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Re: TRUNCATE TABLE

От: Adriaan van Os
Тема: Re: TRUNCATE TABLE
Дата: ,
Msg-id: 4697D339.2090204@microbizz.nl
(см: обсуждение, исходный текст)
Ответ на: Re: TRUNCATE TABLE  (Tom Lane)
Список: pgsql-performance

Скрыть дерево обсуждения

TRUNCATE TABLE  (Adriaan van Os, )
 Re: TRUNCATE TABLE  (Tom Lane, )
  Re: TRUNCATE TABLE  (Adriaan van Os, )
   Re: TRUNCATE TABLE  (Tom Lane, )
 Re: TRUNCATE TABLE  (Gregory Stark, )
  Re: TRUNCATE TABLE  (Adriaan van Os, )
   Re: TRUNCATE TABLE  (Gregory Stark, )
   Re: TRUNCATE TABLE  (Jean-Max Reymond, )
    Re: TRUNCATE TABLE  ("Thomas Samson", )
   Re: TRUNCATE TABLE  (Michael Stone, )
    Re: TRUNCATE TABLE  (Tom Lane, )
     Re: TRUNCATE TABLE  (Adriaan van Os, )
      Re: TRUNCATE TABLE  ("Steinar H. Gunderson", )
      Re: TRUNCATE TABLE  (Tom Lane, )
       Re: TRUNCATE TABLE  ("Jim C. Nasby", )
       Re: TRUNCATE TABLE  (Alvaro Herrera, )
        Re: TRUNCATE TABLE  ("Pavel Stehule", )
         Re: TRUNCATE TABLE  ("Jim C. Nasby", )
          Re: TRUNCATE TABLE  (Tom Lane, )
           Re: TRUNCATE TABLE  (Adriaan van Os, )
           Re: TRUNCATE TABLE  (Adriaan van Os, )
            Re: TRUNCATE TABLE  (Alvaro Herrera, )
           Re: TRUNCATE TABLE  ("Kevin Grittner", )
            Re: TRUNCATE TABLE  (Adriaan van Os, )
             Re: TRUNCATE TABLE  (Decibel!, )
              Re: TRUNCATE TABLE  (Tom Lane, )
       Re: TRUNCATE TABLE  (Adriaan van Os, ) 
Tom Lane wrote:
> Adriaan van Os <> writes:
>> I started another test. I copied an existing database (not very large,
>> 35 tables, typically a few hundred up to a few thousand records) with
>> CREATE DATABASE testdb TEMPLATE mydb and started to remove random
>> tables from testdb with DROP TABLE and TRUNCATE TABLE. I did this with
>> the query tool of pgAdmin III, to exclude any doubts about my own
>> software (that uses pqlib).
>
> Can you try it with plain psql?  pgAdmin is a variable that wasn't
> accounted for in my tests.

Will do that and report the results.

>> The hardware is an Intel dual-core 17-inch
>> MacBook Pro running Mac OS X 10.4.
>
> Hmm.  I thought you said Fedora before.

Yes, the test that I mentioned yesterday was on Fedora, but as you were "of the opinion that
there's something broken about
Adriaan's infrastructure" I tried the new test on a completely different system today.

   However, I'd done a few tests
> yesterday on my own Mac laptop (Al G4) and not gotten results that were
> out of line with HPUX or Fedora.
>
> Does anyone else want to try replicating these tests?

Thanks,

Adriaan van Os

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