Scalability in postgres  (James Mansion, )
         Re: Scalability in postgres  ("Kevin Grittner", )
          Re: Scalability in postgres  (Mark Mielke, )
           Re: Scalability in postgres  (, )
            Re: Scalability in postgres  (Mark Mielke, )
             Re: Scalability in postgres  (, )
           Re: Scalability in postgres  ("Kevin Grittner", )
           Re: Scalability in postgres  (Greg Smith, )
          Re: Scalability in postgres  (Scott Carey, )
           Re: Scalability in postgres  ("Kevin Grittner", )
         Re: Scalability in postgres  ("Kevin Grittner", )
 Re: Scalability in postgres  (Jeff Janes, )
  Re: Scalability in postgres  (Tom Lane, )
   Re: Scalability in postgres  (Jeff Janes, )
  Re: Scalability in postgres  ("", )

Scott Carey <> wrote:

> If you wake up 10,000 threads, and they all can get significant work
> done before yielding no matter what order they run, the system will
> scale extremely well.

But with roughly twice the average response time you would get
throttling active requests to the minimum needed to keep all resources
busy.  (Admittedly a hard point to find with precision.)

> I would think that the 4 or 5 most important locks or concurrency
> coordination points in Postgres have very specific, unique
> properties.

Given the wide variety of uses I'd be cautious about such assumptions.

> In particular, these are interesting references, (not only for
java):

With this wealth of opinion, perhaps they can soon approach IBM's JVM
in their ability to support a large number of threads.  I'm rooting
for them.

-Kevin


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